Engine Mechanical - Hybrid (hp2) 6.0l (lz1) — Cadillac Escalade GMT900 (2006-2014)

Fastener Tightening Specifications

Application	Specification
Application	Metric	English
Accessory Drive Belt Idler Pulley Bolt	50 N.m	37 lb ft
Accessory Drive Belt Tensioner Bolts	50 N.m	37 lb ft
Active Fuel Management Oil Pressure Relief Valve	27 N.m	20 lb ft
Air Conditioning Compressor Bracket Bolts	50 N.m	37 lb ft
Automatic Transmission Flex Plate Bolts - First Pass	20 N.m	15 lb ft
Automatic Transmission Flex Plate Bolts - Second Pass	50 N.m	37 lb ft
Automatic Transmission Flex Plate Bolts - Final Pass	100 N.m	74 lb ft
Automatic Transmission Flex Plate-to-Torque Dampener Bolts	65 N.m	48 lb ft
Camshaft Position (CMP) Actuator Magnet Bolts	12 N.m	106 lb in
Camshaft Position (CMP) Actuator Solenoid Valve - First Pass	65 N.m	48 lb ft
Camshaft Position (CMP) Actuator Solenoid Valve - Final Pass	90 degrees
Camshaft Position (CMP) Sensor Bolt	12 N.m	106 lb in
Camshaft Position (CMP) Sensor Wire Harness Bolt	12 N.m	106 lb ft
Camshaft Retainer Bolts - TORX Head Bolts	15 N.m	11 lb ft
Connecting Rod Bolts - First Pass	20 N.m	15 lb ft
Connecting Rod Bolts - Final Pass	85 degrees
Coolant Air Bleed Pipe and Cover Bolts	12 N.m	106 lb in
Coolant Temperature Sensor	20 N.m	15 lb ft
Crankshaft Balancer Bolt
First Pass	150 N.m	110 lb ft
Second Pass	Loosen 360 degrees
Third Pass	80 N.m	59 lb ft
Final Pass	125 degrees
Crankshaft Bearing Cap M8 Bolts	25 N.m	18 lb ft
Crankshaft Bearing Cap M10 Bolts - First Pass in Sequence	20 N.m	15 lb ft
Crankshaft Bearing Cap M10 Bolts - Final Pass in Sequence	80 degrees
Crankshaft Bearing Cap M10 Studs - First Pass in Sequence	20 N.m	15 lb ft
Crankshaft Bearing Cap M10 Studs - Final Pass in Sequence	51 degrees
Crankshaft Oil Deflector Nuts	25 N.m	18 lb ft
Crankshaft Position (CKP) Sensor Bolt	25 N.m	18 lb ft
Crankshaft Rear Oil Seal Housing Bolts	30 N.m	22 lb ft
Cylinder Head M8 Bolts - in Sequence	30 N.m	22 lb ft
Cylinder Head M11 Bolts - First Pass in Sequence	30 N.m	22 lb ft
Cylinder Head M11 Bolts - Second Pass in Sequence	90 degrees
Cylinder Head M11 Bolts - Final Pass in Sequence	70 degrees
Cylinder Head Plug	20 N.m	15 lb ft
Engine Block Coolant Drain Hole Plug	60 N.m	44 lb ft
Engine Block Coolant Heater	50 N.m	37 lb ft
Engine Block Oil Gallery Plugs	60 N.m	44 lb ft
Engine Harness Ground Stud	25 N.m	18 lb ft
Engine Mount Bracket Bolts	65 N.m	48 lb ft
Engine Mount-to-Engine Bolts	50 N.m	37 lb ft
Engine Mount-to-Frame Bolts	65 N.m	48 lb ft
Evaporative (EVAP) Emission Pipe Bracket Nut	20 N.m	15 lb ft
Exhaust Manifold Bolts - First Pass	15 N.m	11 lb ft
Exhaust Manifold Bolts - Final Pass	20 N.m	15 lb ft
Exhaust Manifold Heat Shield Bolts	9 N.m	80 lb in
Exhaust Manifold Studs	20 N.m	15 lb ft
Front Cover Bolts	25 N.m	18 lb ft
Fuel Injection Fuel Rail Bolts	10 N.m	89 lb in
Fuel Injection Fuel Rail Crossover Tube Bolts	3.8 N.m	34 lb in
Fuel Rail Stop Bracket Bolt	50 N.m	37 lb ft
Ignition Coil Bracket-to-Valve Rocker Arm Cover Studs	12 N.m	106 lb in
Ignition Coil-to-Bracket Bolts	10 N.m	89 lb in
Intake Manifold Bolts - First Pass in Sequence	5 N.m	44 lb in
Intake Manifold Bolts - Final Pass in Sequence	10 N.m	89 lb in
Intake Manifold Sight Shield Retainer Bolts	5 N.m	44 lb in
J 41798 M8 Bolt	25 N.m	18 lb ft
J 41798 M10 Bolts	50 N.m	37 lb ft
Knock Sensor Bolts	25 N.m	18 lb ft
Oil Filter	30 N.m	22 lb ft
Oil Filter Fitting	55 N.m	40 lb ft
Oil Level Indicator Switch	13 N.m	115 lb in
Oil Level Indicator Tube Bolt	25 N.m	18 lb ft
Oil Pan Baffle Bolts	9 N.m	80 lb in
Oil Pan Closeout Cover Bolt - Left Side	9 N.m	80 lb in
Oil Pan Closeout Cover Bolt - Right Side	9 N.m	80 lb in
Oil Pan Cover Bolts	9 N.m	80 lb in
Oil Pan Drain Plug	25 N.m	18 lb ft
Oil Pan M6 Bolts - Oil Pan-to-Rear Housing	12 N.m	106 lb in
Oil Pan M8 Bolts - Oil Pan-to-Engine Block and Oil Pan-to-Front Cover	25 N.m	18 lb ft
Oil Pressure Sensor	35 N.m	26 lb ft
Oil Pump Cover Bolts	12 N.m	106 lb in
Oil Pump Screen Nuts	25 N.m	18 lb ft
Oil Pump Screen-to-Oil Pump Bolts	12 N.m	106 lb in
Oil Pump-to-Engine Block Bolts	25 N.m	18 lb ft
Spark Plugs	15 N.m	11 lb ft
Throttle Body Bolts	10 N.m	89 lb in
Throttle Body Nuts	10 N.m	89 lb in
Throttle Body Studs	6 N.m	53 lb in
Timing Chain Tensioner Bolts	25 N.m	18 lb ft
Transmission Cover Bolts	12 N.m	106 lb in
Transmission Housing-to-Engine Bolts	50 N.m	37 lb ft
Valve Lifter Guide Bolts	12 N.m	106 lb in
Valve Lifter Oil Manifold Bolts	25 N.m	18 lb ft
Valve Rocker Arm Bolts	30 N.m	22 lb ft
Valve Rocker Arm Cover Bolts	12 N.m	106 lb in
Water Inlet Housing Bolts	15 N.m	11 lb ft
Water Pump Bolts - First Pass	15 N.m	11 lb ft
Water Pump Bolts - Final Pass	30 N.m	22 lb ft

Engine Mechanical Specifications

Application	Specification
Application	Metric	English
General
Engine Type	V8
Displacement	6.0L	364 CID
RPO	LZ1
VIN	J
Bore	101.618-101.636 mm	4.0007-4.0017 in
Stroke	92.0 mm	3.622 in
Compression Ratio	10.7:1
Firing Order	1-8-7-2-6-5-4-3
Active Fuel Management Cylinders	1-4-6-7
Spark Plug Gap	1.02 mm	0.04 in
Block
Camshaft Bearing Bore 1 and 5 Diameter	59.58-59.63 mm	2.345-2.347 in
Camshaft Bearing Bore 2 and 4 Diameter	59.08-59.13 mm	2.325-2.327 in
Camshaft Bearing Bore 3 Diameter	58.58-58.63 mm	2.306-2.308 in
Crankshaft Main Bearing Bore Diameter	69.871-69.889 mm	2.75-2.751 in
Crankshaft Main Bearing Bore Out-of-Round	0.006 mm	0.0002 in
Cylinder Bore Diameter	101.618-101.636 mm	4.0007-4.0017 in
Cylinder Head Deck Height - Measuring from the Centerline of Crankshaft to the Deck Face	234.57-234.82 mm	9.235-9.245 in
Cylinder Head Deck Surface Flatness - Measured Within a 152.4 mm (6.0 in) Area	0.11 mm	0.004 in
Cylinder Head Deck Surface Flatness - Measuring the Overall Length of the Block Deck	0.22 mm	0.008 in
Valve Lifter Bore Diameter	21.417-21.443 mm	0.843-0.844 in
Camshaft
Camshaft End Play	0.025-0.305 mm	0.001-0.012 in
Camshaft Journal Diameter	54.990-55.015 mm	2.165-2.166 in
Camshaft Bearing Diameter	55.063-55.088 mm	2.1678-2.1688 in
Camshaft Journal-to-Bearing Clearance	0.048-0.098 mm	0.0002-0.0038 in
Camshaft Journal Out-of-Round	0.025 mm	0.001 in
Camshaft Lobe Lift - Exhaust - Non Active Fuel Management Cylinders	7.17 mm	0.282 in
Camshaft Lobe Lift - Exhaust - Active Fuel Management Cylinders	7.3 mm	0.287 in
Camshaft Lobe Lift - Intake - Non Active Fuel Management Cylinders	7.08 mm	0.279 in
Camshaft Lobe Lift - Intake - Active Fuel Management Cylinders	7.2 mm	0.283 in
Camshaft Runout - Measured at the Intermediate Journals	0.05 mm	0.002 in
Connecting Rod
Connecting Rod Bearing Clearance - Production	0.023-0.065 mm	0.0009-0.0025 in
Connecting Rod Bearing Clearance - Service	0.023-0.076 mm	0.0009-0.003 in
Connecting Rod Bore Diameter - Bearing End	56.505-56.525 mm	2.224-2.225 in
Connecting Rod Bore Out-of-Round - Bearing End - Production	0.004-0.008 mm	0.00015-0.0003 in
Connecting Rod Bore Out-of-Round - Bearing End - Service	0.004-0.008 mm	0.00015-0.0003 in
Connecting Rod Side Clearance	0.11-0.51 mm	0.00433-0.02 in
Crankshaft
Connecting Rod Journal Diameter - Production	53.318-53.338 mm	2.0991-2.0999 in
Connecting Rod Journal Diameter - Service	53.308 mm	2.0987 in
Connecting Rod Journal Out-of-Round - Production	0.005 mm	0.0002 in
Connecting Rod Journal Out-of-Round - Service	0.01 mm	0.0004 in
Connecting Rod Journal Taper - Maximum for 1/2 of Journal Length - Production	0.005 mm	0.0002 in
Connecting Rod Journal Taper - Maximum for 1/2 of Journal Length - Service	0.02 mm	0.00078 in
Crankshaft End Play	0.04-0.2 mm	0.0015-0.0078 in
Crankshaft Main Bearing Clearance - Production	0.02-0.052 mm	0.0008-0.0021 in
Crankshaft Main Bearing Clearance - Service	0.02-0.065 mm	0.0008-0.0025 in
Crankshaft Main Journal Diameter - Production	64.992-65.008 mm	2.558-2.559 in
Crankshaft Main Journal Diameter - Service	64.992 mm	2.558 in
Crankshaft Main Journal Out-of-Round - Production	0.003 mm	0.000118 in
Crankshaft Main Journal Out-of-Round - Service	0.008 mm	0.0003 in
Crankshaft Main Journal Taper - Production	0.01 mm	0.0004 in
Crankshaft Main Journal Taper - Service	0.02 mm	0.00078 in
Crankshaft Rear Flange Runout	0.05 mm	0.002 in
Crankshaft Reluctor Ring Runout - Measured 1.0 mm (0.04 in) Below Tooth Diameter	0.7 mm	0.028 in
Crankshaft Thrust Surface - Production	26.14-26.22 mm	1.029-1.0315 in
Crankshaft Thrust Surface - Service	26.22 mm	1.0315 in
Crankshaft Thrust Surface Runout	0.025 mm	0.001 in
Cylinder Head
Cylinder Head Height/Thickness - Measured from the Cylinder Head Deck to the Valve Rocker Arm Cover Seal Surface	120.2 mm	4.732 in
Surface Flatness - Block Deck - Measured Within a 152.4 mm (6.0 in) Area	0.08 mm	0.003 in
Surface Flatness - Block Deck - Measuring the Overall Length of the Cylinder Head	0.1 mm	0.004 in
Surface Flatness - Exhaust Manifold Deck	0.13 mm	0.005 in
Surface Flatness - Intake Manifold Deck	0.08 mm	0.0031 in
Valve Guide Installed Height - Measured from the Spring Seat Surface to the Top of the Guide	17.32 mm	0.682 in
Intake Manifold
Surface Flatness - Measured at Gasket Sealing Surfaces and Measured Within a 200 mm (7.87 in) Area that Includes 2 Runner Port Openings	3 mm	0.118 in
Lubrication System
Oil Capacity - with Filter	5.68 liters	6.0 quarts
Oil Capacity - without Filter	5.20 liters	5.5 quarts
Oil Pressure - Minimum - Hot	250 kPa at 1,000 RPM 290 kPa at 2,000 RPM 310 kPa at 4,000 RPM	36 psig at 1,000 engine RPM 42 psig at 2,000 engine RPM 45 psig at 4,000 engine RPM
Active Fuel Management Relief Valve Oil Pressure - as Measured at Oil Pressure Sensor Location	379-517 kPa Maximum	55-75 psig Maximum
Oil Pan
Front Cover Alignment - at Oil Pan Surface	0.0-0.5 mm	0.0-0.02 in
Crankshaft Rear Oil Seal Housing Alignment - at Oil Pan Surface	0.0-0.5 mm	0.0-0.02 in
Oil Pan Alignment - to Rear of Engine Block at Transmission Bell Housing Mounting Surface	0.0-0.1 mm	0.0-0.004 in
Piston Rings
Piston Ring End Gap - First Compression Ring - Measured in Cylinder Bore - Production	0.20-0.41 mm	0.0079-0.0161 in
Piston Ring End Gap - First Compression Ring - Measured in Cylinder Bore - Service	0.20-0.46 mm	0.0079-0.0181 in
Piston Ring End Gap - Second Compression Ring - Measured in Cylinder Bore - Production	0.37-0.69 mm	0.0146-0.0272 in
Piston Ring End Gap - Second Compression Ring - Measured in Cylinder Bore - Service	0.37-0.75 mm	0.0146-0.0295 in
Piston Ring End Gap - Oil Control Ring - Measured in Cylinder Bore - Production	0.22-0.79 mm	0.0086-0.0311 in
Piston Ring End Gap - Oil Control Ring - Measured in Cylinder Bore - Service	0.22-0.84 mm	0.0086-0.0331 in
Piston Ring-to-Groove Clearance - First Compression Ring - Production	0.04-0.083 mm	0.0016-0.0033 in
Piston Ring-to-Groove Clearance - First Compression Ring - Service	0.04-0.083 mm	0.0016-0.0033 in
Piston Ring-to-Groove Clearance - Second Compression Ring - Production	0.035-0.078 mm	0.0014-0.0031 in
Piston Ring-to-Groove Clearance - Second Compression Ring - Service	0.035-0.078 mm	0.0014-0.0031 in
Piston Ring-to-Groove Clearance - Oil Control Ring - Production	0.013-0.201 mm	0.0005-0.0079 in
Piston Ring-to-Groove Clearance - Oil Control Ring - Service	0.013-0.201 mm	0.0005-0.0079 in
Pistons and Pins
Pin - Piston Pin Clearance- to-Piston Pin Bore - Production	0.002-0.01 mm	0.00008-0.0004 in
Pin - Piston Pin Clearance-to-Piston Pin Bore - Service	0.002-0.015 mm	0.00008-0.0006 in
Pin - Piston Pin Diameter	23.952-23.955 mm	0.9430-0.9431 in
Pin - Piston Pin Fit in Connecting Rod Bore - Production	0.007-0.02 mm	0.00027-0.00078 in
Pin - Piston Pin Fit in Connecting Rod Bore - Service	0.007-0.022 mm	0.00027-0.00086 in
Piston - Piston Diameter - Measured Over Skirt Coating	101.615-101.649 mm	4.0006-4.0019 in
Piston - Piston to Bore Clearance - Production	0.031 to +0.021 mm	0.0012 to +0.0008 in
Piston - Piston to Bore Clearance - Service Limit With Skirt Coating Worn Off	0.071 mm	0.0028 in
Valve System
Valves - Valve Face Angle	45 degrees
Valves - Valve Face Width	1.25 mm	0.05 in
Valves - Valve Lash	Net Lash - No Adjustment
Valve Lift - Exhaust - Non Active Fuel Management	12.19 mm	0.480 in
Valve Lift - Exhaust - Active Fuel Management	12.41 mm	0.489 in
Valve Lift - Intake - Non Active Fuel Management	12.04 mm	0.474 in
Valve Lift - Intake - Active Fuel Management	12.24 mm	0.488 in
Valves - Valve Seat Angle	46 degrees
Valves - Valve Seat Runout	0.05 mm	0.002 in
Valves - Valve Seat Width - Exhaust	1.78 mm	0.07 in
Valves - Valve Seat Width - Intake	1.02 mm	0.04 in
Valves - Valve Stem Diameter - Production	7.955-7.976 mm	0.313-0.314 in
Valves - Valve Stem Diameter - Service	7.95 mm	0.313 in
Valves - Valve Stem-to-Guide Clearance - Production - Exhaust	0.025-0.066 mm	0.001-0.0026 in
Valves - Valve Stem-to-Guide Clearance - Service - Exhaust	0.093 mm	0.0037 in
Valves - Valve Stem-to-Guide Clearance - Production - Intake	0.025-0.066 mm	0.001-0.0026 in
Valves - Valve Stem-to-Guide Clearance - Service - Intake	0.093 mm	0.0037 in
Rocker Arms - Valve Rocker Arm Ratio	1.70:1
Valve Springs - Valve Spring Free Length	52.9 mm	2.08 in
Valve Springs - Valve Spring Installed Height	45.75 mm	1.8 in
Valve Springs - Valve Spring Load - Closed	340 N at 45.75 mm	76 lb at 1.8 in
Valve Springs - Valve Spring Load - Open	980 N at 33.55 mm	220 lb at 1.32 in

Engine Content Specifications

RPO	VIN	Displacement	Camshaft Position (CMP) Actuator Control System	Active Fuel Management Control System	E85 Capable	Block Material
LZ1	J	6.0L	Yes	Yes	No	Aluminum

Adhesives, Fluids, Lubricants, and Sealers

Application	Type of Material	GM Part Number
Application	Type of Material	United States	Canada
Coolant Temperature Sensor Threads	Sealant	12346004	10953480
Cylinder Head Core Hole Plug	Threadlock	12345382	10953489
Cylinder Head Plug	Threadlock	12345382	10953489
Engine Block Coolant Drain Hole Plug Sealing Washer	Sealant	12346004	10953480
Engine Block Front Oil Gallery Plug	Threadlock	12345382	10953489
Engine Block Oil Gallery Plug Sealing Washers	Sealant	12346004	10953480
Engine Oil Pressure Sensor Threads	Sealant	12346004	10953480
Engine Oil Supplement	Fluorescent Dye	12345795	10953470
Exhaust Manifold Bolts	Threadlock	12345493	10953488
Flywheel/Flex Plate Bolts	Threadlock	12345382	10953489
Fuel Injection Fuel Rail Bolts	Threadlock	12345382	10953489
Ignition Coil Bracket-to-Valve Cover Studs	Threadlock	12345382	10953489
Ignition Coil-to-Bracket Bolts	Threadlock	12345382	10953489
Intake Manifold Bolts	Threadlock	12345382	10953489
Oil Pan Oil Gallery Plug Threads	Sealant	12346004	10953480
Oil Pan Surface at Front Cover and Rear Housing	Sealant	12378521	88901148
Thread Repair Component Cleaner	Cleaner	12346139	10953463
Thread Repair Component Cleaner	Cleaner	12377981	10953463
Thread Repair Cutting Oil	Lubricant	1052864	992881

Scheme 6

Scheme 6: Engine Block - Front/Rear Views

Hole	Thread Size	Insert	Drill	Counterbore Tool	Tap	Driver	Drill Depth - Maximum mm (in)	Tap Depth - Maximum mm (in)
J 42385
1	M8 x 1.25	210	206	207	208	209	22.5 (0.885)	17.5 (0.688)
2	M10 x 1.5	215	211	212	213	214	27.5 (1.08)	22.0 (0.866)
3	M10 x 1.5	215	211	212	213	214	Thru	Thru
4	M8 x 1.25	210	206	207	208	209	Thru	Thru
5	M10 x 1.5	215	211	212	213	214	25.0 (0.984)	19.5 (0.767)
6	M10 x 1.5	215	211	212	213	214	32.5 (1.279)	25.0 (0.984)
7	M10 x 1.5	215	211	212	213	214	Thru	Thru
Bolt hole 6 is drilled and tapped for aluminum block applications only.

Engine Block - Front/Rear Views

Scheme 7

Scheme 7: Engine Block - Left/Right Side Views

Hole	Thread Size	Insert	Drill	Counterbore Tool	Tap	Driver	Drill Depth - Maximum mm (in)	Tap Depth - Maximum mm (in)
J 42385
1	M8 x 1.25	210	206	207	208	209	22.5 (0.885)	17.5 (0.688)
2	M6 x 1.0	205	201	202	203	204	22.5 (0.885)	15.0 (0.688)
3	M8 x 1.25	210	206	207	208	209	28.5 (1.122)	23.0 (0.905)
4	M8 x 1.25	210	206	207	208	209	21.5 (0.846)	16.0 (0.629)
5	M10 x 1.25	215	211	212	213	214	29.0 (1.141)	23.0 (0.905)
6	M10 x 1.5	215	211	212	213	214	27.0 (1.062)	21.5 (0.846)
7	M16 x 1.5	N/A	N/A	N/A	N/A	N/A	N/A	N/A
8	M11 x 2.0	108	105	N/A	106	107	69.0 (2.72)	60.0 (2.36)
Bolt hole 8 has a 30 mm (1.18 in) counterbore included in the 69.0 mm (2.72 in) drill depth. Use sleeve J 42385-315 with the drill and tap.

Engine Block - Left/Right Side Views

Scheme 8

Scheme 8: Engine Block - Top/Bottom Views

Hole	Thread Size	Insert	Drill	Counterbore Tool	Tap	Driver	Drill Depth - Maximum mm (in)	Tap Depth - Maximum mm (in)
J 42385
1	M8 x 1.25	210	206	207	208	209	22.5 (0.885)	17.5 (0.688)
2	M10 x 1.5	215	211	212	213	214	42.5 (1.67)	37.0 (1.45)
3	M10 x 2.0	104	101	N/A	102	103	31.0 (1.22)	25.5 (1.0)
4	M10 x 2.0	104	101	N/A	102	103	53.5 (2.10)	44.0 (1.73)
5	M8 x 1.25	210	206	207	208	209	26.5 (1.043)	19.0 (0.748)
Bolt hole 2 has an 11.5 mm (0.452 in) counterbore included in the 42.5 mm (1.67 in) drill depth. Use sleeve J 42385-311 with the drill and tap. Bolt hole 3 has a 1.5 mm (0.059 in) counterbore included in the 31.0 mm (1.22 in) drill depth. Use sleeve J 42385-316 with the drill and tap. Bolt hole 4 has a 20.5 mm (0.807 in) counterbore included in the 53.5 mm (2.10 in) drill depth.

Engine Block - Top/Bottom Views

Scheme 9

Scheme 9: Cylinder Head - Top/End Views

Hole	Thread Size	Insert	Drill	Counterbore Tool	Tap	Driver	Drill Depth - Maximum mm (in)	Tap Depth - Maximum mm (in)
J 42385
1	M8 x 1.25	210	206	207	208	209	26.5 (1.04)	19.0 (0.784)
2	M6 x 1.0	205	201	202	203	204	20.05 (0.789)	16.05 (0.632)
3	M10 x 1.5	215	211	212	213	214	28.0 (1.10)	20.0 (0.787)
4	M6 x 1.0	205	201	202	203	204	22.5 (0.885)	15.0 (0.688)

Cylinder Head - Top/End Views

Scheme 10

Scheme 10: Cylinder Head - Intake/Exhaust Side Views

Hole	Thread Size	Insert	Drill	Counterbore Tool	Tap	Driver	Drill Depth - Maximum mm (in)	Tap Depth - Maximum mm (in)
J 42385
1	M6 x 1.0	205	201	202	203	204	Thru	Thru
2	M10 x 1.5	215	211	212	213	214	28.0 (1.10)	20.0 (0.787)
3	M8 x 1.25	210	206	207	208	209	21.0 (0.826)	16.0 (0.629)
4	M14 x 1.25	N/A	N/A	N/A	N/A	N/A	N/A	N/A
5	M12 x 1.5	N/A	N/A	N/A	N/A	N/A	N/A	N/A

Cylinder Head - Intake/Exhaust Side Views

Scheme 11

Scheme 11: Disassembled Views

Callout	Component Name
1	Bolt
2	Nut
3	Throttle Body
4	Throttle Body Seal
5	Manifold Absolute Pressure (MAP) Sensor O-ring Seal
6	MAP Sensor
7	Sequential Multi-Port Fuel Injector Assembly with Fuel Rail
8	Bolt
9	Fuel Injection Fuel Rail Bracket
10	Evaporative (EVAP) Emission Canister Purge Tube
11	EVAP Emission Canister Purge Solenoid Valve
12	EVAP Emission Canister Purge Tube
13	Bolt
14	Fuel Injection Fuel Rail Stop
15	Bolt
16	Intake Manifold
17	Intake Manifold Seal
18	Intake Manifold Gasket
19	Engine Coolant Air Bleed Plug
20	Engine Oil Pressure Sensor
21	Valve Lifter Oil Filter
22	Valve Lifter Oil Filter Seal
23	Bolt
24	Bolt
25	Engine Coolant Air Bleed Pipe
26	Engine Coolant Air Bleed Pipe O-ring Seal
27	Engine Valley Cover
28	Gasket
29	Engine Block

Scheme 12

Callout	Component Name
100	Engine Block
209	Valve Lifter - Non-Active Fuel Management
210	Valve Lifter Guide
211	Valve Lifter Guide Bolt
212	Valve Push Rod
213	Valve Rocker Arm
214	Valve Rocker Arm Pivot Support Bolt
215	Valve Rocker Arm Pivot Support
216	Cylinder Head Core Hole Plug
217	Cylinder Head Gasket
218	Cylinder Head
219	Valve Lifter - Active Fuel Management
220	Cylinder Head Bolt - M10
221	Cylinder Head Bolt - M8
222	Valve Stem Oil Seal
223	Valve Spring
224	Valve Spring Cap
225	Valve Stem Key
226	Cylinder Head Core Hole Plug
227	Intake Valve
228	Exhaust Valve
229	Cylinder Head Plug
230	Cylinder Head Locating Pin
422	Oil Fill Tube O-Ring Seal
423	Oil Fill Tube
424	Oil Fill Cap
450	Oil Fill Cap O-Ring Seal
504	Valve Rocker Arm Cover Gasket
504	Valve Rocker Arm Cover Gasket
505	Valve Rocker Arm Cover
505	Valve Rocker Arm Cover
516	Valve Rocker Arm Cover Bolt
600	Exhaust Manifold
601	Exhaust Manifold Gasket
602	Exhaust Manifold Flange Bolt
603	Exhaust Manifold Heat Shield
604	Exhaust Manifold Heat Shield Bolt
700	Positive Crankcase Ventilation (PCV) Hose - Fresh Air
716	PCV Hose - Dirty Air
719	Ignition Coil Bracket
720	Ignition Coil Bracket Bolt
721	Ignition Coil Wire Harness Assembly
722	Ignition Coil
723	Ignition Coil Bolt
724	Spark Plug Wire
725	Engine Coolant Temperature Sensor
726	Spark Plug

Scheme 13

Callout	Component Name
100	Engine Block
138	Crankshaft Balancer
139	Crankshaft Balancer Bolt
140	Crankshaft Front Oil Seal
200	Camshaft
201	Camshaft Bearing
202	Camshaft Sprocket Locating Pin
203	Camshaft Retainer
204	Camshaft Retainer Bolt
207	Crankshaft Sprocket
208	Timing Chain
231	Timing Chain Tensioner Bolt
232	Timing Chain Tensioner
234	Camshaft Position (CMP) Actuator Solenoid Valve
235	CMP Actuator
300	Water Pump
301	Water Pump Bolt
302	Water Pump Inlet Bolt
303	Water Pump Inlet
305	Engine Coolant Thermostat
306	Water Pump Gasket
408	Bolt
409	Oil Pump Housing Cover
410	Oil Pump Vane Ring
410	Oil Pump Vane Ring
411	Oil Pump Bolt
412	Oil Pump Slide
413	Oil Pump Housing
414	Oil Pump Slide Seal
415	Oil Pump Slide Seal
416	Oil Pump Slide Spring
417	Oil Level Indicator O-Ring Seal
418	Oil Level Indicator
419	Oil Level Indicator Tube Bolt
420	Oil Level Indicator Tube
421	O-Ring
456	Oil Pump Rotor
457	Oil Pump Vane
458	Oil Pump Housing
501	Engine Front Cover Bolt
502	Engine Front Cover
503	Engine Front Cover Gasket
703	CMP Sensor
704	CMP Sensor O-Ring Seal
705	CMP Sensor Bolt
737	CMP Sensor Wire Harness Assembly
738	CMP Sensor Wire Harness Assembly Bolt
738	CMP Sensor Wire Harness Assembly Bolt
751	CMP Actuator Hub Cover Bolt
752	CMP Actuator Magnet
753	CMP Actuator Magnet Gasket

Scheme 14

Callout	Component Name
100	Engine Block
132	Flex Plate - Automatic Transmission
133	Flywheel Bolt
141	Crankshaft Rear Oil Seal
517	Crankshaft Rear Oil Seal Housing Bolt
518	Crankshaft Rear Oil Seal Housing
519	Crankshaft Rear Oil Seal Housing Gasket

Scheme 15

Callout	Component Name
1	Engine Block
2	Piston Pin Retainer
3	Piston Pin
4	Piston Ring Set
5	Piston
6	Connecting Rod
7	Connecting Rod Bearing
8	Connecting Rod Cap
9	Connecting Rod Bolt
10	Crankshaft Bearing
11	Crankshaft Thrust Bearing
12	Crankshaft Balancer Key
13	Crankshaft
14	Crankshaft Bearing Cap Stud - M10
15	Crankshaft Bearing Cap Bolt - M10
16	Crankshaft Bearing Cap
17	Crankshaft Bearing Cap Bolt - M8
18	Crankshaft Oil Deflector
19	Crankshaft Oil Deflector Nut
20	Oil Pan Gasket
21	Oil Pan Baffle Bolt
22	Oil Pan Baffle
23	Oil Pan Closeout Cover
24	Oil Pan Closeout Cover Bolt
25	Active Fuel Management Oil Pressure Relief Valve
26	Oil Pan Cover Gasket
27	Oil Pan Cover
28	Oil Pan Cover Bolt
29	Oil Filter Fitting
30	Oil Filter
31	Oil Pan Bolt
32	Oil Pan Bolt
33	Oil Pan
34	Oil Pan Drain Plug
35	Oil Pan Closeout Cover
36	Oil Pan Closeout Cover Bolt
37	Oil Pump Suction Pipe Nut
38	Oil Pump Suction Pipe Bolt
39	Oil Pump Screen Assembly with Oil Pump Suction Pipe
40	Oil Pump O-Ring Seal

Scheme 16

Callout	Component Name
100	Engine Block
100	Engine Block
101	Oil Gallery Plug - Front
110	O-Ring
111	Oil Gallery Plug - Rear
112	Oil Gallery Plug - Side
113	Washer
114	Engine Coolant Heater
115	Washer
116	Oil Gallery Plug - Side
117	Washer
130	Transmission Housing Locating Pin
145	Washer
146	Engine Block Coolant Drain Hole Plug
701	Crankshaft Position (CKP) Sensor
702	O-Ring
718	Knock Sensor
718	Knock Sensor
739	Bolt
739	Bolt
750	CKP Sensor Bolt

Scheme 17

Callout	Component Name
408	Bolt
409	Oil Pump Housing Cover
410	Oil Pump Vane Ring
410	Oil Pump Vane Ring
412	Oil Pump Slide
413	Oil Pump Housing
414	Oil Pump Slide Seal
415	Oil Pump Slide Seal
416	Oil Pump Slide Spring
456	Oil Pump Rotor
457	Oil Pump Vane
458	Oil Pump Housing

Scheme 18

Scheme 18: Engine Identification

The vehicle identification number (VIN) is located on the left side rear of the engine block (1) and is typically a 9 digit number stamped or laser-etched onto the engine at the vehicle assembly plant.

The first digit identifies the division.
The second digit identifies the model year.
The third digit identifies the assembly plant.
The fourth through ninth digits are the last 6 digits of the VIN.

Strategy Based Diagnostics

Perform the «Diagnostic System Check - Vehicle»(/cadillac/escalade/gmt900-2006-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) before using the symptom tables.
Review the system operations in order to familiarize yourself with the system functions. Refer to «Disassembled Views»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) , «Engine Content Specifications»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__engine-content-specifications) , «Engine Component Description»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) , «Lubrication Description»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) , «Camshaft Position Actuator and Solenoid Valve Description»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) , «Cylinder Deactivation (Active Fuel Management) System Description»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) and «Hybrid Modes of Operation Description»(/cadillac/escalade/gmt900-2006-2014/remont/engine-control-systems/#hybrid-engine-controls-description-and-operation__hybrid-modes-of-operation-description) .

All diagnosis on a vehicle should follow a logical process. Strategy based diagnostics is a uniform approach for repairing all systems. The diagnostic flow may always be used in order to resolve a system condition. The diagnostic flow is the place to start when repairs are necessary. For a detailed explanation, refer to Strategy Based Diagnosis .

Visual/Physical Inspection

Inspect for aftermarket devices which could affect the operation of the engine. Refer to «Checking Aftermarket Accessories»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__checking-aftermarket-accessories) .
Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.
Inspect for the correct oil level, proper oil viscosity, and correct filter application.
Verify the exact operating conditions under which the concern exists. Note factors such as engine RPM, ambient temperature, engine temperature, amount of engine warm-up time, and other specifics.
Compare the engine sounds, if applicable, to a known good engine and make sure you are not trying to correct a normal condition.

Intermittent

Test the vehicle under the same conditions that the customer reported in order to verify the system is operating properly.

Symptom List

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom

«Base Engine Misfire without Internal Engine Noises»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__base-engine-misfire-without-internal-engine)
«Base Engine Misfire with Abnormal Internal Lower Engine Noises»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__base-engine-misfire-with-abnormal-internal)
«Base Engine Misfire with Abnormal Valve Train Noise»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__base-engine-misfire-with-abnormal-valve)
«Base Engine Misfire with Coolant Consumption»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__base-engine-misfire-with-coolant-consumption)
«Base Engine Misfire with Excessive Oil Consumption»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__base-engine-misfire-with-excessive-oil)
«Engine Noise on Start-Up, but Only Lasting a Few Seconds»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__engine-noise-on-start-up-but-only)
«Upper Engine Noise, Regardless of Engine Speed»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__upper-engine-noise-regardless-of-engine)
«Lower Engine Noise, Regardless of Engine Speed»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__lower-engine-noise-regardless-of-engine)
«Engine Noise Under Load»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__engine-noise-under-load)
«Engine Will Not Crank - Crankshaft Will Not Rotate»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__engine-will-not-crank-crankshaft)
«Coolant in Combustion Chamber»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__coolant-in-combustion-chamber)
«Coolant in Engine Oil»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__coolant-in-engine-oil)
«Cylinder Deactivation (Active Fuel Management) System Diagnosis»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__cylinder-deactivation-active-fuel-management-system)
«Engine Compression Test»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__engine-compression-test)
«Cylinder Deactivation (Active Fuel Management) System Compression Test»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__cylinder-deactivation-active-fuel-management-system)
«Cylinder Leakage Test»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1)
«Oil Consumption Diagnosis»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__oil-consumption-diagnosis)
«Oil Pressure Diagnosis and Testing»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__oil-pressure-diagnosis-and-testing)
«Cylinder Deactivation (Active Fuel Management) Valve Lifter Oil Manifold Diagnosis and Testing»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__cylinder-deactivation-active-fuel-management-valve)
«Cylinder Deactivation (Active Fuel Management) Oil Pressure Relief Valve Diagnosis and Testing»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__cylinder-deactivation-active-fuel-management-oil)
«Camshaft Position Actuator and Solenoid Valve Diagnosis and Testing»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__camshaft-position-actuator-and-solenoid-valve)
«Oil Leak Diagnosis»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__oil-leak-diagnosis)
«Crankcase Ventilation System Inspection/Diagnosis»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-diagnostic-information-and-procedures__crankcase-ventilation-system-inspectiondiagnosis)
«Drive Belt Chirping, Squeal, and Whine Diagnosis»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1)
«Drive Belt Rumbling and Vibration Diagnosis»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1)
«Drive Belt Falls Off and Excessive Wear Diagnosis»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1)
«Drive Belt Tensioner Diagnosis»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__drive-belt-tensioner-diagnosis)

Base Engine Misfire without Internal Engine Noises

Cause	Correction
Review the system operation in order to familiarize yourself with the system functions. As required, disable the auto-stop function prior to repair. Refer to Hybrid Modes of Operation Description .
Fuel injector harness connectors are connected to the incorrect fuel injectors/cylinders	Relocate the fuel injector harness connectors, as required.
Abnormalities, such as severe cracking, bumps, or missing areas in the accessory drive belt Abnormalities in the accessory drive system and/or components may cause engine RPM variations and lead to a misfire diagnostic trouble code (DTC). A misfire code may be present without an actual misfire condition.	Replace the drive belt, as required. Refer to Drive Belt Replacement .
Worn, damaged, or mis-aligned accessory drive components or excessive pulley runout May lead to a misfire DTC. A misfire code may be present without an actual misfire condition.	Inspect the components and repair or replace, as required.
Loose or improperly installed engine flex plate or crankshaft balancer A misfire code may be present without an actual misfire condition.	Repair or replace the flex plate and/or balancer, as required. Refer to Automatic Transmission Flex Plate Replacement , or Crankshaft Balancer Replacement .
Restricted exhaust system A severe restriction in the exhaust flow can cause significant loss of engine performance and may set a DTC. Possible causes of restrictions include collapsed or dented pipes or plugged mufflers and/or catalytic converters.	Repair or replace, as required.
Improperly installed or damaged vacuum hoses	Repair or replace, as required.
Improper sealing between the intake manifold and cylinder heads or throttle body	Replace the intake manifold, gaskets, cylinder heads, and/or throttle body, as required.
Improperly installed or damaged manifold absolute pressure (MAP) sensor The sealing grommet of the MAP sensor should not be torn or damaged.	Repair or replace the MAP sensor, as required.
Worn or loose rocker arms The rocker arm bearing end caps and/or needle bearings should be intact and in the proper position.	Replace the valve rocker arms, as required.
Worn or bent pushrods	Replace the pushrods, rocker arms, and lifters, as required. Inspect the top of the pistons for valve contact. If the top of the piston shows valve contact, replace the piston and pin assembly.
Stuck valves Carbon buildup on the valve stem can cause the valve to not close properly.	Repair or replace, as required.
Excessively worn or mis-aligned timing chain	Replace the timing chain, tensioner, and sprockets, as required.
Worn camshaft lobes	Replace the camshaft and valve lifters.
Excessive oil pressure A lubrication system with excessive oil pressure may lead to excessive valve lifter pump-up and loss of compression.	Perform an oil pressure test. Refer to Oil Pressure Diagnosis and Testing . Repair or replace the oil pump, as required.
Faulty cylinder head gaskets and/or cracking or other damage to the cylinder heads and engine block cooling system passages Coolant consumption may or may not cause the engine to overheat.	Inspect for spark plugs saturated by coolant. Refer to Spark Plug Inspection . Inspect the cylinder heads, engine block, and/or head gaskets. Refer to Coolant in Combustion Chamber . Repair or replace, as required.
Worn piston rings Oil consumption may or may not cause the engine to misfire.	Inspect the spark plugs for oil deposits. Refer to Spark Plug Inspection . Inspect the cylinders for a loss of compression. Refer to Engine Compression Test . Perform cylinder leak down and compression testing to identify the cause. Refer to Cylinder Leakage Test . Repair or replace, as required.
A damaged crankshaft reluctor wheel A damaged crankshaft reluctor wheel can result in different symptoms depending on the severity and location of the damage. Systems with electronic communications, DIS or coil per cylinder, and severe reluctor ring damage may exhibit periodic loss of crankshaft position, stop delivering a signal, and then sync the crankshaft position. Systems with electronic communication, DIS or coil per cylinder, and slight reluctor ring damage may exhibit no loss of crankshaft position and no misfire may occur. However, a P0300 DTC may be set. Systems with mechanical communications, high voltage switch, and severe reluctor ring damage may cause additional pulses and effect fuel and spark delivery to the point of generating a P0300 DTC or P0336.	Replace the sensor and/or crankshaft, as required.
Improper operation of the active fuel management system	Repair, as required. Refer to Cylinder Deactivation (Active Fuel Management) System Diagnosis .
Improper operation of the camshaft position (CMP) actuator and/or control system	Repair, as required. Refer to Camshaft Position Actuator and Solenoid Valve Diagnosis and Testing .

Base Engine Misfire with Abnormal Internal Lower Engine Noises

Cause	Correction
Review the system operation in order to familiarize yourself with the system functions. As required, disable the auto-stop function prior to repair. Refer to Hybrid Modes of Operation Description .
Abnormalities, such as severe cracking, bumps or missing areas in the accessory drive belt Abnormalities in the accessory drive system and/or components may cause engine RPM variations, noises similar to a faulty lower engine and also lead to a misfire condition. A misfire code may be present without an actual misfire condition.	Replace the drive belt, as required. Refer to Drive Belt Replacement .
Worn, damaged, or mis-aligned accessory drive components or excessive pulley runout A misfire code may be present without an actual misfire condition.	Inspect the components and repair or replace, as required.
Loose or improperly installed engine flex plate or crankshaft balancer A misfire code may be present without an actual misfire condition.	Repair or replace the flex plate and/or balancer, as required. Refer to Automatic Transmission Flex Plate Replacement , or Crankshaft Balancer Replacement .
Worn piston rings Oil consumption may or may not cause the engine to misfire.	Inspect the spark plugs for oil deposits. Refer to Spark Plug Inspection . Inspect the cylinders for a loss of compression. Refer to Engine Compression Test . Perform cylinder leak down and compression testing to determine the cause. Refer to Cylinder Leakage Test . Repair or replace, as required.
Worn crankshaft thrust bearings Severely worn thrust surfaces on the crankshaft and/or thrust bearing may permit fore and aft movement of the crankshaft and create a DTC without an actual misfire condition.	Replace the crankshaft and bearings, as required.

Base Engine Misfire with Abnormal Valve Train Noise

Cause	Correction
Review the system operation in order to familiarize yourself with the system functions. As required, disable the auto-stop function prior to repair. Refer to Hybrid Modes of Operation Description .
Low oil pressure	Perform an oil pressure test. Refer to Oil Pressure Diagnosis and Testing . Repair or replace components, as required.
Worn or loose rocker arms The rocker arm bearing end caps and/or needle bearings should be intact within the rocker arm assembly.	Replace the valve rocker arms, as required.
Worn or bent pushrods	Replace the pushrods, rocker arms, and lifters, as required. Inspect the top of the pistons for valve contact. If the top of the piston shows valve contact, replace the piston and pin assembly.
Stuck valves Carbon buildup on the valve stem can cause the valve to not close properly.	Repair or replace, as required.
Excessively worn or mis-aligned timing chain	Replace the timing chain, tensioner, and sprockets, as required.
Worn camshaft lobes	Replace the camshaft and valve lifters.
Sticking lifters	Replace, as required.
Cut or damaged oil pump screen O-ring seal which may cause aeration of the engine oil	Repair, as required. Refer to Oil Pressure Diagnosis and Testing .
Improper operation of the active fuel management oil pressure relief valve	Repair, as required. Refer to Cylinder Deactivation (Active Fuel Management) Oil Pressure Relief Valve Diagnosis and Testing .
Improper operation of the active fuel management system	Repair, as required. Refer to Cylinder Deactivation (Active Fuel Management) System Diagnosis .
Improper operation of the camshaft position (CMP) actuator and/or control system	Repair, as required. Refer to Camshaft Position Actuator and Solenoid Valve Diagnosis and Testing .

Base Engine Misfire with Coolant Consumption

Cause	Correction
Review the system operation in order to familiarize yourself with the system functions. As required, disable the auto-stop function prior to repair. Refer to Hybrid Modes of Operation Description .
Faulty cylinder head gaskets and/or cracking or other damage to the cylinder heads and engine block cooling system passages Coolant consumption may or may not cause the engine to overheat.	Inspect for spark plugs saturated by coolant. Refer to Spark Plug Inspection . Perform a cylinder leak down test. Refer to Cylinder Leakage Test . Inspect the cylinder heads and engine block for damage to the coolant passages and/or a faulty head gasket. Refer to Coolant in Combustion Chamber . Repair or replace, as required.

Base Engine Misfire with Excessive Oil Consumption

Cause	Correction
Review the system operation in order to familiarize yourself with the system functions. As required, disable the auto-stop function prior to repair. Refer to Hybrid Modes of Operation Description .
Worn valves, valve guides and/or valve stem oil seals	Inspect the spark plugs for oil deposits. Refer to Spark Plug Inspection . Repair or replace, as required.
Worn piston rings Oil consumption may or may not cause the engine to misfire.	Inspect the spark plugs for oil deposits. Refer to Spark Plug Inspection . Inspect the cylinders for a loss of compression. Refer to Engine Compression Test . Perform cylinder leak down and compression testing to determine the cause. Refer to Cylinder Leakage Test . Repair or replace, as required.

Engine Noise on Start-Up, but Only Lasting a Few Seconds

Cause	Correction
Review the system operation in order to familiarize yourself with the system functions. As required, disable the auto-stop function prior to repair. Refer to Hybrid Modes of Operation Description .
Incorrect oil filter without anti-drainback feature	Install the correct oil filter.
Incorrect oil viscosity	Drain the oil. Install the correct viscosity oil.
High valve lifter leak down rate	Replace the lifters, as required.
Worn crankshaft thrust bearing	Inspect the crankshaft end play. Inspect the thrust bearing and crankshaft. Repair or replace, as required.
Damaged or faulty oil filter bypass valve The bypass valve is now internal to the oil filter.	Inspect the oil filter bypass valve for proper operation. Repair or replace the oil filter, as required.

Upper Engine Noise, Regardless of Engine Speed

Cause	Correction
Review the system operation in order to familiarize yourself with the system functions. As required, disable the auto-stop function prior to repair. Refer to Hybrid Modes of Operation Description .
Low oil pressure	Perform an oil pressure test. Refer to Oil Pressure Diagnosis and Testing . Repair or replace components, as required.
Loose and/or worn valve rocker arm attachments	Inspect the valve rocker arm, bolt, and pedestal. Repair or replace, as required.
Worn or damaged valve rocker arm	Inspect the rocker arm for wear or missing needle bearings Replace the valve rocker arms, as required.
Bent or damaged push rod	Inspect the following components and replace, as required: The valve rocker arm The valve push rod The valve lifter The valve lifter guide The piston Inspect the top of the pistons for valve contact. If the top of the piston shows valve contact, replace the piston and pin assembly.
Improper lubrication to the valve rocker arms	Inspect the following components and repair or replace, as required: The valve rocker arm The valve push rod The valve lifter The oil filter bypass valve The valve is now internal to the oil filter. The oil pump and pump screen Restrictions within the engine block oil galleries
Broken valve spring	Replace the valve spring and spring shim.
Worn or dirty valve lifters	Replace the valve lifters, as required.
Active fuel management valve lifter with a broken spring	Replace the valve lifters, as required.
Improper operation of the active fuel management oil pressure relief valve	Repair, as required. Refer to Cylinder Deactivation (Active Fuel Management) Oil Pressure Relief Valve Diagnosis and Testing .
Improper operation of the camshaft position (CMP) actuator and/or control system	Repair, as required. Refer to Camshaft Position Actuator and Solenoid Valve Diagnosis and Testing .
Stretched or broken timing chain and/or damaged sprocket teeth	Replace the timing chain, tensioner, sprocket, and camshaft position actuator.
Worn engine camshaft lobes	Inspect the engine camshaft lobes. Replace the camshaft and valve lifters, as required.
Worn valve guides or valve stems	Inspect the following components and repair, as required: The valves The valve guides
Stuck valves Carbon on the valve stem or valve seat may cause the valve to stay open.	Inspect the following components and repair, as required: The valves The valve guides
Cut or damaged oil pump screen O-ring seal which may cause aeration of the engine oil	Repair, as required. Refer to Oil Pressure Diagnosis and Testing .

Lower Engine Noise, Regardless of Engine Speed

Cause	Correction
Review the system operation in order to familiarize yourself with the system functions. As required, disable the auto-stop function prior to repair. Refer to Hybrid Modes of Operation Description .
Low oil pressure	Perform an oil pressure test. Refer to Oil Pressure Diagnosis and Testing . Repair or replace components, as required.
Worn accessory drive components Abnormalities such as severe cracking, bumps or missing areas in the accessory drive belt and/or misalignment of system components.	Inspect the accessory drive system. Repair or replace, as required.
Loose or damaged crankshaft balancer	Inspect the crankshaft balancer. Repair or replace, as required.
Detonation or spark knock	Verify the correct operation of the ignition controls system. Refer to Symptoms - Engine Controls .
Loose flex plate-to-dampener bolts	Inspect the dampener bolts and flex plate. Repair or replace, as required.
Loose or damaged flex plate	Repair or replace the flex plate.
Oil pump screen loose, damaged, or restricted	Inspect the oil pump screen. Repair or replace, as required.
Excessive piston-to-cylinder bore clearance	Inspect the piston and cylinder bore. Repair, as required.
Excessive piston pin-to-bore clearance	Inspect the piston, pin, and connecting rod. Replace the piston and pin as an assembly, as required.
Excessive connecting rod bearing clearance	Inspect the following components and repair, as required: The connecting rod bearings The connecting rods The crankshaft The crankshaft journals
Excessive crankshaft bearing clearance	Inspect the following components and repair, as required: The crankshaft bearings The crankshaft journals
Incorrect piston, piston pin, and connecting rod installation Pistons must be installed with the mark or dimple on the top of the piston facing the front of the engine. Piston pins must be centered in the connecting rod pin bore.	Verify the pistons, piston pins and connecting rods are installed correctly. Refer to Piston, Connecting Rod, and Bearing Installation . Repair, as required.

Engine Noise Under Load

Cause	Correction
Review the system operation in order to familiarize yourself with the system functions. As required, disable the auto-stop function prior to repair. Refer to Hybrid Modes of Operation Description .
Low oil pressure	Perform an oil pressure test. Refer to Oil Pressure Diagnosis and Testing . Repair or replace components, as required.
Detonation or spark knock	Verify the correct operation of the ignition controls. Refer to Symptoms - Engine Controls .
Loose flex plate-to-dampener bolts	Inspect the dampener bolts and flex plate. Repair, as required.
Cracked flex plate - automatic transmission	Inspect the flex plate bolts and flex plate. Repair, as required.
Excessive connecting rod bearing clearance	Inspect the following components and repair, as required: The connecting rod bearings The connecting rods The crankshaft
Excessive crankshaft bearing clearance	Inspect the following components and repair, as required: The crankshaft bearings The crankshaft journals The cylinder block crankshaft bearing bore

Engine Will Not Crank - Crankshaft Will Not Rotate

Cause	Correction
Review the system operation in order to familiarize yourself with the system functions. As required, disable the auto-stop function prior to repair. Refer to Hybrid Modes of Operation Description .
Seized accessory drive system component	Remove the accessory drive belt. Confirm that the engine will rotate. Rotate the crankshaft by hand at the crankshaft balancer or flex plate location. Repair or replace the components, as required.
Seized transmission	Remove the dampener-to-flex plate bolts. Confirm that the engine will rotate. Rotate the crankshaft by hand at the crankshaft balancer or flex plate location. Repair or replace the components, as required.
Broken timing chain	Inspect the timing chain, tensioner, and sprockets. Repair or replace the components, as required.
Seized timing chain or timing sprockets	Inspect the timing chain and sprockets for foreign material or a seized chain. Repair or replace the components, as required.
Seized or broken camshaft	Inspect the camshaft and the camshaft bearings. Repair or replace the components, as required.
Bent valve in the cylinder head	Inspect the valves and the cylinder heads. Repair or replace the components, as required.
Seized oil pump	Inspect the oil pump assembly. Repair or replace, as required.
Hydraulically locked cylinder Coolant/antifreeze in the cylinder Oil in the cylinder Fuel in the cylinder	Remove the spark plugs and inspect for fluid in the cylinder. When rotating the engine with the spark plugs removed, the piston, on compression stroke, will push fluid from the combustion chamber. Refer to Coolant in Combustion Chamber . Inspect for failed/broken head gaskets. Inspect for a cracked engine block or cylinder head. Inspect for a sticking fuel injector. Repair or replace the components, as required.
Material in the cylinder Broken valve Broken piston rings Piston material Foreign material	Inspect the cylinder for damaged components and/or foreign materials. Repair or replace the components, as required.
Seized crankshaft or connecting rod bearings	Inspect crankshaft and connecting rod bearings. Repair or replace the components, as required.
Bent or broken connecting rod	Inspect the connecting rods. Replace the piston and pin as an assembly, as required.
Broken crankshaft	Inspect the crankshaft. Repair or replace the components, as required.

Coolant in Combustion Chamber

Cause	Correction
Review the system operation in order to familiarize yourself with the system functions. As required, disable the auto-stop function prior to repair. Refer to Hybrid Modes of Operation Description .
DEFINITION: Excessive white smoke and/or coolant type odor coming from the exhaust pipe may indicate coolant in the combustion chamber. Low coolant levels, an inoperative cooling fan, or a faulty thermostat may lead to an engine overtemperature condition, which may cause engine component damage. A slower than normal cranking speed may indicate coolant entering the combustion chamber. Refer to Engine Will Not Crank - Crankshaft Will Not Rotate . Remove the spark plugs and inspect for spark plugs saturated by coolant or coolant in the cylinder bore. Inspect by performing a cylinder leak-down test. During this test, excessive air bubbles within the coolant may indicate a faulty gasket or damaged component. Inspect by performing a cylinder compression test. Two cylinders side-by-side on the engine block, with low compression, may indicate a failed cylinder head gasket. Refer to Engine Compression Test .
Cracked intake manifold or failed gasket	Replace the components, as required.
Faulty cylinder head gasket	Replace the head gasket and components, as required. Refer to Cylinder Head Cleaning and Inspection and Cylinder Head Replacement - Left Side or Cylinder Head Replacement - Right Side .
Warped cylinder head	Machine the cylinder head to the proper flatness, if applicable and replace the cylinder head gasket. Refer to Cylinder Head Cleaning and Inspection .
Cracked cylinder head	Replace the cylinder head and gasket.
Cracked cylinder liner or engine block	Replace the components, as required.
Cylinder head or engine block porosity	Replace the components, as required.

Coolant in Engine Oil

Cause	Correction
Review the system operation in order to familiarize yourself with the system functions. As required, disable the auto-stop function prior to repair. Refer to Hybrid Modes of Operation Description .
DEFINITION: Foamy or discolored oil or an engine oil overfill condition may indicate coolant entering the engine crankcase. Low coolant levels, an inoperative cooling fan, or a faulty thermostat may lead to an overtemperature condition which may cause engine component damage. Contaminated engine oil and oil filter should be changed. Inspect the oil for excessive foaming or an overfill condition. Oil diluted by coolant may not properly lubricate the crankshaft bearings and may lead to component damage. Refer to Lower Engine Noise, Regardless of Engine Speed . Inspect by performing a cylinder leak-down test. During this test, excessive air bubbles within the cooling system may indicate a faulty gasket or damaged component. Inspect by performing a cylinder compression test. Two cylinders side-by-side on the engine block with low compression may indicate a failed cylinder head gasket. Refer to Engine Compression Test .
Faulty cylinder head gasket	Replace the head gasket and components, as required. Refer to Cylinder Head Cleaning and Inspection and Cylinder Head Replacement - Left Side or Cylinder Head Replacement - Right Side .
Warped cylinder head	Machine the cylinder head to proper flatness, if applicable, and replace the cylinder head gasket. Refer to Cylinder Head Cleaning and Inspection .
Cracked cylinder head	Replace the cylinder head and gasket.
Cracked cylinder liner or engine block	Replace the components, as required.
Cylinder head, block, or manifold porosity	Replace the components, as required.

Cylinder Deactivation (Active Fuel Management) System Diagnosis

Review the system operation in order to familiarize yourself with the system functions. As required, disable the auto-stop function prior to repair. Refer to «Hybrid Modes of Operation Description»(/cadillac/escalade/gmt900-2006-2014/remont/engine-control-systems/#hybrid-engine-controls-description-and-operation__hybrid-modes-of-operation-description) .
Measure the engine oil level. Fill, as required.
Using the scan tool, inspect for diagnostic codes within the engine control module (ECM). Refer to «Diagnostic System Check - Vehicle»(/cadillac/escalade/gmt900-2006-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) . Repair, as required.
Verify proper engine oil pressure and operation of the active fuel management oil pressure relief valve. Refer to «Oil Pressure Diagnosis and Testing»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-diagnostic-information-and-procedures__oil-pressure-diagnosis-and-testing) .
Verify proper operation of the active fuel management system components. Refer to «Cylinder Deactivation (Active Fuel Management) System Compression Test»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__cylinder-deactivation-active-fuel-management-system) .
Remove the valve lifter oil manifold. Refer to «Valve Lifter Oil Manifold Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) .
Verify proper operation of the valve lifter oil manifold. Refer to «Cylinder Deactivation (Active Fuel Management) Valve Lifter Oil Manifold Diagnosis and Testing»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__cylinder-deactivation-active-fuel-management-valve) .
Replace the active fuel management valve lifters, as required. Both intake and exhaust lifters should be replaced in pairs. Refer to «Valve Lifter Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) .

Engine Compression Test

Review the system operation in order to familiarize yourself with the system functions. As required, disable the auto-stop function prior to repair. Refer to «Hybrid Modes of Operation Description»(/cadillac/escalade/gmt900-2006-2014/remont/engine-control-systems/#hybrid-engine-controls-description-and-operation__hybrid-modes-of-operation-description) .
Ignition key in the OFF position.
Charge the battery if the battery is not fully charged.
Disable the fuel and spark by removing the Fuel Pump relay and Powertrain relay. Refer to «Electrical Center Identification Views»(/cadillac/escalade/gmt900-2006-2014/remont/electrical-component-locations/#wiring-systems-and-power-management-component-locator-electrical-center-identification-views) for the Fuse Block - Underhood Label.
Remove the spark plug wires from the spark plugs.
Remove all of the spark plugs.
Install a compression gauge to the cylinder to be tested.
Start with the compression gauge at zero and crank the engine 3-5 seconds using the ignition key.
Return the ignition key to the OFF position.
Measure the compression for each cylinder. Record the readings.
The minimum compression in any 1 cylinder should not be less than 70 percent of the highest cylinder. For example, if the highest pressure in any 1 cylinder is 862 kPa (125 psi), the lowest allowable pressure for any other cylinder would be 607 kPa (88 psi). (862 kPa x 70% = 607 kPa) (125 psi x 70% = 88 psi). Normal - Compression builds up quickly and evenly to the specified compression for each cylinder. Piston Rings Leaking - Compression is low on the first stroke. Compression builds up with the following strokes, but does not reach normal. Compression improves considerably when you add oil. Valves Leaking - Compression is low on the first stroke. Compression usually does not build up on the following strokes. Compression does not improve much when you add oil. If 2 adjacent cylinders have lower than normal compression, and injecting oil into the cylinders does not increase the compression, the cause may be a head gasket leaking between the cylinders.
If a cylinder has low compression, inject approximately 15 ml (1 tablespoon) of engine oil into the combustion chamber through the spark plug hole. Measure the compression again and record the reading.
Reinstall the Fuel Pump relay and Powertrain relay.
Using the scan tool, clear all diagnostic codes.

Cylinder Deactivation (Active Fuel Management) System Compression Test

The Active Fuel Management (AFM) System Compression Test is a functional test of the valve lifter oil manifold and valve lifters. Using a compression gauge, the technician can monitor the specific cylinders ability to go into and out of active fuel management as commanded by the scan tool. The actual pressure values on the compression gauge are not as critical as is observing the on-off switching action of the solenoid and valve lifters.

Review the system operation in order to familiarize yourself with the system functions. As required, disable the auto-stop function prior to repair. Refer to «Hybrid Modes of Operation Description»(/cadillac/escalade/gmt900-2006-2014/remont/engine-control-systems/#hybrid-engine-controls-description-and-operation__hybrid-modes-of-operation-description) .
Measure the engine oil level. Fill, as required.
Perform the Diagnostic System Check - Vehicle. Refer to «Diagnostic System Check - Vehicle»(/cadillac/escalade/gmt900-2006-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) .
Disable the ignition system for the (AFM) cylinder to be tested, by disconnecting the electrical wire harness to the ignition coil.
Disable the fuel injection system for the (AFM) cylinder to be tested, by disconnecting the electrical wire harness to the fuel injector.
Remove the spark plug and wire for the cylinder to be tested.
Install a 0-1 378 kPa (0-200 psi) compression gauge.
Start the engine.
Using the scan tool output controls function, command the solenoid ON for the cylinder to be tested. Commanding the cylinder ON will open the applicable valve lifter oil manifold solenoid and send oil to the AFM valve lifters, deactivating the cylinder.
Depress the Schrader valve on the compression gauge, in order to release the pressure and zero the gauge. With the engine running and the cylinder IN active fuel management mode, the compression reading should be less than 172 kPa (25 psi).
Using the scan tool, de-energize or close the solenoid while observing the reading on the compression gauge. With the engine running and the cylinder NOT in active fuel management mode, the compression gauge reading should increase quickly to greater than 345 kPa (50 psi).
Test each of the 4 active fuel management cylinders, 1 at a time. If the readings are not within specifications and the switching action of the cylinder from V4 to V8 is not observed, remove and test the valve lifter oil manifold, as required. Refer to «Valve Lifter Oil Manifold Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) and «Cylinder Deactivation (Active Fuel Management) Valve Lifter Oil Manifold Diagnosis and Testing»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__cylinder-deactivation-active-fuel-management-valve) .
If the compression test has been performed and all active fuel management cylinders are operating within specifications, the active fuel management system is performing as designed and no repairs are required.
Clear the DTCs with a scan tool.

Special Tools

J 35667-A: Cylinder Head Leakdown Tester, or equivalent

For equivalent regional tools, refer to Special Tools

Test

Note. A leakage test may be performed in order to measure cylinder/combustion chamber leakage. High cylinder leakage may indicate one or more of the following conditions

Worn or burnt valves
Broken valve springs
Stuck valve lifters
Incorrect valve lash
Damaged piston
Worn piston rings
Worn or scored cylinder bore
Damaged cylinder head gasket
Cracked or damaged cylinder head
Cracked or damaged engine block

Review the system operation in order to familiarize yourself with the system functions. As required, disable the auto-stop function prior to repair. Refer to «Hybrid Modes of Operation Description»(/cadillac/escalade/gmt900-2006-2014/remont/engine-control-systems/#hybrid-engine-controls-description-and-operation__hybrid-modes-of-operation-description) .
Disconnect the battery ground negative cable.
Remove the spark plugs. Refer to «Spark Plug Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-hybrid-hp2-60l-lz1-repair-instructions) .
Rotate the crankshaft to place the piston in the cylinder being tested at top dead center (TDC) of the compression stroke.
Install the J 35667-A: tester, or equivalent.
Apply shop air pressure to the J 35667-A: tester and adjust according to the manufacturers instructions.
Record the cylinder leakage value. Cylinder leakage that exceeds 25 percent is considered excessive and may require component service. In excessive leakage situations, inspect for the following conditions: Air leakage noise at the throttle body or air inlet hose that may indicate a worn or burnt intake valve or a broken valve spring. Air leakage noise at the exhaust system tailpipe that may indicate a worn or burnt exhaust valve or a broken valve spring. Air leakage noise from the crankcase, oil level indicator tube, or oil fill tube that may indicate worn piston rings, a damaged piston, a worn or scored cylinder bore, a damaged engine block or a damaged cylinder head. Air bubbles in the cooling system may indicate a damaged cylinder head or a damaged cylinder head gasket.
Perform the leakage test on the remaining cylinders and record the values.

Oil Consumption Diagnosis

Checks	Causes
Review the system operation in order to familiarize yourself with the system functions. As required, disable the auto-stop function prior to repair. Refer to Hybrid Modes of Operation Description .
Excessive oil consumption, not due to leaks, is the use of 1 L (1 qt) or more of engine oil within 3 200 kilometers (2,000 miles).
Preliminary	The causes of excessive oil consumption may include the following conditions: External oil leaks Refer to Oil Leak Diagnosis . Incorrect oil level or improper reading of the oil level indicator With the vehicle on a level surface, run the engine for a few minutes, allow adequate drain down time, 2-3 minutes, and measure for the correct engine oil level. Improper oil viscosity Refer to the vehicle owners manual and use the recommended SAE grade and viscosity for the prevailing temperatures. Continuous high speed driving and/or severe usage Crankcase ventilation system restrictions or malfunctioning components Worn valve guides and/or valve stems Worn or improperly installed valve stem oil seals Piston rings broken, worn, or not seated properly Allow adequate time for the rings to seat. Replace worn piston rings, as necessary. Piston and rings improperly installed or not fitted to the cylinder bore

Oil Pressure Diagnosis and Testing

Tools Required

EN-47971 Oil Pressure Gauge Adapter
J 21867 Pressure Gauge

Review the system operation in order to familiarize yourself with the system functions. As required, disable the auto-stop function prior to repair. Refer to «Hybrid Modes of Operation Description»(/cadillac/escalade/gmt900-2006-2014/remont/engine-control-systems/#hybrid-engine-controls-description-and-operation__hybrid-modes-of-operation-description) .
With the vehicle on a level surface, run the vehicle for a few minutes. Allow adequate drain down time, 2-3 minutes, and measure the oil level.
If required, add the recommended grade engine oil and fill the crankcase until the oil level measures full on the oil level indicator.
Run the engine briefly, 10-15 seconds, and verify low or no oil pressure on the vehicle gauge or light.
Listen for a noisy valve train or a knocking noise.
Inspect for the following conditions: Oil diluted by water or glycol antifreeze Refer to «Coolant in Engine Oil»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__coolant-in-engine-oil) . Foamy oil, which may be caused by a cut or damaged oil pump screen O-ring seal
Remove the oil filter and install the EN-47971 (1).
Install the J 21867 (2), or equivalent to the EN-47971 (1).
Run the engine and measure the engine oil pressure.
Compare the readings to «Engine Mechanical Specifications»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__engine-mechanical-specifications) .
If the engine oil pressure is below specifications, inspect the engine for 1 or more of the following conditions: Oil pump worn or dirty Refer to «Oil Pump Cleaning and Inspection»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__oil-pump-cleaning-and-inspection) . Oil pump-to-engine block bolts loose Refer to «Oil Pump, Screen and Crankshaft Oil Deflector Installation»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-repair-instructions-off-vehicle-2-of-3__oil-pump-screen-and-crankshaft-oil) . Oil pump screen loose, plugged, or damaged Oil pump screen O-ring seal missing or damaged Malfunctioning oil pump Excessive bearing clearance Cracked, porous, or restricted oil galleries Oil gallery plugs missing or incorrectly installed Refer to «Engine Block Plug Installation»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__engine-block-plug-installation) . Improper operation of the active fuel management oil pressure relief valve Refer to «Cylinder Deactivation (Active Fuel Management) Oil Pressure Relief Valve Diagnosis and Testing»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__cylinder-deactivation-active-fuel-management-oil) .

Cylinder Deactivation (Active Fuel Management) Oil Pressure Relief Valve Diagnosis and Testing

Special Tools

EN-47971 Oil Pressure Gauge Adapter
J 21867 Pressure Gauge
J-21867-16 Oil Pressure Adapter

Review the system operation in order to familiarize yourself with the system functions. As required, disable the auto-stop function prior to repair. Refer to «Hybrid Modes of Operation Description»(/cadillac/escalade/gmt900-2006-2014/remont/engine-control-systems/#hybrid-engine-controls-description-and-operation__hybrid-modes-of-operation-description) .
Remove the oil filter and install the EN-47971 (1).
Install the J 21867 (2), or equivalent to the EN-47971 (1).
Remove the oil pressure sensor and install the J-21867-16 .
Install the J 21867 (1), or equivalent to the J-21867-16 (2).
Run the engine and measure the engine oil pressure while observing both gauges. Operate the throttle, as required, to increase and decrease the engine oil pressure. With the engine running and the lower pressure gauge (2) measuring below 379 kPa (55 psi), both gauges should display the same pressure reading. If the readings are not the same and the lower gauge (2) has a higher reading, the active fuel management oil pressure relief valve is stuck in the open position or the valve lifter oil manifold filter is plugged. With the engine running and the lower pressure gauge (2) measuring above 379 kPa (55 psi), the upper gauge (1) should display no greater than 379-517 kPa (55-75 psi). If the reading on the upper gauge (1) is greater than 517 kPa (75 psi), the active fuel management oil pressure relief valve is stuck in the closed position.
Repair, as required.

Cylinder Deactivation (Active Fuel Management) Valve Lifter Oil Manifold Diagnosis and Testing

Special Tools

EN-46999: Active Fuel Management Tester
EN-46999-1: Active Fuel Management Tester Air Adapter
EN-46999-5: Active Fuel Management Tester Harness - Small Block V8

For equivalent regional tools, refer to Special Tools .

Note. A minimum shop air source of 206 kPa (30 psi) is required for manifold testing. A water bleed is located on the side of the EN-46999: tester. Occasionally, depress the valve in order to remove excess water from the tool.

Scheme 19

The manifold bench test provides a maximum 206 kPa (30 psi) of filtered shop air to the manifold and will test each solenoid/valve for the following conditions

Proper operation
A stuck open condition - constant air flow
A stuck closed condition - no air flow
A flow restriction within the manifold

Individually depress each of the buttons 1-4 on the EN-46999: tester in order to activate each of the solenoid/valves. When activating each solenoid/valve, a loud click should be heard from the solenoid and an increased amount of air will exit the outlet ports. Button 1 will energize the solenoid/valve 1 for engine cylinder number 1. Button 2 will energize the solenoid/valve 2 for engine cylinder number 4. Button 3 will energize the solenoid/valve 3 for engine cylinder number 6. Button 4 will energize the solenoid/valve 4 for engine cylinder number 7.
Do not lift the manifold assembly by the electrical lead frame.
Install the EN-46999-1: adapter (1) to the manifold.
Install 2 of the manifold bolts (2) to the EN-46999-1: adapter. Tighten the bolts to 25 N.m (18 lb ft).
Connect the air out hose (2) of the EN-46999: tester (5) to the EN-46999-1: adapter (1). Verify the air supply switch (4) is in the off position.
Connect the air in hose (6) of the EN-46999: tester (5) to a shop air source.
Connect the 12-volt power supply connectors (7) of the EN-46999: tester (5) to a 12-volt power supply. Verify the Power light (8) on the tool is illuminated. If the light on the tool is not illuminated when connected to a 12-volt power supply, test and/or replace the 3-amp fuse.
Connect the EN-46999-5: harness power cable (3) to the electrical connector of the manifold.
Turn the air supply switch of the EN-46999: tester to the ON position. With the air supply connected to the manifold assembly and the solenoid/valves in the closed position, a limited amount of air will exit each of the bleed holes (3) and outlet ports (1, 2) of the manifold.
Position the manifold assembly onto a bench at a 45 degree angle in order to test solenoid/valves 1 and 4.
Depress button number 1 on the tool to activate solenoid/valve 1. With button 1 depressed, the solenoid/valve (1) should open, allowing an increased amount of air to exit the outlet ports (2) of the manifold.
Depress button number 4 on the tool to activate solenoid/valve 4. With button 4 depressed, the solenoid/valve (4) should open, allowing an increased amount of air to exit the outlet ports (3) of the manifold.
Reposition the manifold assembly onto a bench at a 45 degree angle in order to test solenoid/valves 2 and 3.
Depress button number 2 on the tool to activate solenoid/valve 2. With button 2 depressed, the solenoid/valve (2) should open, allowing an increased amount of air to exit the outlet ports (4) of the manifold.
Depress button number 3 on the tool to activate solenoid/valve 3. With button 3 depressed, the solenoid/valve (3) should open, allowing an increased amount of air to exit the outlet ports (1) of the manifold.
When the test is completed, turn the air source switch on the EN-46999: tester to the off position and disconnect the tool from the 12-volt power supply, shop air source and manifold assembly.
If after testing, it has been determined that one or more of the solenoid/valves is not functioning properly, replace the manifold as an assembly.
If after testing, it has been determined that the solenoid/valves are functioning properly, replace the valve lifters as required. Both intake and exhaust lifters should be replaced in pairs.

Camshaft Position Actuator and Solenoid Valve Diagnosis and Testing

Review the system operation in order to familiarize yourself with the system functions. As required, disable the auto-stop function prior to repair. Refer to «Hybrid Modes of Operation Description»(/cadillac/escalade/gmt900-2006-2014/remont/engine-control-systems/#hybrid-engine-controls-description-and-operation__hybrid-modes-of-operation-description) .
Measure the engine oil level. Fill, as required.
Using the scan tool, inspect for diagnostic codes within the engine control module (ECM). Refer to «Diagnostic System Check - Vehicle»(/cadillac/escalade/gmt900-2006-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) . Repair, as required.
Inspect the CMP actuator solenoid valve for proper operation. Refer to «Camshaft Position Actuator Solenoid Valve Inspection (Off-Vehicle)»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-repair-instructions-off-vehicle-1-of-3__camshaft-position-actuator-solenoid-valve-inspection) . If valve inspection confirms proper movement of the spool, replace the CMP actuator and CMP valve. If valve inspection confirms improper movement of the spool, replace only the CMP valve.
Verify proper operation of the CMP actuator control system. Refer to «Diagnostic System Check - Vehicle»(/cadillac/escalade/gmt900-2006-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) .

Oil Leak Diagnosis

Step	Action	Yes	No
IMPORTANT: You can repair most fluid leaks by first visually locating the leak, repairing or replacing the component, or by resealing the gasket surface. Once the leak is identified, determine the cause of the leak. Repair the cause of the leak as well as the leak itself. Review the system operation in order to familiarize yourself with the system functions. As required, disable the auto-stop function prior to repair. Refer to Hybrid Modes of Operation Description .
1	Review the system operation in order to familiarize yourself with the system functions. As required, disable the auto-stop function prior to repair. Refer to Hybrid Modes of Operation Description . Operate the vehicle until it reaches normal operating temperature. Park the vehicle on a level surface, over a large sheet of paper or other clean surface. Wait 15 minutes. Inspect for drippings. Are drippings present?	Go to Step 2	System OK
2	Can you identify the type of fluid and the approximate location of the leak?	Go to Step 10	Go to Step 3
3	Visually inspect the suspected area. Use a small mirror to assist in looking at hard to see areas. Inspect for leaks at the following locations: Sealing surfaces Fittings Cracked or damaged components Can you identify the type of fluid and the approximate location of the leak?	Go to Step 10	Go to Step 4
4	Completely clean the entire engine and surrounding components. Operate the vehicle for several kilometers, miles, at normal operating temperature and at varying speeds. Park the vehicle on a level surface, over a large sheet of paper or other clean surface. Wait 15 minutes. Identify the type of fluid, and the approximate location of the leak. Can you identify the type of fluid and the approximate location of the leak?	Go to Step 10	Go to Step 5
5	Visually inspect the suspected area. Use a small mirror to assist in looking at hard to see areas. Inspect for leaks at the following locations: Sealing surfaces Fittings Cracked or damaged components Can you identify the type of fluid and the approximate location of the leak?	Go to Step 10	Go to Step 6
6	Completely clean the entire engine and surrounding components. Apply an aerosol-type powder, baby powder, foot powder, etc., to the suspected area. Operate the vehicle for several kilometers, miles, at normal operating temperature and at varying speeds. Identify the type of fluid, and the approximate location of the leak, from the discolorations in the powder surface. Can you identify the type of fluid and the approximate location of the leak?	Go to Step 10	Go to Step 7
7	Visually inspect the suspected area. Use a small mirror to assist in looking at hard to see areas. Inspect for leaks at the following locations: Sealing surfaces Fittings Cracked or damaged components Can you identify the type of fluid and the approximate location of the leak?	Go to Step 10	Go to Step 8
8	Use the J 28428-E high-intensity black light kit in order to identify the type of fluid, and the approximate location of the leak. Refer to the manufacturer's instructions when using the tool. Can you identify the type of fluid and the approximate location of the leak?	Go to Step 10	Go to Step 9
9	Visually inspect the suspected area. Use a small mirror to assist in looking at hard to see areas. Inspect for leaks at the following locations: Sealing surfaces Fittings Cracked or damaged components Can you identify the type of fluid and the approximate location of the leak?	Go to Step 10	System OK
10	Inspect the engine for mechanical damage. Special attention should be shown to the following areas: Higher than recommended fluid levels Higher than recommended fluid pressures Plugged or malfunctioning fluid filters or pressure bypass valves Plugged or malfunctioning engine ventilation system Improperly tightened or damaged fasteners Cracked or porous components Improper sealants or gaskets, where required Improper sealant or gasket installation Damaged or worn gaskets or seals Damaged or worn sealing surfaces Inspect the engine for customer modifications. Is there mechanical damage, or customer modifications to the engine?	Go to Step 11	System OK
11	Repair or replace all damaged or modified components. Does the engine still leak oil?	Go to Step 1	System OK

IMPORTANT
You can repair most fluid leaks by first visually locating the leak, repairing or replacing the component, or by resealing the gasket surface. Once the leak is identified, determine the cause of the leak. Repair the cause of the leak as well as the leak itself.

Crankcase Ventilation System Inspection/Diagnosis

Symptom	Correction
External oil leak	Inspect for any of the following conditions: Restricted or kinked positive crankcase ventilation (PCV) hose or engine vent hose Damaged, incorrect, or incorrectly installed PCV hose Excessive crankcase pressure
Rough Idle	Inspect for any of the following conditions: Restricted or kinked PCV hose or engine vent hose Leaking (damaged) PCV hose Vacuum hoses worn or not properly installed
Stalling or slow idle speed	Inspect for any of the following conditions: Restricted or kinked engine vent hose Leaking (damaged) PCV hose
High idle speed	Inspect for a leaking (damaged) PCV hose
Sludge in the engine	Inspect for restricted or kinked PCV hose or engine vent hose

Diagnostic Aids

A chirping or squeal noise may be intermittent due to moisture on the drive belts or the pulleys. It may be necessary to spray a small amount of water on the drive belts in order to duplicate the customers concern. If spraying water on the drive belt duplicates the symptom, cleaning the belt pulleys may be the probable solution.
If the noise is intermittent, verify the accessory drive components by varying their loads making sure they are operated to their maximum capacity. Generator failing are suggested items to inspect.
A chirping, squeal or whine noise may be caused by a loose or improper installation of a body or suspension component. Other items of the vehicle may also cause the noise.
The drive belts will not cause a whine noise.

Test Description

The numbers below refer to the step numbers on the diagnostic table.

2: The noise may not be engine related. This step is to verify that the engine is making the noise. If the engine is not making the noise do not proceed further with this table.
3: The noise may be an internal engine noise. Removing the drive belts one at a time and operating the engine for a brief period will verify the noise is related to the drive belt. When removing the drive belt the water pump may not be operating and the engine may overheat. Also DTCs may set when the engine is operating with the drive belts removed.
4: Inspect all drive belt pulleys for pilling. Pilling is the small balls or pills or it can be strings in the drive belt grooves from the accumulation of rubber dust.
6: Misalignment of the pulleys may be caused from improper mounting of the accessory drive component, incorrect installation of the accessory drive component pulley, or the pulley bent inward or outward from a previous repair. Test for a misaligned pulley using a straight edge in the pulley grooves across two or three pulleys. If a misaligned pulley is found refer to that accessory drive component for the proper installation procedure for that pulley.
10: Inspecting of the fasteners can eliminate the possibility that a wrong bolt, nut, spacer, or washer was installed.
12: Inspecting the pulleys for being bent should include inspecting for a dent or other damage to the pulleys that would prevent the drive belt from not seating properly in all of the pulley grooves or on the smooth surface of a pulley when the back side of the belt is used to drive the pulley.
14: This test is to verify that the drive belt tensioner operates properly. If the drive belt tensioner is not operating properly, proper belt tension may not be achieved to keep the drive belt from slipping which could cause a squeal noise.
15: This test is to verify that the drive belt is not too long, which would prevent the drive belt tensioner from working properly. Also if an incorrect length drive belt was installed, it may not be routed properly and may be turning an accessory drive component in the wrong direction.
16: Misalignment of the pulleys may be caused from improper mounting of the accessory drive component, incorrect installation of the accessory drive component pulley, or the pulley bent inward or outward from a previous repair. Test for a misaligned pulley using a straight edge in the pulley grooves across two or three pulleys. If a misaligned pulley is found refer to that accessory drive component for the proper installation procedure for that pulley.
17: This test is to verify that the pulleys are the correct diameter or width. Using a known good vehicle compare the pulley sizes.
19: Replacing the drive belt when it is not damaged or there is not excessive pilling will only be a temporary repair.

Step	Action	Yes	No
CAUTION: Refer to Belt Dressing Caution . DEFINITION: The following items are indications of chirping: A high pitched noise that is heard once per revolution of the drive belt or a pulley. Chirping may occur on cold damp start-ups and will subside once the vehicle reaches normal operating temp. DEFINITION: The following items are indications of drive belt squeal: A loud screeching noise that is caused by a slipping drive belt. This is unusual for a drive belt with multiple ribs. The noise occurs when a heavy load is applied to the drive belt, such as an air conditioning compressor engagement snapping the throttle, or slipping on a seized pulley or a faulty accessory drive component. DEFINITION: The following items are indications of drive belt whine: A high pitched continuous noise. The noise may be caused by an accessory drive component failed bearing.
1	Did you review the Drive Belt Symptom operation and perform the necessary inspections?	Go to Step 2	Go to Symptoms - Engine Mechanical
2	Verify that there is a chirping, squeal or whine noise. Does the engine make the chirping squeal or whine noise?	Go to Step 3	Go to Diagnostic Aids
3	Remove the drive belt. Operate the engine for no longer than 30-40 seconds. Does the chirping, squeal or whine noise still exist?	Go to Symptoms - Engine Mechanical	Go to Step 4
4	If diagnosing a chirping noise, inspect for severe pilling exceeding 1/3 of the belt groove depth. If diagnosing a squeal or whine noise, proceed to step 13. Do the belt grooves have pilling?	Go to Step 5	Go to Step 6
5	Clean the drive belt pulleys with a suitable wire brush. Did you complete the repair?	Go to Step 20	Go to Step 6
6	Inspect for misalignment of the pulleys. Are any of the pulleys misaligned?	Go to Step 7	Go to Step 8
7	Replace or repair any misaligned pulleys. Did you complete the repair?	Go to Step 20	Go to Step 8
8	Inspect for bent or cracked brackets. Did you find any bent or cracked brackets?	Go to Step 9	Go to Step 10
9	Replace any bent or cracked brackets. Did you complete the repair?	Go to Step 20	Go to Step 10
10	Inspect for improper, loose or missing fasteners. Did you find the condition?	Go to Step 11	Go to Step 12
11	CAUTION: Refer to Fastener Caution . Tighten any loose fasteners. Refer to Fastener Tightening Specifications . Replace any improper or missing fasteners. Did you complete the repair?	Go to Step 20	Go to Step 12
12	Inspect for a bent pulley. Did you find the condition?	Go to Step 18	Go to Step 13
13	Inspect for an accessory drive component seized bearing or a faulty accessory drive component. If diagnosing a whine noise and the condition still exist, proceed to Diagnostic Aids. Did you find and correct the condition?	Go to Step 20	Go to Step 14
14	Test the drive belt tensioner for proper operation. Refer to Drive Belt Tensioner Diagnosis . Did you find and correct the condition?	Go to Step 20	Go to Step 15
15	Inspect for the correct drive belt length. Did you find and correct the condition?	Go to Step 20	Go to Step 16
16	Inspect for misalignment of a pulley. Did you find and correct the condition?	Go to Step 20	Go to Step 17
17	Inspect for the correct pulley size. Did you find and correct the condition?	Go to Step 20	Go to Diagnostic Aids
18	Replace the bent pulley. Did you complete the repair?	Go to Step 20	Go to Step 19
19	Replace the drive belt. Refer to Drive Belt Replacement . Did you complete the repair?	Go to Step 20	Go to Diagnostic Aids
20	Operate the system in order to verify the repair. Did you correct the condition?	System OK	Go to Step 3

CAUTION
Refer to Belt Dressing Caution .

CAUTION
Refer to Fastener Caution .

The accessory drive components can have an affect on engine vibration. Vibration from the engine operating may cause a body component or another part of the vehicle to make rumbling noise. Vibration can be caused by, but not limited to an extra load on the generator. To help identify an intermittent or an improper condition, vary the loads on the accessory drive components.

The drive belt may have a rumbling condition that can not be seen or felt. Sometimes replacing the drive belt may be the only repair for the symptom.

If replacing the drive belt, completing the diagnostic table, and the noise is only heard when the drive belts are installed, there might be an accessory drive component with a failure. Varying the load on the different accessory drive components may aid in identifying which component is causing the rumbling noise.

The numbers below refer to the step numbers on the diagnostic table.

2: This test is to verify that the symptom is present during diagnosing. Other vehicle components may cause a similar symptom.
3: This test is to verify that one of the drive belts is causing the rumbling noise or vibration. Rumbling noise may be confused with an internal engine noise due to the similarity in the description. When removing the drive belt the water pump may not be operating and the engine may overheat. Also DTCs may set when the engine is operating with the drive belt removed.
4: Inspecting the drive belt is to ensure that they are not causing the noise. Small cracks across the ribs of the drive belt will not cause the noise. Belt separation is identified by the plys of the belt separating and may be seen at the edge of the belt or felt as a lump in the belt.
5: Small amounts of pilling is normal condition and acceptable. When the pilling is severe the drive belt does not have a smooth surface for proper operation.
9: Inspecting of the fasteners can eliminate the possibility that the wrong bolt, nut, spacer, or washer was installed.
11: Inspect the water pump shaft for being bent. Also inspect the water pump bearings for smooth operation and excessive play. Compare the water pump with a known good water pump.
12: Accessory drive component brackets that are bent, cracked, or loose may put extra strain on that accessory component causing it to vibrate.

Step	Action	Yes	No
CAUTION: Refer to Belt Dressing Caution . DEFINITION: The following items are indications of drive belt rumbling: A low pitch tapping, knocking, or thumping noise heard at or just above idle. Heard once per revolution of the drive belt or a pulley. Rumbling may be caused from: Pilling, the accumulation of rubber dust that forms small balls (pills) or strings in the drive belt pulley groove The separation of the drive belt A damaged drive belt DEFINITION: The following items are indications of drive belt vibration: The vibration is engine-speed related. The vibration may be sensitive to accessory load.
1	Did you review the Drive Belt Symptom operation and perform the necessary inspections?	Go to Step 2	Go to Symptoms - Engine Mechanical
2	Verify that there is a rumbling noise or that the vibration is engine related. Does the engine make the rumbling noise or vibration?	Go to Step 3	Go to Diagnostic Aids
3	Remove the drive belt. Operate the engine for no longer than 30-40 seconds. Does the rumbling or vibration still exist?	Go to Symptoms - Engine Mechanical or Vibration Analysis - Engine	Go to Step 4
4	Inspect the drive belt for wear, damage, separation, sections of missing ribs, and debris build-up. Did you find any of these conditions?	Go to Step 7	Go to Step 5
5	Inspect for severe pilling of more than 1/3 of the drive belt pulley grooves. Did you find severe pilling?	Go to Step 6	Go to Step 7
6	Clean the drive belt pulleys using a suitable wire brush. Reinstall the drive belt. Refer to Drive Belt Replacement . Did you correct the condition?	Go to Step 8	Go to Step 7
7	Install a new drive belt. Refer to Drive Belt Replacement . Did you complete the replacement?	Go to Step 8	Go to Step 9
8	Operate the system in order to verify the repair. Did you correct the condition?	System OK	Go to Step 9
9	Inspect for improper, loose or missing fasteners. Did you find any of these conditions?	Go to Step 10	Go to Step 11
10	CAUTION: Refer to Fastener Caution . Tighten any loose fasteners. Refer to Fastener Tightening Specifications . Replace improper or missing fasteners. Did you complete the repair?	Go to Step 13	Go to Step 11
11	Inspect for a bent water pump shaft. Refer to Water Pump Replacement . Did you find and correct the condition?	Go to Step 13	Go to Step 12
12	Inspect for bent or cracked brackets. Did you find and correct the condition?	Go to Step 13	Go to Diagnostic Aids
13	Operate the system in order to verify the repair. Did you correct the condition?	System OK	Go to Step 3

CAUTION
Refer to Belt Dressing Caution .

CAUTION
Refer to Fastener Caution .

If the drive belt repeatedly falls off the drive belt pulleys, this is because of pulley misalignment.

An extra load that is quickly applied on released by an accessory drive component may cause the drive belt to fall off the pulleys. Verify the accessory drive components operate properly.

If the drive belt is the incorrect length, the drive belt tensioner may not keep the proper tension on the drive belt.

Excessive wear on a drive belt is usually caused by an incorrect installation or the wrong drive belt for the application.

Minor misalignment of the drive belt pulleys will not cause excessive wear, but will probably cause the drive belt to make a noise or to fall off.

Excessive misalignment of the drive belt pulleys will cause excessive wear but may also make the drive belt fall off.

The numbers below refer to the step numbers on the diagnostic table.

2: This inspection is to verify the condition of the drive belt. Damage may of occurred to the drive belt when the drive belt fell off. The drive belt may of been damaged, which caused the drive belt to fall off. Inspect the belt for cuts, tears, sections of ribs missing, or damaged belt plys.
4: Misalignment of the pulleys may be caused from improper mounting of the accessory drive component, incorrect installation of the accessory drive component pulley, or the pulley bent inward or outward from a previous repair. Test for a misaligned pulley using a straight edge in the pulley grooves across two or three pulleys. If a misaligned pulley is found refer to that accessory drive component for the proper installation procedure of that pulley.
5: Inspecting the pulleys for being bent should include inspecting for a dent or other damage to the pulleys that would prevent the drive belt from not seating properly in all of the pulley grooves or on the smooth surface of a pulley when the back side of the belt is used to drive the pulley.
6: Accessory drive component brackets that are bent or cracked will let the drive belt fall off.
7: Inspection of the fasteners can eliminate the possibility that a wrong bolt, nut, spacer, or washer was installed. Missing, loose, or the wrong fasteners may cause pulley misalignment from the bracket moving under load. Over tightening of the fasteners may cause misalignment of the accessory component bracket.
13: The inspection is to verify the drive belt is correctly installed on all of the drive belt pulleys. Wear on the drive belt may be caused by mis-positioning the drive belt by one groove on a pulley.
14: The installation of a drive belt that is too wide or too narrow will cause wear on the drive belt. The drive belt ribs should match all of the grooves on all of the pulleys.
15: This inspection is to verify the drive belt is not contacting any parts of the engine or body while the engine is operating. There should be sufficient clearance when the drive belt accessory drive components load varies. The drive belt should not come in contact with an engine or a body component when snapping the throttle.

Step	Action	Yes	No
CAUTION: Refer to Belt Dressing Caution . DEFINITION: The drive belt falls off the pulleys or may not ride correctly on the pulleys.DEFINITION: Wear at the outside ribs of the drive belt due to an incorrectly installed drive belt.
1	Did you review the Drive Belt Symptom operation and perform the necessary inspections?	Go to Step 2	Go to Symptoms - Engine Mechanical
2	If diagnosing excessive wear, proceed to step 13. If diagnosing a drive belt that falls off, inspect for a damaged drive belt. Did you find the condition?	Go to Step 3	Go to Step 4
3	Install a new drive belt. Refer to Drive Belt Replacement . Does the drive belt continue to fall off?	Go to Step 4	System OK
4	Inspect for misalignment of the pulleys. Did you find and repair the condition?	Go to Step 12	Go to Step 5
5	Inspect for a bent or dented pulley. Did you find and repair the condition?	Go to Step 12	Go to Step 6
6	Inspect for a bent or a cracked bracket. Did you find and repair the condition?	Go to Step 12	Go to Step 7
7	Inspect for improper, loose or missing fasteners. Did you find loose or missing fasteners?	Go to Step 8	Go to Step 9
8	CAUTION: Refer to Fastener Caution . Tighten any loose fasteners. Refer to Fastener Tightening Specifications . Replace improper or missing fasteners. Does the drive belt continue to fall off?	Go to Step 9	System OK
9	Test the drive belt tensioner for operating correctly. Refer to Drive Belt Tensioner Diagnosis . Does the drive belt tensioner operate correctly?	Go to Step 11	Go to Step 10
10	Replace the drive belt tensioner. Refer to Drive Belt Tensioner Replacement . Does the drive belt continue to fall off?	Go to Step 11	System OK
11	Inspect for failed drive belt idler and drive belt tensioner pulley bearings. Did you find and repair the condition?	Go to Step 12	Go to Diagnostic Aids
12	Operate the system in order to verify the repair. Did you correct the condition?	System OK	Go to Step 13
13	Inspect the drive belt for the proper installation. Refer to Drive Belt Replacement . Did you find this condition?	Go to Step 16	Go to Step 14
14	Inspect for the proper drive belt. Did you find this condition?	Go to Step 16	Go to Step 15
15	Inspect for the drive belt rubbing against a bracket, hose, or wiring harness. Did you find and repair the condition?	Go to Step 17	Go to Diagnostic Aids
16	Replace the drive belt. Refer to Drive Belt Replacement . Did you complete the replacement?	Go to Step 17
17	Operate the system in order to verify the repair. Did you correct the condition?	System OK

CAUTION
Refer to Belt Dressing Caution .

CAUTION
Refer to Fastener Caution .

Drive Belt Tensioner Diagnosis

Step	Action	Yes	No
1	Remove the drive belt. Refer to Drive Belt Replacement . Inspect the drive belt tensioner pulley. Is the drive belt tensioner pulley loose or misaligned?	Go to Step 4	Go to Step 2
2	Rotate the drive belt tensioner. Does the tensioner rotate without any unusual resistance or binding?	Go to Step 3	Go to Step 4
3	Use a torque wrench in order to measure the torque required to move the tensioner off of the stop. Use a torque wrench on a known good tensioner in order to measure the torque required to move the tensioner off of the stop. Is the first torque reading within 10 percent of the second torque reading?	System OK	Go to Step 4
4	Replace the drive belt tensioner. Refer to Drive Belt Tensioner Replacement . Is the repair complete?	System OK

Removal Procedure

Remove the air cleaner resonator outlet duct. Refer to «Air Cleaner Resonator Outlet Duct Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-hybrid-hp2-60l-lz1-repair-instructions) .
Install a breaker bar with hex-head socket to the drive belt tensioner bolt.
Rotate the drive belt tensioner clockwise in order to relieve tension on the belt.
Remove the belt (1) from the pulleys and the drive belt tensioner (2).
Slowly release the tension on the drive belt tensioner.
Remove the breaker bar and socket from the drive belt tensioner bolt.
Clean and inspect the belt surfaces of all the pulleys.

Installation Procedure

Route the drive belt (1) around all the pulleys except the idler pulley.
Install the breaker bar with hex-head socket to the belt tensioner bolt.
Rotate the belt tensioner (2) clockwise in order to relieve the tension on the tensioner.
Install the drive belt under the idler pulley.
Slowly release the tension on the belt tensioner.
Remove the breaker bar and socket from the belt tensioner bolt.
Inspect the drive belt for proper installation and alignment.
Install the air cleaner resonator outlet duct. Refer to «Air Cleaner Resonator Outlet Duct Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-hybrid-hp2-60l-lz1-repair-instructions) .

Remove the accessory drive belt. Refer to «Drive Belt Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) .
Loosen the drive belt idler pulley bolt (1).
Remove the drive belt idler pulley (2) and bolt.

Install the drive belt idler pulley (2) and bolt to the generator bracket. Snug the bolt finger tight.
Tighten the drive belt idler pulley bolt (1). Tighten: Tighten the bolt to 50 N.m (37 lb ft).
Install the drive belt. Refer to «Drive Belt Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) .

Remove the drive belt. Refer to «Drive Belt Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) .
Remove the drive belt tensioner bolts (1).
Remove the drive belt tensioner (2).

Install the drive belt tensioner (2).
Install the drive belt tensioner bolts (1).
Tighten the drive belt tensioner bolts. Tighten: Tighten the bolts to 50 N.m (37 lb ft).
Install the drive belt. Refer to «Drive Belt Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) .

Engine Mount Inspection

CAUTION

Broken or deteriorated mounts can cause misalignment and destruction of certain drive train components. When a single mount breaks, the remaining mounts are subjected to abnormally high stresses.

CAUTION

When raising or supporting the engine for any reason, do not use a jack under the oil pan, any sheet metal, or the crankshaft pulley. Due to the small clearance between the oil pan and the oil pump screen, jacking against the oil pan may cause the pan to be bent against the pump screen. This will result in a damaged oil pickup unit.

Measure the engine movement at the engine mount in order to check for damage to the rubber portions of the mount. Apply the park brake. Start the engine. Firmly apply and hold the primary brakes. Have an assistant stand to the side of the vehicle in order to observe for engine movement. Slightly load the engine shifting from drive to reverse a few times. If the engine moves more than 24 mm (0.945 in) from the at rest position, in either direction, check for loose engine mount bolts.
If the engine mount bolt torque is within specifications, check the condition of the engine mount.
Replace the engine mount if any of the following conditions exist: Heat check cracks cover the rubber cushion surface. The rubber cushion is separated from the metal plate of the mount. There is a split through the rubber cushion.

CAUTION

Remove the air cleaner outlet duct. Refer to «Air Cleaner Resonator Outlet Duct Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
Lower the vehicle.
Remove the engine mount to frame bolts (1).
Raise and support the vehicle halfway. Refer to «Lifting and Jacking the Vehicle»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#general-information__lifting-and-jacking-the-vehicle) .
Remove the left wheelhouse liner. Refer to «Front Wheelhouse Liner Replacement - Left Side»(/cadillac/escalade/gmt900-2006-2014/remont/frames-subframes-crossmembers/#frame-and-underbody__front-wheelhouse-liner-replacement-left) .
Place an adjustable (screw type) jack to the tab (1) located on the engine block.
Working through the wheelhouse opening, remove the engine mount to engine bolts (1).
Using the adjustable jack, raise the engine slightly until there is enough clearance to remove the engine mount.
Remove the engine mount.

Position the engine mount to the engine.
Working through the wheelhouse opening, install the engine mount to engine bolts (1). Tighten: Tighten the bolts to 50 N.m (37 lb ft).
Using the adjustable jack, lower the engine until the engine mount is sitting flush on the frame.
Remove the adjustable jack from the engine block.
Install the left wheelhouse liner. Refer to «Front Wheelhouse Liner Replacement - Left Side»(/cadillac/escalade/gmt900-2006-2014/remont/frames-subframes-crossmembers/#frame-and-underbody__front-wheelhouse-liner-replacement-left) .
Lower the vehicle.
Install the engine mount to frame bolts (1). Tighten: Tighten the bolts to 65 N.m (48 lb ft) starting with the middle bolt then either side bolt.
Lower the vehicle.
Install the air cleaner outlet duct. Refer to «Air Cleaner Resonator Outlet Duct Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .

CAUTION

Remove the air cleaner outlet duct. Refer to «Air Cleaner Resonator Outlet Duct Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
If the vehicle is equipped with four wheel drive (4WD), remove the front drive axle. Refer to «Differential Carrier Assembly Replacement (9.25 inch)»(/cadillac/escalade/gmt900-2006-2014/remont/differentials-drive-axles/#front-drive-axle) or «Differential Carrier Assembly Replacement (8.25 inch)»(/cadillac/escalade/gmt900-2006-2014/remont/differentials-drive-axles/#front-drive-axle) .
If the vehicle is equipped with 4WD, remove the front drive axle bracket bolts and bracket.
Remove the exhaust manifold. Refer to «Exhaust Manifold Replacement - Right Side»(/cadillac/escalade/gmt900-2006-2014/remont/exhaust/#engine-exhaust-system) .
Remove the air conditioning (A/C) compressor bracket. Refer to «Air Conditioning Compressor Bracket Replacement (HP2)»(/cadillac/escalade/gmt900-2006-2014/remont/automatic-hvac-system/#heating-ventilation-and-air-conditioning) .
Remove the engine mount to frame bolts (1).
Place an adjustable (screw type) jack to the tab (1) located on the engine block.
Working through the wheelhouse opening, remove the engine mount to engine bolts (1).
Using the adjustable jack, raise the engine slightly until there is enough clearance to remove the engine mount.
Remove the engine mount.

Position the engine mount to the engine.
Working through the wheelhouse opening, install the engine mount to engine bolts (1). Tighten: Tighten the bolts to 50 N.m (37 lb ft).
Using the adjustable jack, lower the engine until the engine mount is sitting flush on the frame.
Remove the adjustable jack from the engine block.
Install the engine mount to frame bolts (1). Tighten: Tighten the bolts to 65 N.m (48 lb ft) starting with the middle bolt then either side bolt.
Install the A/C compressor bracket. Refer to «Air Conditioning Compressor Bracket Replacement (HP2)»(/cadillac/escalade/gmt900-2006-2014/remont/automatic-hvac-system/#heating-ventilation-and-air-conditioning) .
If the vehicle is equipped with 4WD, Install the front drive axle bracket and bolts. Tighten: Tighten the bolts to 90 N.m (67 lb ft).
If the vehicle is equipped with 4WD, Install the front drive axle. Refer to «Differential Carrier Assembly Replacement (9.25 inch)»(/cadillac/escalade/gmt900-2006-2014/remont/differentials-drive-axles/#front-drive-axle) or «Differential Carrier Assembly Replacement (8.25 inch)»(/cadillac/escalade/gmt900-2006-2014/remont/differentials-drive-axles/#front-drive-axle) .
Install the exhaust manifold. Refer to «Exhaust Manifold Replacement - Right Side»(/cadillac/escalade/gmt900-2006-2014/remont/exhaust/#engine-exhaust-system) .

Open the hood.
Grasp the front of the intake manifold sight shield and lift up disengaging the grommets from the studs.
Remove the intake manifold sight shield from the retainer slots.
Remove the intake manifold sight shield retainer bolts and retainer, if required.

Position the intake manifold sight shield on top of the intake manifold, aligning the holes, if required.
Install the intake manifold sight shield retainer bolts, if required. Tighten: Tighten the bolts to 5 N.m (44 lb in).
Install the intake manifold sight shield tabs into the slots in the retainer.
Align the intake manifold sight shield grommets with the studs.
Gently push down on the intake manifold sight shield over the grommets, seating the intake manifold sight shield.
Close the hood.

Remove the intake manifold sight shield. Refer to «Upper Intake Manifold Sight Shield Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-repair-instructions-on-vehicle) .
Remove the positive crankcase ventilation (PCV) dirty air hose from the intake manifold fitting and left valve rocker arm cover, if required.
Remove the PCV fresh air tube (1) from the air cleaner outlet duct, if required.
Remove the PCV fresh air tube (1) from the right valve rocker arm cover fitting (2), if required.
Remove the appropriate PCV hose/tube from the vehicle.

Install the appropriate PCV hose/tube to the vehicle.
Install the PCV fresh air tube (1) to the right valve rocker arm cover fitting (2), if required.
Install the PCV fresh air tube (1) to the air cleaner outlet duct, if required.
Install the PCV dirty air hose to the intake manifold fitting and left valve rocker arm cover, if required.
Install the intake manifold sight shield. Refer to «Upper Intake Manifold Sight Shield Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-repair-instructions-on-vehicle) .

Perform the High Voltage Service disconnect. Refer to «High Voltage Disabling»(/cadillac/escalade/gmt900-2006-2014/remont/charging-system/#hybrid-energy-storage-system__high-voltage-disabling) .
Disconnect the battery ground cable. Refer to «Battery Negative Cable Disconnection and Connection»(/cadillac/escalade/gmt900-2006-2014/remont/charging-system/#battery-charging-system-and-starting-system) .
Remove the air cleaner outlet duct. Refer to «Air Cleaner Resonator Outlet Duct Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
Remove the engine harness retainer nut (1).
Remove the engine harness retainer from the stud and locator pin.
Disconnect the engine harness electrical connector (2) from the evaporative emission (EVAP) canister purge solenoid.
Disconnect the engine wiring harness electrical connector (3) from the manifold absolute pressure (MAP) sensor.
Remove the connector position assurance (CPA) retainer (1).
Disconnect the engine harness electrical connector (2) from the ignition coil harness electrical connector.
Disconnect the engine harness electrical connectors (3) from the left side fuel injectors.
Remove the engine harness clip (4) from the ignition coil bracket stud.
Remove the CPA retainer (1).
Disconnect the engine harness electrical connector (2) from the ignition coil harness electrical connector.
Disconnect the engine harness electrical connector (3) from the throttle actuator.
Remove the engine harness clip (4) from the ignition coil bracket stud.
Disconnect the engine harness electrical connectors (5) from the right side fuel injectors.
Remove the engine harness clip (1) bolt (3).
Disconnect the engine harness electrical connector (2) from the engine coolant temperature (ECT) sensor.
Disconnect the generator control module electrical connector.
Gather the engine harness branches and tie the harness up out of the way to the cowl panel.
Disconnect the EVAP canister purge tube (1) quick connect fitting from the EVAP canister purge solenoid. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
Disconnect the fuel feed line quick connect fitting (2) from the fuel rail. Refer to «Metal Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
Remove the positive crankcase ventilation (PCV) hose from the intake manifold fitting.
Position the hose out of the way.
Loosen the intake manifold bolts (512).
Remove the intake manifold (500).
Cover the cylinder head passages in order to prevent dirt or debris from entering the passages.
Remove and discard the intake manifold gaskets (514).
Clean and inspect the intake manifold. Refer to «Intake Manifold Cleaning and Inspection»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) .
Remove the upper intake manifold cover nut.
Remove the upper intake manifold cover.
Remove the manifold absolute pressure (MAP) sensor retainer.
Remove the MAP sensor and discard the MAP sensor seal.
Disconnect the EVAP tube quick connect fitting at the intake manifold. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
Disengage the retainer securing the EVAP canister purge solenoid to the fuel rail.
Remove the EVAP tube and purge solenoid.
Remove the throttle body bolts/nuts.
Remove the throttle body.
Remove and discard the throttle body gasket.
Remove the fuel rail bolts.
Remove the fuel rail.
Remove and discard the fuel injector lower O-ring seals.

Install NEW fuel injector lower O-ring seals onto the injectors.
Lubricate the NEW O-ring seals with clean engine oil.
Install the fuel rail.
Install the fuel rail bolts. Tighten: Tighten the bolts to 10 N.m (89 lb in).
Install a NEW throttle body gasket to the intake manifold.
Install the throttle body.
Install the throttle body bolts/nuts. Tighten: Tighten the bolts/nuts to 10 N.m (89 lb in).
Install the EVAP tube and purge solenoid.
Install the EVAP canister purge solenoid to the fuel rail bracket and engage the retainer.
Connect the EVAP tube quick connect fitting at the intake manifold. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
Lubricate the MAP sensor seal with clean engine oil.
Install the MAP sensor with a new seal.
Install the MAP sensor retainer.
Install the upper intake manifold cover.
Install the upper intake manifold cover nut until snug.
Install NEW intake manifold gaskets (514) to the intake manifold.
Remove the covers from the cylinder head passages.
Install the intake manifold (500).
Apply a 5 mm (0.20 in) band of threadlock GM P/N 12345382 (Canadian P/N 10953489) to the threads of the intake manifold bolts (512). Refer to «Adhesives, Fluids, Lubricants, and Sealers»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-specifications__adhesives-fluids-lubricants-and-sealers) .
Install the intake manifold bolts (512) finger tight.
Tighten the intake manifold bolts to specifications. Tighten: Tighten the bolts a first pass in the sequence shown to 5 N.m (44 lb in). Tighten the bolts a final pass in the sequence shown to 10 N.m (89 lb in).
Position and install the PCV hose to the intake manifold fitting.
Connect the fuel feed line quick connect fitting (2) to the fuel rail. Refer to «Metal Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
Connect the EVAP canister purge tube (1) quick connect fitting to the EVAP canister purge solenoid. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
Untie the engine harness branches from the cowl panel and position over the engine.
Connect the engine harness electrical connector (2) to the ECT sensor.
Position the engine harness clip (1) to the generator bracket and install the bolt (3). Tighten: Tighten the bolt to 9 N.m (80 lb in).
Connect the generator control module electrical connector.
Connect the engine harness electrical connectors (5) to the right side fuel injectors.
Install the engine harness clip (4) to the ignition coil bracket stud.
Connect the engine harness electrical connector (3) to the throttle actuator.
Connect the engine harness electrical connector (2) to the ignition coil harness electrical connector.
Install the CPA retainer (1).
Install the engine harness clip (4) to the ignition coil bracket stud.
Connect the engine harness electrical connectors (3) to the left side fuel injectors.
Connect the engine harness electrical connector (2) to the ignition coil harness electrical connector.
Install the CPA retainer (1).
Connect the engine wiring harness electrical connector (3) to the MAP sensor.
Connect the engine harness electrical connector (2) to the EVAP canister purge solenoid.
Install the engine harness retainer to the stud and locator pin.
Install the engine harness retainer nut (1). Tighten: Tighten the nut to 5 N.m (44 lb in).
Install the air cleaner outlet duct. Refer to «Air Cleaner Resonator Outlet Duct Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
Connect the battery ground cable. Refer to «Battery Negative Cable Disconnection and Connection»(/cadillac/escalade/gmt900-2006-2014/remont/charging-system/#battery-charging-system-and-starting-system) .
Perform the High Voltage Service connect. Refer to «High Voltage Enabling»(/cadillac/escalade/gmt900-2006-2014/remont/charging-system/#hybrid-energy-storage-system__high-voltage-enabling) .

Remove the intake manifold. Refer to «Intake Manifold Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) .
Reposition the brake booster vacuum hose clamp at the intake manifold.
Remove the brake booster vacuum hose from the intake manifold nipple.
Remove the upper intake manifold cover nut.
Remove the upper intake manifold cover.

Install the upper intake manifold cover.
Install the upper intake manifold cover nut until snug
Install the brake booster vacuum hose to the intake manifold nipple.
Position the brake booster vacuum hose clamp at the intake manifold.
Install the intake manifold. Refer to «Intake Manifold Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) .

Remove the intake manifold. Refer to «Intake Manifold Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) .
Disconnect the engine harness electrical connector (1) from the oil pressure sensor.
DO NOT lift the valve lifter oil manifold by the electrical lead frame.
Remove the valve lifter oil manifold bolts (2).
Remove the valve lifter oil manifold (1).
Identify the 8 gasket retaining strap locations (1-8).
Using a cutter type tool, cut the 8 retaining straps.
Remove the outer gasket (1) from the valve lifter oil manifold.

Note. All gasket surfaces should be free of oil or other foreign material during assembly.

Place the service gasket (1) onto the valve lifter oil manifold.
Install the valve lifter oil manifold (1) to the engine.
Install the valve lifter oil manifold bolts (2). Tighten: Tighten the bolts to 25 N.m (18 lb ft).
Connect the engine harness electrical connector (1) to the oil pressure sensor.
Install the intake manifold. Refer to «Intake Manifold Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) .

Remove the intake manifold. Refer to «Intake Manifold Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) .
Disconnect the engine harness electrical connector (1) from the oil pressure sensor.
Remove the oil pressure sensor (1) and washer (2).
Remove and discard the valve lifter oil filter (3).
Remove and discard the valve lifter oil filter O-ring seal (4).

Install a NEW valve lifter oil filter O-ring seal (4) into the valve lifter oil manifold.
Install the NEW valve lifter oil filter (3).
Apply sealant GM P/N 12346004 (Canadian P/N 10953480) or equivalent to the threads of the oil pressure sensor.
Install the oil pressure sensor washer (2) and sensor (1). Tighten: Tighten the sensor to 35 N.m (26 lb ft).
Connect the engine harness electrical connector (1) to the oil pressure sensor.
Install the intake manifold. Refer to «Intake Manifold Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) .

Remove the intake manifold cover. Refer to «Upper Intake Manifold Sight Shield Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-repair-instructions-on-vehicle) .
Remove the connector position assurance (CPA) retainer (2).
Disconnect the engine harness electrical connector (1) from the ignition coil wire harness.
Remove two engine harness clips (3) from the ignition coil bracket studs.
Reposition the engine harness, as necessary.
Remove the spark plug wires (724) from the ignition coils. Twist each plug wire 1/2 turn. Pull only on the boot in order to remove the wire from the ignition coil.
Remove the ignition coil bracket studs (720).
Remove the ignition coil bracket (719).
Remove the positive crankcase ventilation (PCV) hose.
Loosen the valve rocker arm cover bolts.
Remove the valve rocker arm cover.
Remove and discard the old gasket (1).

Note. All gasket surfaces should be free of oil an/or other foreign material during assembly. DO NOT reuse the valve rocker arm cover gasket. If the PCV valve grommet has been removed from the rocker cover, install a NEW grommet during assembly.

Install a NEW rocker cover gasket (1).
Install the valve rocker arm cover.
Tighten the rocker arm cover bolts. Tighten: Tighten the bolts to 12 N.m (106 lb in).
Install the PCV hose.
Apply threadlock to the threads of the ignition coil bracket studs. Refer to «Adhesives, Fluids, Lubricants, and Sealers»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-specifications__adhesives-fluids-lubricants-and-sealers) .
Position the ignition coil bracket (719) onto the rocker cover.
Install the ignition coil bracket studs (720). Tighten: Tighten the studs to 12 N.m (106 lb in).
Install the spark plug wires (724) to the ignition coils.
Position the engine harness, as necessary.
Install two engine harness clips (3) to the ignition coil bracket studs.
Connect the engine harness electrical connector (1) to the ignition coil wire harness.
Install the CPA retainer (2).
Install the intake manifold cover. Refer to «Upper Intake Manifold Sight Shield Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-repair-instructions-on-vehicle) .

Disable the high voltage system. Refer to «High Voltage Disabling»(/cadillac/escalade/gmt900-2006-2014/remont/charging-system/#hybrid-energy-storage-system__high-voltage-disabling) .
Remove the intake manifold cover. Refer to «Upper Intake Manifold Sight Shield Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-repair-instructions-on-vehicle) .
Remove the generator control module 3 phase cable clip nut (1).
Remove the generator control module 3 phase cable clip from the engine bracket (2).
Reposition the generator control module 3 phase cables out of the way.
Remove the connector position assurance (CPA) retainer (2).
Disconnect the engine harness electrical connector (1) from the ignition coil wire harness.
Remove the engine wiring harness (electronic throttle control branch) clip (6) from the ignition coil bracket stud.
Reposition the engine wiring harness (electronic throttle control branch) as necessary.
Remove the heater inlet hose (2) from the heater hose bracket (3).
Remove the surge tank outlet hose (2) from the heater hose bracket (3).
Remove the heater hose bracket nut (1) and bracket (2).
Remove the spark plug wires (724) from the ignition coils. Twist each plug wire 1/2 turn. Pull only on the boot in order to remove the wire from the ignition coil.
Remove the ignition coil bracket studs (720).
Remove the ignition coil bracket (719).
Remove the positive crankcase ventilation (PCV) tube (1) from the valve rocker cover (2).
Loosen the valve rocker arm cover bolts.
Remove the valve rocker arm cover.
Remove and discard the old gasket (1).
Remove the oil fill cap (424) from the oil fill tube (423), if necessary.
Remove and discard the oil fill tube, if necessary.

Note. All gasket surfaces should be free of oil or other foreign material during assembly. DO NOT reuse the valve rocker arm cover gasket. If the oil fill tube has been removed from the rocker arm cover, install a NEW fill tube during assembly.

Lubricate the O-ring seal (422) of the NEW oil fill tube with clean engine oil.
Insert the NEW oil fill tube (423) into the rocker arm cover. Rotate the tube clockwise until locked in the proper position.
Install the oil fill cap (424) into the tube. Rotate the cap clockwise until locked in the proper position.
Install a NEW rocker cover gasket (1) into the valve rocker arm cover lip.
Install the valve rocker arm cover.
Tighten the rocker arm cover bolts. Tighten: Tighten the bolts to 12 N.m (106 lb in).
Install the PCV tube (1) to the valve rocker cover (2).
Apply threadlock GM P/N 12345382 (Canadian P/N 10953489), or equivalent to the threads of the ignition coil bracket studs.
Position the ignition coil bracket (719) onto the rocker cover.
Install the ignition coil bracket studs (720). Tighten: Tighten the studs to 12 N.m (106 lb in).
Install the spark plug wires (724) to the ignition coils.
Install the heater hose bracket (2) and nut (1). Tighten: Tighten the nut to 9 N.m (80 lb in).
Install the surge tank outlet hose (2) to the heater hose bracket (3).
Install the heater inlet hose (2) to the heater hose bracket (3).
Position the generator battery cable as necessary.
Install the generator battery cable clip (1) to the ignition coil bracket stud.
Position the engine wiring harness (electronic throttle control branch) as necessary.
Install the engine wiring harness (electronic throttle control branch) clip to the ignition coil bracket stud.
Connect the engine harness electrical connector (1) to the ignition coil wire harness.
Install the CPA retainer (2).
Position the generator control module 3 phase cables to the bracket channel.
Install the generator control module 3 phase cable clip to the tab (3) on the engine bracket (2).
Install the generator control module 3 phase cable clip nut (1). Tighten: Tighten the nut to 9 N.m (80 lb in).
Enable the high voltage system. Refer to «High Voltage Enabling»(/cadillac/escalade/gmt900-2006-2014/remont/charging-system/#hybrid-energy-storage-system__high-voltage-enabling) .
Install the intake manifold cover. Refer to «Upper Intake Manifold Sight Shield Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-repair-instructions-on-vehicle) .

Remove the rocker arm cover. Refer to «Valve Rocker Arm Cover Replacement - Left Side»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) or «Valve Rocker Arm Cover Replacement - Right Side»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) .
Remove the number one cylinder spark plug. Refer to «Spark Plug Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
Remove the rocker arm bolts.
Remove the rocker arms (1, 2).
Remove the rocker arm pivot support.
Remove the pushrods.
Clean and inspect the rocker arms and pushrods, if required. Refer to «Valve Rocker Arm and Push Rod Cleaning and Inspection»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__valve-rocker-arm-and-push-rod) .

Note. When reusing the valve train components, always install the components to the original location and position.

Valve lash is net build, no valve adjustment is required.

Lubricate the rocker arms and pushrods with clean engine oil.
Lubricate the flange of the rocker arm bolts with clean engine oil. Lubricate the flange or washer surface of the bolt that will contact the rocker arm.
Install the rocker arm pivot support.
Install the pushrods.
Install the rocker arms and bolts.
Rotate the crankshaft clockwise until the number one piston is at top dead center (TDC) of the compression stroke. In this position, the number one cylinder rocker arms will be off lobe lift.
With the engine in the number one firing position, tighten the following rocker arm bolts: Tighten: Tighten cylinders 1, 2, 7 and 8 exhaust valve rocker arm bolts to 30 N.m (22 lb ft). Tighten cylinders 1, 3, 4 and 5 intake valve rocker arm bolts to 30 N.m (22 lb ft).
Rotate the crankshaft clockwise 360 degrees.
Tighten the following rocker arm bolts: Tighten: Tighten cylinders 3, 4, 5 and 6 exhaust valve rocker arm bolts to 30 N.m (22 lb ft). Tighten cylinders 2, 6, 7 and 8 intake valve rocker arm bolts to 30 N.m (22 lb ft).
Install the number one cylinder spark plug. Refer to «Spark Plug Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
Install the rocker arm cover. Refer to «Valve Rocker Arm Cover Replacement - Left Side»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) or «Valve Rocker Arm Cover Replacement - Right Side»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) .

Valve Stem Oil Seal and Valve Spring Replacement

Special Tools

J 22794 Spark Plug Port Adapter
J 38606 Valve Spring Compressor

Remove the rocker arm. Refer to «Valve Rocker Arm and Push Rod Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) .
Disconnect the spark plug wire at the spark plug. Twist each plug wire boot 1/2 turn. Pull only on the boot in order to remove the wire from the spark plug.
Loosen the spark plug 1 or 2 turns.
Brush or air blast away any dirt or debris from around the spark plug.
Remove the spark plug.
Install the J 22794 into the spark plug hole.
Attach an air hose to the J 22794 .
Apply compressed air to the J 22794 in order to hold the valves in place.
Use the J 38606 in order to compress the valve spring.
Remove the valve stem keys (225).
Carefully release the valve spring tension.
Remove the J 38606 .
Remove the valve spring cap (224).
Remove the valve spring (223).
Remove the valve stem oil seal (222).
Remove the valve (228).

Clean the cylinder head valve spring seat area.
Lubricate the valve guide and valve stem oil seal with clean engine oil.
Install the valves (228) into the proper port.
Install the valve stem oil seal (222).
Install the valve spring (223).
Install the valve spring cap (224).
Compress the valve spring using the J 38606 .
Install the valve keys. Use grease in order to hold the valve keys in place. Make sure the keys seat properly in the groove of the valve stem. Carefully release the valve spring pressure, making sure the valve keys stay in place. Remove the J 38606 . Tap the end of the valve stem with a plastic faced hammer to seat the keys, if necessary.
Remove the J 22794 from the spark plug port.
Hand start the spark plug. Tighten: Tighten the spark plug to 15 N.m (11 lb ft).
Install the spark plug wires at the ignition coil.
Install the spark plug wire to the spark plug.
Inspect the wires for proper installation: Push sideways on each boot in order to check for proper installation. Reinstall any loose boot.
Install the rocker arm. Refer to «Valve Rocker Arm and Push Rod Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) .

Remove the oil level indicator (418).
Remove the wheelhouse liner. Refer to «Front Wheelhouse Liner Replacement - Right Side»(/cadillac/escalade/gmt900-2006-2014/remont/frames-subframes-crossmembers/#frame-and-underbody) .
Remove the oil level indicator tube bolt (419).
Remove the oil level indicator tube (420) from the engine block.
Inspect the O-ring seal for cuts or damage.
Remove the O-ring seal (421) from the tube, if required.

Lubricate the O-ring seal (421) with clean engine oil.
Install a NEW O-ring seal onto the oil level indicator tube, if required.
Install the oil level indicator tube (420) between the exhaust manifold and engine block.
Raise and suitably support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#general-information__lifting-and-jacking-the-vehicle) .
Insert the oil level indicator tube into the block. The tube must be installed with the collar flush to the block.
Lower the vehicle.
Install the oil level indicator tube bolt (419). Tighten: Tighten the bolt to 25 N.m (18 lb ft).
Install the wheelhouse liner. Refer to «Front Wheelhouse Liner Replacement - Right Side»(/cadillac/escalade/gmt900-2006-2014/remont/frames-subframes-crossmembers/#frame-and-underbody) .
Install the oil level indicator (418).

Cylinder Head Replacement - Left Side

Special Tools

J 42385-200 Common Thread Repair Kit
J 45059 Angle Meter

Remove the drive belt. Refer to «Drive Belt Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) .
Remove the drive belt idler pulley bracket bolts (1).
Remove the drive belt idler pulley bracket (2).
Remove the intake manifold. Refer to «Intake Manifold Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) .
Remove the coolant air bleed pipe. Refer to «Engine Coolant Air Bleed Pipe Replacement (without AFM)»(/cadillac/escalade/gmt900-2006-2014/remont/cooling-system-mechanical/#engine-cooling-system) or «Engine Coolant Air Bleed Pipe Replacement (with AFM)»(/cadillac/escalade/gmt900-2006-2014/remont/cooling-system-mechanical/#engine-cooling-system) .
Remove the left exhaust manifold. Refer to «Exhaust Manifold Replacement - Left Side»(/cadillac/escalade/gmt900-2006-2014/remont/exhaust/#engine-exhaust-system) .
Remove the pushrods. Refer to «Valve Rocker Arm and Push Rod Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) .
Remove the engine ground strap bolt from the rear of the cylinder head.
Remove the ground strap from the cylinder head.
Remove and discard the cylinder head bolts (220, 221).
Remove the cylinder head (218).
Remove and discard the cylinder head gasket (217).
If required, clean and inspect the cylinder head. Refer to «Cylinder Head Cleaning and Inspection»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__cylinder-head-cleaning-and-inspection) .

Clean the engine block cylinder head bolt holes, if required. Thread repair tool J 42385-107, found in J 42385-200 may be used to clean the threads of old threadlocking material.
Spray cleaner GM P/N 12346139, P/N 12377981 (Canadian P/N 10953463), or equivalent into the hole.
Clean the cylinder head bolt holes with compressed air.
Check the cylinder head locating pins for proper installation (a) 8.3 mm (0.327 in).
Install the NEW cylinder head gasket (217) onto the locating pins.
Install the cylinder head (218) onto the locating pins.
Install the NEW cylinder head bolts (220, 221).
Tighten the cylinder head bolts. Tighten the M11 cylinder head bolts (1-10) a first pass in sequence to 30 N.m (22 lb ft). Tighten the M11 cylinder head bolts (1-10) a second pass in sequence to 90 degrees using J 45059 . Tighten the M11 cylinder head bolts (1-10) a final pass to 70 degrees using J 45059 . Tighten the M8 cylinder head bolts (11-15) to 30 N.m (22 lb ft). Begin with the center bolt (11) and alternating side-to-side, work outward tightening all of the bolts.
Position the ground strap to the rear of the left cylinder head.
Install the engine ground strap bolt to the rear of the left cylinder head and tighten the bolt to 16 N.m (12 lb ft).
Install the pushrods. Refer to «Valve Rocker Arm and Push Rod Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) .
Install the left exhaust manifold. Refer to «Exhaust Manifold Replacement - Left Side»(/cadillac/escalade/gmt900-2006-2014/remont/exhaust/#engine-exhaust-system) .
Install the coolant air bleed pipe. Refer to «Engine Coolant Air Bleed Pipe Replacement (without AFM)»(/cadillac/escalade/gmt900-2006-2014/remont/cooling-system-mechanical/#engine-cooling-system) or «Engine Coolant Air Bleed Pipe Replacement (with AFM)»(/cadillac/escalade/gmt900-2006-2014/remont/cooling-system-mechanical/#engine-cooling-system) .
Install the intake manifold. Refer to «Intake Manifold Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) .
Position the drive belt idler pulley bracket (2).
Install the drive belt idler pulley bracket bolts (1) and tighten to 50 N.m (37 lb ft).
Remove the drive belt. Refer to «Drive Belt Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) .

Cylinder Head Replacement - Right Side

Special Tools

J 42385-200 Common Thread Repair Kit
J 45059 Angle Meter

Remove the drive motor generator control module. Refer to «Drive Motor Generator Control Module Assembly Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/engine-control-systems/#hybrid-engine-controls-repair-instructions) .
Remove the oil level indicator. Refer to «Oil Level Indicator Tube Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-repair-instructions-on-vehicle) .
Remove the intake manifold. Refer to «Intake Manifold Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) .
Remove the coolant air bleed pipe. Refer to «Engine Coolant Air Bleed Pipe Replacement (without AFM)»(/cadillac/escalade/gmt900-2006-2014/remont/cooling-system-mechanical/#engine-cooling-system) or «Engine Coolant Air Bleed Pipe Replacement (with AFM)»(/cadillac/escalade/gmt900-2006-2014/remont/cooling-system-mechanical/#engine-cooling-system) .
Remove the right exhaust manifold. Refer to «Exhaust Manifold Replacement - Right Side»(/cadillac/escalade/gmt900-2006-2014/remont/exhaust/#engine-exhaust-system) .
Remove the pushrods. Refer to «Valve Rocker Arm and Push Rod Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) .
Remove the engine harness stud (4) from the front of the right cylinder head.
Position the engine harness aside.
Remove and discard the cylinder head bolts (220, 221).
Remove the cylinder head (218).
Remove and discard the cylinder head gasket (217).
If required, clean and inspect the cylinder head. Refer to «Cylinder Head Cleaning and Inspection»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__cylinder-head-cleaning-and-inspection) .

Clean the engine block cylinder head bolt holes, if required. Thread repair tool J 42385-107, found in J 42385-200 may be used to clean the threads of old threadlocking material.
Spray cleaner GM P/N 12346139, P/N 12377981 (Canadian P/N 10953463), or equivalent into the hole.
Clean the cylinder head bolt holes with compressed air.
Check the cylinder head locating pins for proper installation (a) 8.3 mm (0.327 in).
Install the NEW cylinder head gasket (217) onto the locating pins.
Install the cylinder head (218) onto the locating pins.
Install the NEW cylinder head bolts (220, 221).
Tighten the cylinder head bolts. Tighten the M11 cylinder head bolts (1-10) a first pass in sequence to 30 N.m (22 lb ft). Tighten the M11 cylinder head bolts (1-10) a second pass in sequence to 90 degrees using J 45059 . Tighten the M11 cylinder head bolts (1-10) a final pass to 70 degrees in sequence using J 45059 . Tighten the M8 cylinder head bolts (11-15) to 30 N.m (22 lb ft). Begin with the center bolt (11) and alternating side-to-side, work outward tightening all of the bolts.
Position the engine harness to the cylinder head.
Install the engine harness stud (1) to the front of the right cylinder head and tighten the stud to 25 N.m (18 lb ft).
Install the pushrods. Refer to «Valve Rocker Arm and Push Rod Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) .
Install the right exhaust manifold. Refer to «Exhaust Manifold Replacement - Right Side»(/cadillac/escalade/gmt900-2006-2014/remont/exhaust/#engine-exhaust-system) .
Install the coolant air bleed pipe. Refer to «Engine Coolant Air Bleed Pipe Replacement (without AFM)»(/cadillac/escalade/gmt900-2006-2014/remont/cooling-system-mechanical/#engine-cooling-system) or «Engine Coolant Air Bleed Pipe Replacement (with AFM)»(/cadillac/escalade/gmt900-2006-2014/remont/cooling-system-mechanical/#engine-cooling-system) .
Install the intake manifold. Refer to «Intake Manifold Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) .
Install the oil level indicator. Refer to «Oil Level Indicator Tube Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-repair-instructions-on-vehicle) .
Install the drive motor generator control module. Refer to «Drive Motor Generator Control Module Assembly Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/engine-control-systems/#hybrid-engine-controls-repair-instructions) .

Remove the cylinder head and gasket. Refer to «Cylinder Head Replacement - Left Side»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__cylinder-head-replacement-left-side) or «Cylinder Head Replacement - Right Side»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__cylinder-head-replacement-right-side) .
Remove the valve lifter guide bolts (211).
Remove the valve lifter guides (210) with the lifters. Note the installed position of the guides. The notched area of the guides is to align with the locating tab on the engine block.
Remove the valve lifters (209) from the guide (210).
Organize or mark the components so that they can be installed in the same location from which they were removed, if required.
Clean and inspect the valve lifters, if required. Refer to «Valve Lifter and Guide Cleaning and Inspection»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) .

Note. When reusing valve lifters, install the lifters to their original locations.

Lubricate the valve lifters (209) and engine block valve lifter bores with clean engine oil.
Insert the valve lifters into the lifter guides (210). Align the flat area on the top of the lifter with the flat area in the lifter guide bore. Push the lifter completely into the guide bore.
Install the valve lifters and guide (210) to the engine block.
Install the valve lifter guide bolts. Tighten: Tighten the bolt to 12 N.m (106 lb in).
Install the cylinder head and gasket. Refer to «Cylinder Head Replacement - Left Side»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__cylinder-head-replacement-left-side) or «Cylinder Head Replacement - Right Side»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__cylinder-head-replacement-right-side) .

Crankshaft Balancer Replacement

Special Tools

J 41478 Crankshaft Front Oil Seal Installer
J 41665 Crankshaft Balancer and Sprocket Installer
J 41816-A Crankshaft Balancer Remover
J 41816-2 Crankshaft End Protector
J 42386-A Flywheel Holding Tool
J 45059 Angle Meter

Remove the drive belt. Refer to «Drive Belt Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) .
Remove the cooling fan and shroud. Refer to «Cooling Fan and Shroud Replacement (HP2)»(/cadillac/escalade/gmt900-2006-2014/remont/cooling-system-mechanical/#engine-cooling-system) .
Install the J 42386-A (1) and bolts. Use one M10-1.5 x 120 mm and one M10-1.5 x 45 mm bolt for proper tool operation. Tighten: Tighten the J 42386-A bolts to 50 N.m (37 lb ft).
Remove the crankshaft balancer bolt (139). Do not discard the crankshaft balancer bolt at this time. The old balancer bolt will be used during the balancer installation procedure.
Install the J 41816-A (1) and J 41816-2 (2) to the crankshaft balancer.
Use the J 41816-A and the J 41816-2 to remove the crankshaft balancer (138).
Remove the J 41816-A and the J 41816-2 from the crankshaft balancer.

Note. The crankshaft balancer installation and bolt tightening involves a four stage tightening process. The first pass ensures that the balancer is installed completely onto the crankshaft. The second, third, and fourth passes tighten the NEW bolt to the proper torque. The used crankshaft balancer bolt will be used ONLY during the first pass of the balancer installation procedure. Install a NEW bolt and tighten as described in the second, third and fourth passes of the balancer bolt tightening procedure.

Position the crankshaft balancer (138) onto the end of the crankshaft.
Install the J 41665 and the threaded rod from the J 41478 to crankshaft balancer and install the balancer. Assemble the threaded rod, nut, washer and installer. Insert the smaller end of the installer into the front of the balancer. Use a wrench and hold the hex end of the threaded rod. Use a second wrench and rotate the installation tool nut clockwise until the balancer is started onto the crankshaft. Remove the tool and reverse the installation tool. Position the larger end of the installer against the front of the balancer. Use a wrench and hold the hex end of the threaded rod. Use a second wrench and rotate the installation tool nut clockwise until the balancer is installed onto the crankshaft. Remove the J 41665 and the threaded rod.
Install the USED crankshaft balancer bolt (139). Tighten: Tighten the USED bolt to 330 N.m (240 lb ft).
Remove the USED crankshaft balancer bolt.
Measure for a correctly installed balancer. If the balancer is not installed to the proper dimension, install the J 41665 and repeat the installation procedure.
Install the NEW crankshaft balancer bolt (139). Tighten: Tighten the bolt a first pass to 50 N.m (37 lb ft). Tighten the bolt a final pass to 140 degrees using J 45059 .
Remove the J 42386-A (1) and bolts.
Install the cooling fan and shroud. Refer to «Cooling Fan and Shroud Replacement (HP2)»(/cadillac/escalade/gmt900-2006-2014/remont/cooling-system-mechanical/#engine-cooling-system) .
Install the drive belt. Refer to «Drive Belt Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) .
Perform the crankshaft position (CKP) system variation learn procedure. Refer to «Crankshaft Position System Variation Learn»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions__crankshaft-position-system-variation-learn) .

J 41478 Crankshaft Front Oil Seal Installer

Remove the crankshaft balancer. Refer to «Crankshaft Balancer Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-repair-instructions-on-vehicle__crankshaft-balancer-replacement) .
Remove the crankshaft front oil seal (140) from the front cover.

IMPORTANT

Do not lubricate the oil seal sealing surface. Do not reuse the crankshaft front oil seal.

Lubricate the outer edge of the oil seal (140) with clean engine oil.
Lubricate the front cover oil seal bore with clean engine oil.
Install the crankshaft front oil seal (140) onto the J 41478 guide.
Install the J 41478 threaded rod (with nut, washer, guide, and oil seal) into the end of the crankshaft.
Use the J 41478 in order to install the oil seal into the cover bore. Use a wrench and hold the hex on the installer bolt. Use a second wrench and rotate the installer nut clockwise until the seal bottoms in the cover bore. Remove the J 41478 . Inspect the oil seal for proper installation. The oil seal should be installed evenly and completely into the front cover bore.
Install the crankshaft balancer. Refer to «Crankshaft Balancer Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-repair-instructions-on-vehicle__crankshaft-balancer-replacement) .

Remove the water pump. Refer to «Water Pump Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/cooling-system-mechanical/#engine-cooling-system) .
Disconnect the engine harness electrical connector from the camshaft position (CMP) actuator magnet.
Remove the CMP actuator magnet bolts (751) and magnet (752).
Remove and discard the CMP actuator magnet gasket (753).

Note. The gasket surface should be free of oil or other foreign material during assembly.

Install a NEW CMP actuator magnet gasket (753) onto the CMP actuator magnet.
Install the CMP actuator magnet (752) to the front cover.
Install the CMP actuator magnet bolts (751). Tighten: Tighten the bolts to 12 N.m (106 lb in).
Connect the engine harness electrical connector to the CMP actuator magnet.
Install the water pump. Refer to «Water Pump Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/cooling-system-mechanical/#engine-cooling-system) .

EN-48853 Front Cover Alignment Tool

Remove the water pump. Refer to «Water Pump Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/cooling-system-mechanical/#engine-cooling-system) .
Remove the crankshaft balancer. Refer to «Crankshaft Balancer Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-repair-instructions-on-vehicle__crankshaft-balancer-replacement) .
Disconnect the camshaft position sensor wire harness electrical connector (1) from the CMP actuator magnet.
Disconnect the engine harness electrical connector (2) from the CMP sensor wire harness electrical connector.
Remove the oil pan-to-front cover bolts (1).
Remove the front cover bolts (501).
Remove the front cover (502) and gasket (503).
Discard the front cover gasket.
Remove the crankshaft front oil seal.
If replacing the engine front cover perform the following steps, otherwise proceed to step 10 of the installation procedure.
Remove the CMP sensor wire harness bolts (1).
Disconnect the CMP sensor wire harness from the CMP sensor.
Remove the CMP sensor wire harness (2).
Remove the CMP sensor (703).
Remove the CMP actuator magnet bolts (751), and magnet (752).
Remove and discard the CMP actuator magnet gasket (753).

Note. Do not reuse the crankshaft oil seal or front cover gasket. Do not apply any type of sealant to the front cover gasket, unless specified. The special tool in this procedure is used to properly center the front crankshaft front oil seal. All gasket surfaces should be free of oil or other foreign material during assembly. The crankshaft front oil seal MUST be centered in relation to the crankshaft. An improperly aligned front cover may cause premature front oil seal wear and/or engine oil leaks.

If replacing the front cover perform the following steps, otherwise proceed to step 10.
Install a NEW CMP actuator magnet gasket (753) onto the magnet.
Install the CMP actuator magnet (752) and bolts (751). Tighten: Tighten the bolts to 12 N.m (106 lb in).
Inspect the CMP sensor O-ring seal for cuts or damage. If the seal is not cut or damaged, it may be reused.
Lubricate the O-ring seal (704) with clean engine oil.
Install the CMP sensor (703).
Position the CMP sensor wire harness (2) to the front cover.
Connect the CMP sensor wire harness to the CMP sensor.
Install the CMP sensor wire harness bolts (1). Tighten: Tighten the bolts to 12 N.m (106 lb in).
Apply a 5 mm (0.20 in) bead of sealant, 20 mm (0.80 in) long to the oil pan to engine block junction. Refer to «Adhesives, Fluids, Lubricants, and Sealers»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-specifications__adhesives-fluids-lubricants-and-sealers) .
Position the NEW engine front cover gasket (503) and front cover (502) to the engine.
Install the front cover bolts (501) until snug. Do not overtighten.
Install the oil pan-to-front cover bolts (1) finger tight. Do not over tighten.
Install EN-48853 to the front cover.
Install the crankshaft balancer bolt until snug. Do not overtighten. Tighten: Tighten the oil pan to front cover bolts to 25 N.m (18 lb ft). Tighten the engine front cover bolts to 25 N.m (18 lb ft).
Remove the tools.
Position the CMP sensor.
Connect the engine harness electrical connector (2) to the CMP sensor wire harness electrical connector.
Connect the camshaft position sensor wire harness electrical connector (1) to the CMP actuator magnet.
Install a NEW crankshaft front oil seal. Refer to «Crankshaft Front Oil Seal Replacement (With LY6)»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-repair-instructions-on-vehicle) .
Install the water pump. Refer to «Water Pump Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/cooling-system-mechanical/#engine-cooling-system) .

J 45059 Angle Meter

Remove the camshaft position (CMP) actuator magnet. Refer to «Camshaft Position Actuator Magnet Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) .
Remove and discard the CMP actuator solenoid valve.

Install the a NEW CMP actuator solenoid valve until snug. With the CMP actuator properly positioned onto the camshaft, the CMP actuator solenoid valve can be threaded completely into the camshaft using light hand pressure. Tighten by hand until snug.
Tighten the CMP actuator solenoid valve. Tighten: Tighten the solenoid valve a first pass to 65 N.m (48 lb ft). Tighten the solenoid valve a final pass and additional 90 degrees using J 45059 .
Install the CMP actuator magnet. Refer to «Camshaft Position Actuator Magnet Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) .

Camshaft Position Actuator Replacement

Special Tools

EN 46330 Timing Belt Tensioner Retaining Pin
J 45059 Angle Meter

Remove the oil pump. Refer to «Oil Pump, Screen, and Crankshaft Oil Deflector Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) .
Remove and discard the camshaft position (CMP) actuator solenoid valve (234).
Loosen and separate the CMP actuator and timing chain from the camshaft. Position your fingers behind the actuator sprocket and pull the actuator away from the front of the camshaft. Never pull on the reluctor wheel when attempting to remove the actuator.
Remove the CMP actuator (235) and timing chain (208).
Insert and secure a tie strap (1) through the center of the actuator and over the reluctor wheel.

Compress the timing chain tensioner guide and install the EN 46330 .
Identify the alignment hole (1) in the rear face of the CMP actuator and the locating pin (2) on the front face of the camshaft.
Install the CMP actuator and timing chain. Align the hole in the rear face of the CMP actuator with the locating pin on the front face of the camshaft. If necessary, rotate the camshaft or crankshaft sprockets in order to align the timing marks. Use care to install the actuator completely onto the front of the camshaft. Position your fingers onto the face of the actuator sprocket and push the actuator onto the front of the camshaft. Never push on the reluctor wheel when attempting to install the actuator.
Place a straight edge across the front face of the engine block and inspect for proper installation of the CMP actuator and timing chain. With the CMP actuator properly and completely installed onto the front of the camshaft, the timing chain will not protrude beyond the front face of the engine block.
Install a NEW CMP actuator solenoid valve (234). With the CMP actuator properly positioned onto the camshaft, the CMP actuator solenoid valve can be threaded completely into the camshaft using light hand pressure. Tighten by hand until snug.
Inspect the sprockets for proper alignment. The mark on the CMP actuator sprocket (1) should be located in the 6 o'clock position and the mark on the crankshaft sprocket (2) should be located in the 12 o'clock position.
Remove the EN 46330 .
Tighten the CMP actuator solenoid valve. Tighten: Tighten the valve a first pass to 65 N.m (48 lb ft). Tighten the valve a final pass and additional 90 degrees using J 45059 .
Install the oil pump. Refer to «Oil Pump, Screen, and Crankshaft Oil Deflector Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) .

J 41479 Crankshaft Rear Oil Seal Installer

Remove the automatic transmission flexplate, refer to «Automatic Transmission Flex Plate Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-repair-instructions-on-vehicle) .
Remove and discard the crankshaft rear oil seal (141).

Inspect the seal and identify the part number markings for proper orientation.
Install the J 41479 cone (2) and bolts onto the rear of the crankshaft.
Tighten the bolts until snug. Do not overtighten.
Install the rear oil seal onto the tapered cone (2) and push the seal to the rear seal bore. Install the oil seal with the part number markings facing away from the engine.
Thread the J 41479 threaded rod into the tapered cone until the tool (1) contacts the oil seal.
Align the oil seal into the tool (1).
Rotate the handle of the tool (1) clockwise until the seal enters the rear cover and bottoms into the cover bore.
Remove the J 41479 .
Install the automatic transmission flexplate. refer to «Automatic Transmission Flex Plate Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-repair-instructions-on-vehicle) .

Crankshaft Rear Oil Seal Housing Replacement

Special Tools

J 41476 Front and Rear Cover Alignment Tool
J 41479-2A Crankshaft Rear Oil Seal Installation Guide

Remove the automatic transmission flexplate. Refer to «Automatic Transmission Flex Plate Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) .
Remove the oil pan-to-rear oil seal housing bolts (1).
Remove the rear oil seal housing bolts (1).
Remove the rear oil seal housing (2) and gasket (3). Discard the gasket.
Remove and discard the rear oil seal (4).

Apply a 5 mm (0.2 in) bead of sealant, 20 mm (0.8 in) to the 2 joints (a) at the rear of the block/pan. Refer to «Adhesives, Fluids, Lubricants, and Sealers»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-specifications__adhesives-fluids-lubricants-and-sealers) .
Inspect the rear oil gallery plug for proper installation.

Installation Procedure - Cover with Seal

Install the J 41479-2A cone and bolts onto the rear of the crankshaft.
Install the NEW rear housing gasket (1), rear housing with seal (2), rear housing-to-engine bolts (3) and oil pan-to-rear housing bolts (4).
Tighten the rear housing-to-engine bolts (3) until snug. Do not overtighten. Tighten: Tighten the oil pan-to-rear housing bolts (4) to 12 N.m (106 lb in).
Tighten the rear housing-to-engine bolts (3). Tighten: Tighten the bolts to 30 N.m (22 lb ft).
Remove the J 41479-2A .
Install the automatic transmission flexplate. Refer to «Automatic Transmission Flex Plate Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) .

Installation Procedure - Cover without Seal

Position a NEW rear oil seal housing gasket (3) and the housing (2) to the engine.
Install the rear oil seal housing bolts (1) until snug. Do not overtighten.
Rotate the crankshaft until 2 opposing flywheel bolts holes are parallel to the oil pan surface.
Install the J 41476 and bolts onto the rear of the crankshaft.
Tighten the J 41476 bolts until snug. Do not overtighten.
Install the oil pan-to-rear oil seal housing bolts (1). Tighten: Tighten the oil pan-to-rear cover bolts to 12 N.m (106 lb in). Tighten the rear oil seal housing-to-engine bolts to 30 N.m (22 lb ft).
Remove the J 41476 .
Install a NEW crankshaft rear oil seal. Refer to «Crankshaft Rear Oil Seal Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-repair-instructions-on-vehicle) .
Install the automatic transmission flexplate. Refer to «Automatic Transmission Flex Plate Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) .

Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#general-information__lifting-and-jacking-the-vehicle) .
For 1500 series vehicles, remove the oil pan skid plate bolts and skid plate, if equipped.
For 2500 series vehicles, loosen the 2 rear oil pan skid plate bolts, remove the 2 front oil pan skid plate bolts and skid plate, if equipped.
Place a suitable drain pan under the oil filter.
Remove the oil filter (437).
Remove the oil filter adapter (438).

Install the oil filter adapter (438). Tighten: Tighten the adapter to 55 N.m (40 lb ft).
Lubricate the oil filter seal with clean engine oil.
Install the oil filter (437). Tighten: Tighten the filter to 30 N.m (22 lb ft).
For 2500 series vehicles, position the oil pan skid plate and tighten until snug the 2 rear oil pan skid plate bolts, install the 2 front oil pan skid plate bolts, if equipped. Tighten: Tighten the bolts to 28 N.m (21 lb ft).
For 1500 series vehicles, position the oil pan skid plate and install the oil pan skid plate bolts, if equipped. Tighten: Tighten the bolts to 28 N.m (21 lb ft).
Lower the vehicle.
Refill the engine oil. Refer to «Approximate Fluid Capacities»(/cadillac/escalade/gmt900-2006-2014/remont/lubrication-system/#maintenance-and-lubrication__approximate-fluid-capacities) and/or «Fluid and Lubricant Recommendations (USA and Canada)»(/cadillac/escalade/gmt900-2006-2014/remont/lubrication-system/#maintenance-and-lubrication__fluid-and-lubricant-recommendations-usa-and) .
Start the engine and inspect for leaks.

Raise and suitably support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#general-information__lifting-and-jacking-the-vehicle) .
Remove the oil pan cover bolts (435), cover (434), and gasket (433). Discard the gasket.

Position a NEW oil pan cover gasket (433) and the cover (434) to the oil pan and install the bolts (435). Tighten the bolts to 12 N.m (106 lb in).
Lower the vehicle.

Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#general-information__lifting-and-jacking-the-vehicle) .
For 1500 series vehicles, remove the oil pan skid plate bolts and skid plate, if equipped.
For Hybrid (HP2) vehicles, remove the steering gear motor shield.
For 2500 series vehicles, loosen the 2 rear oil pan skid plate bolts, remove the 2 front oil pan skid plate bolts and skid plate, if equipped.
Remove the engine shield. Refer to «Engine Shield Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/frames-subframes-crossmembers/#frame-and-underbody) .
Unbolt the steering rack and hang downward.
Place a suitable drain pan under the oil pan drain plug.
Remove the oil pan drain plug (430).
Allow the oil pan to drain completely.
Re-install the oil pan drain plug. Tighten: Tighten the oil pan drain plug to 25 N.m (18 lb ft).
Place the drain pan under the oil filter.
Remove the oil filter (437).
Allow the oil to drain completely.
Re-install the oil filter. Tighten: Tighten the oil filter to 30 N.m (22 lb ft).
Remove the right side transmission cover bolt (2).
Remove the left side transmission cover bolt and cover.
For 1500 series vehicles, remove the crossbar bolts/nuts and crossbar.
For 2500 series vehicles, remove the crossbar bolts/nuts and crossbar.
Remove the 2 lower transmission bolts (1).
Disconnect the engine harness electrical connector (1) from the oil level sensor.
Remove the air conditioning (A/C) compressor bracket bolts (1).
Remove the oil pan bolts.
Remove the oil pan.
If reusing the oil pan perform the following steps, otherwise proceed to step 3 of the installation procedure.
Drill out the oil pan gasket rivets (2), if necessary.
Remove the oil pan gasket (1) from the pan.
Discard the oil pan gasket.
Discard the rivets, if necessary.

Note. The alignment of the structural oil pan is critical. The rear bolt hole locations of the oil pan provide mounting points for the transmission bellhousing. To ensure the rigidity of the powertrain and correct transmission alignment, it is important that the rear of the block and the rear of the oil pan must NEVER protrude beyond the engine block and transmission bellhousing plane. Do not reuse the oil pan gasket. It is not necessary to rivet the NEW gasket to the oil pan.

If reusing the oil pan perform the following step, otherwise proceed to step 3.
Place a NEW oil pan gasket onto the oil pan.
Apply a 5 mm (0.20 in) bead of sealant, 20 mm (0.80 in) long to the engine block. Apply the sealant directly onto the tabs of the front cover gasket that protrudes into the oil pan surface. Refer to «Adhesives, Fluids, Lubricants, and Sealers»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-specifications__adhesives-fluids-lubricants-and-sealers) .
Apply a 5 mm (0.20 in) bead of sealant, 20 mm (0.8 in) long to the engine block. Apply the sealant directly onto the tabs of the rear cover gasket that protrudes into the oil pan surface. Refer to «Adhesives, Fluids, Lubricants, and Sealers»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-specifications__adhesives-fluids-lubricants-and-sealers) .
Install 1 oil pan bolt into a oil pan bolt hole and up through the gasket.
Position and install the oil pan and the rest of the oil pan bolts.
Tighten the oil pan bolts. Tighten: M6 Bolts-Tighten the bolt to 12 N.m 106 lb in). M8 Bolts-Tighten the bolt to 25 N.m (18 lb ft).
Install the 2 lower transmission bolts. Tighten: Tighten the bolts to 50 N.m (37 lb ft).
Install the air conditioning (A/C) compressor bracket bolts (1). Tighten: Tighten the bolt to 50 N.m (37 lb ft).
Connect the engine harness electrical connector (1) to the oil level sensor.
For both the 1500 and 2500 series, perform the following steps prior to installing the crossbar bolts: Remove all traces of the original adhesive patch. Clean the threads of the bolts with denatured alcohol or equivalent and allow to dry. Apply threadlock GM P/N 12345493 (Canadian P/N 10953488) or equivalent to the bolt threads.
For 2500 series vehicles, install the crossbar and crossbar bolts/nuts. Tighten: Tighten the nuts to 120 N.m (89 lb ft).
For 1500 series vehicles, install the crossbar and crossbar bolts/nuts. Tighten: Tighten the nuts to 100 N.m (74 lb ft).
Position the left side transmission cover and install the cover bolt. Tighten: Tighten the bolt to 12 N.m (106 lb in).
Install the right side transmission cover bolt (2). Tighten: Tighten the bolt to 12 N.m (106 lb in).
If reusing the old oil pan remove the old oil filter and install a NEW oil filter.
Lubricate the NEW oil filter seal with clean engine oil.
Install the NEW oil filter (437). Tighten: Tighten the oil filter to 30 N.m (22 lb ft).
Install the oil pan drain plug (430). Tighten: Tighten the drain plug to 25 N.m (18 lb ft).
Raise the steering rack in place and install the steering rack bolts. Tighten: Tighten the left side steering rack bolts to 200 N.m (148 lb ft). Tighten the right side steering rack bolts to 100 N.m (74 lb ft).
Install the engine shield. Refer to «Engine Shield Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/frames-subframes-crossmembers/#frame-and-underbody) .
For 2500 series vehicles, position the oil pan skid plate and tighten until snug the 2 rear oil pan skid plate bolts, install the 2 front oil pan skid plate bolts, if equipped. Tighten: Tighten the bolts to 28 N.m (21 lb ft).
For Hybrid (HP2) vehicles, Install the steering gear motor shield.
For 1500 series vehicles, position the oil pan skid plate and install the oil pan skid plate bolts, if equipped. Tighten: Tighten the bolts to 28 N.m (21 lb ft).
Lower the vehicle.
Fill the engine with NEW engine oil. Refer to «Fluid and Lubricant Recommendations (USA and Canada)»(/cadillac/escalade/gmt900-2006-2014/remont/lubrication-system/#maintenance-and-lubrication__fluid-and-lubricant-recommendations-usa-and) and «Approximate Fluid Capacities»(/cadillac/escalade/gmt900-2006-2014/remont/lubrication-system/#maintenance-and-lubrication__approximate-fluid-capacities) .
Start the engine and inspect for leaks.

Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#general-information__lifting-and-jacking-the-vehicle) .
For 1500 series vehicles, remove the oil pan skid plate bolts and skid plate, if equipped.
For Hybrid (HP2) vehicles, remove the steering gear motor shield.
For 2500 series vehicles, loosen the 2 rear oil pan skid plate bolts, remove the 2 front oil pan skid plate bolts and skid plate, if equipped.
Remove the engine shield. Refer to «Engine Shield Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/frames-subframes-crossmembers/#frame-and-underbody) .
Remove the front differential carrier. Refer to «Differential Carrier Assembly Replacement (9.25 inch)»(/cadillac/escalade/gmt900-2006-2014/remont/differentials-drive-axles/#front-drive-axle) or «Differential Carrier Assembly Replacement (8.25 inch)»(/cadillac/escalade/gmt900-2006-2014/remont/differentials-drive-axles/#front-drive-axle) .
Unbolt the steering rack and hang downward.
Place a suitable drain pan under the oil pan drain plug.
Remove the oil pan drain plug (430).
Allow the oil pan to drain completely.
Re-install the oil pan drain plug. Tighten: Tighten the oil pan drain plug to 25 N.m (18 lb ft).
Place the drain pan under the oil filter.
Remove the oil filter (437).
Allow the oil to drain completely.
Re-install the oil filter. Tighten: Tighten the oil filter to 30 N.m (22 lb ft).
Remove the right side transmission cover bolt (2).
Remove the left side transmission cover bolt and cover.
For 1500 series vehicles, remove the crossbar bolts/nuts and crossbar.
For 2500 series vehicles, remove the crossbar bolts/nuts and crossbar.
Remove the 2 lower transmission bolts (1).
Disconnect the engine harness electrical connector (1) from the oil level sensor.
Remove the air conditioning (A/C) compressor bracket bolts (1).
Remove the oil pan bolts.
Remove the oil pan.
If reusing the oil pan perform the following steps, otherwise proceed to step 3 of the installation procedure.
Drill out the oil pan gasket rivets (2), if necessary.
Remove the oil pan gasket (1) from the pan.
Discard the oil pan gasket.
Discard the rivets, if necessary.

If reusing the oil pan perform the following step, otherwise proceed to step 3.
Place a NEW oil pan gasket onto the oil pan.
Apply a 5 mm (0.20 in) bead of sealant, 20 mm (0.80 in) long to the engine block. Apply the sealant directly onto the tabs of the front cover gasket that protrudes into the oil pan surface. Refer to «Adhesives, Fluids, Lubricants, and Sealers»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-specifications__adhesives-fluids-lubricants-and-sealers) .
Apply a 5 mm (0.20 in) bead of sealant, 20 mm (0.8 in) long to the engine block. Apply the sealant directly onto the tabs of the rear cover gasket that protrudes into the oil pan surface. Refer to «Adhesives, Fluids, Lubricants, and Sealers»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-specifications__adhesives-fluids-lubricants-and-sealers) .
Install 1 oil pan bolt into a oil pan bolt hole and up through the gasket.
Position and install the oil pan and the rest of the oil pan bolts.
Tighten the oil pan bolts. Tighten: M6-Tighten the bolts to 12 N.m (106 lb in). M8-Tighten the bolts to 25 N.m (18 lb ft).
Install the 2 lower transmission bolts (1) until snug. Tighten: Tighten the bolts to 50 N.m (37 lb ft).
Install the air conditioning (A/C) compressor bracket bolts (1). Tighten: Tighten the bolt to 50 N.m (37 lb ft).
Connect the engine harness electrical connector (1) to the oil level sensor.
For both the 1500 and 2500 series, perform the following steps prior to installing the crossbar bolts. Remove all traces of the original adhesive patch. Clean the threads of the bolts with denatured alcohol or equivalent and allow to dry. Apply threadlock GM P/N 12345493 (Canadian P/N 10953488) or equivalent to the bolt threads.
For 2500 series vehicles, install the crossbar and crossbar bolts/nuts. Tighten: Tighten the nuts to 120 N.m (89 lb ft).
For 1500 series vehicles, install the crossbar and crossbar bolts/nuts. Tighten: Tighten the nuts to 100 N.m (74 lb ft).
Position the left side transmission cover and install the cover bolt. Tighten: Tighten the bolt to 12 N.m (106 lb in).
Install the right side transmission cover bolt (2). Tighten: Tighten the bolt to 12 N.m (106 lb in).
If reusing the old oil pan remove the old oil filter and install a NEW oil filter.
Lubricate the NEW oil filter seal with clean engine oil.
Install the NEW oil filter (437). Tighten: Tighten the oil filter to 30 N.m (22 lb ft).
Install the oil pan drain plug (430). Tighten: Tighten the drain plug to 25 N.m (18 lb ft).
Install the front differential carrier. Refer to «Differential Carrier Assembly Replacement (9.25 inch)»(/cadillac/escalade/gmt900-2006-2014/remont/differentials-drive-axles/#front-drive-axle) or «Differential Carrier Assembly Replacement (8.25 inch)»(/cadillac/escalade/gmt900-2006-2014/remont/differentials-drive-axles/#front-drive-axle) .
Raise the steering rack in place and install the steering rack bolts. Tighten: Tighten the left side steering rack bolts to 200 N.m (148 lb ft). Tighten the right side steering rack bolts to 100 N.m (74 lb ft).
Install the engine shield. Refer to «Engine Shield Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/frames-subframes-crossmembers/#frame-and-underbody) .
For 2500 series vehicles, position the oil pan skid plate and tighten until snug the 2 rear oil pan skid plate bolts, install the 2 front oil pan skid plate bolts, if equipped. Tighten: Tighten the bolts to 28 N.m (21 lb ft).
For Hybrid (HP2) vehicles, Install the steering gear motor shield.
For 1500 series vehicles, position the oil pan skid plate and install the oil pan skid plate bolts, if equipped. Tighten: Tighten the bolts to 28 N.m (21 lb ft).
Lower the vehicle.
Fill the engine with NEW engine oil. Refer to «Fluid and Lubricant Recommendations (USA and Canada)»(/cadillac/escalade/gmt900-2006-2014/remont/lubrication-system/#maintenance-and-lubrication__fluid-and-lubricant-recommendations-usa-and) and «Approximate Fluid Capacities»(/cadillac/escalade/gmt900-2006-2014/remont/lubrication-system/#maintenance-and-lubrication__approximate-fluid-capacities) .
Start the engine and inspect for leaks.

J 41712 Oil Pressure Switch Socket

Remove the intake manifold. Refer to «Intake Manifold Replacement (Without AFM)»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-repair-instructions-on-vehicle) or «Intake Manifold Replacement (With AFM)»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-repair-instructions-on-vehicle) .
Disconnect the engine harness electrical connector (1) from the oil pressure sensor.
Using the J 41712 or equivalent, remove the oil pressure sensor (706) and washer (707).

Apply sealant to the threads of the NEW oil pressure sensor. Refer to «Adhesives, Fluids, Lubricants, and Sealers»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-specifications__adhesives-fluids-lubricants-and-sealers) .
Using J 41712 or equivalent, install the oil pressure sensor (706) and washer (707). Tighten: Tighten the sensor to 35 N.m (26 lb ft).
Connect the engine harness electrical connector (1) to the oil pressure sensor. Tighten: Tighten the sensor to 35 N.m (26 lb ft).
Install the intake manifold. Refer to «Intake Manifold Replacement (Without AFM)»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-repair-instructions-on-vehicle) or «Intake Manifold Replacement (With AFM)»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-repair-instructions-on-vehicle) .

Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#general-information__lifting-and-jacking-the-vehicle) .
Place a suitable drain pan under the oil pan drain plug.
Remove the oil pan drain plug (430).
Allow the oil pan to drain completely.
Re-install the oil pan drain plug until snug.
Remove the drain pan from under the vehicle.
Disconnect the engine harness electrical connector (1) from the oil level sensor.
Remove the oil level sensor from the oil pan.

Install the oil level sensor to the oil pan. Tighten: Tighten the sensor to 20 N.m (15 lb ft).
Connect the engine harness electrical connector (1) to the oil level sensor.
Ensure that the oil pan drain plug is tight. Tighten: Tighten the drain plug (430) to 25 N.m (18 lb ft).
Lower the vehicle.
Fill the engine with NEW engine oil. Refer to «Fluid and Lubricant Recommendations (USA and Canada)»(/cadillac/escalade/gmt900-2006-2014/remont/lubrication-system/#maintenance-and-lubrication__fluid-and-lubricant-recommendations-usa-and) and «Approximate Fluid Capacities»(/cadillac/escalade/gmt900-2006-2014/remont/lubrication-system/#maintenance-and-lubrication__approximate-fluid-capacities) .
Start the engine and inspect for leaks.

Remove the oil pan. Refer to «Oil Pan Replacement (4WD)»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-repair-instructions-on-vehicle) or «Oil Pan Replacement (2WD)»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-repair-instructions-on-vehicle) .
Remove the engine front cover. Refer to «Engine Front Cover Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-repair-instructions-on-vehicle) .
Remove the oil pump screen bolt and nuts.
Remove the oil pump screen with O-ring seal.
Remove the O-ring seal from the pump screen.
Discard the O-ring seal.
Remove the remaining crankshaft oil deflector nuts.
Remove the crankshaft oil deflector.
Remove the oil pump bolts (411).
Remove the oil pump (413)

Note. Inspect the engine block oil galley passages. These areas must be free and clear of debris or restrictions.

Align the splined surfaces of the crankshaft sprocket and the oil pump drive gear and install the oil pump (413).
Install the oil pump (413) onto the crankshaft sprocket until the pump housing contacts the face of the engine block.
Install the oil pump bolts (411). Tighten: Tighten the bolts to 25 N.m (18 lb ft).
Position the crankshaft oil deflector and install the nuts until snug.
Lubricate a NEW oil pump screen O-ring seal with clean engine oil.
Install the NEW O-ring seal onto the oil pump screen. NOTE: Push the oil pump screen tube completely into the oil pump prior to tightening the bolt. Do not allow the bolt to pull the tube into the pump.
Align the oil pump screen mounting brackets with the correct crankshaft bearing cap studs.
Install the oil pump screen.
Install the oil pump screen bolt and nuts. Tighten: Tighten the bolt to 12 N.m (106 lb in). Tighten the nuts to 25 N.m (18 lb ft).
Install the engine front cover. Refer to «Engine Front Cover Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-repair-instructions-on-vehicle) .
Install the oil pan. Refer to «Oil Pan Replacement (4WD)»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-repair-instructions-on-vehicle) or «Oil Pan Replacement (2WD)»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-repair-instructions-on-vehicle) .

Timing Chain, Crankshaft Sprocket, Camshaft Position Actuator, and Solenoid Valve Replacement

Special Tools

EN 46330 Timing Chain Tensioner Retaining Pin
J 8433 Puller Bar
J 41478 Crankshaft Front Oil Seal Installer
J 41558 Crankshaft Sprocket Remover
J 41665 Crankshaft Balancer and Sprocket Installer
J 41816-2 Crankshaft End Protector
J 42386-A Flywheel Holding Tool
J 45059 Angle Meter

Remove the oil pump. Refer to «Oil Pump, Screen, and Crankshaft Oil Deflector Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) .
Rotate the crankshaft sprocket until the camshaft position (CMP) actuator alignment mark (1) and the crankshaft sprocket alignment mark (2) are aligned.
Install the J 42386-A (1) and bolts. Use one M10-1.5 x 120 mm and one M10-1.5 x 45 mm bolt for proper tool operation. Tighten: Tighten the J 42386-A bolts to 50 N.m (37 lb ft).
Remove and discard the CMP actuator solenoid valve (234).
Loosen and separate the CMP actuator and timing chain from the camshaft. Position your fingers behind the actuator sprocket and pull the actuator away from the front of the camshaft. Never pull on the reluctor wheel when attempting to remove the actuator.
Remove the CMP actuator (235) and timing chain (208).
Insert and secure a tie strap (1) through the center of the actuator and over the reluctor wheel.
Remove the timing chain tension bolts (231) and tensioner (232).
Using the J 41816-2 (1), the J 41558 (2), bolts (3) and the J 8433 (4) in order to remove the crankshaft sprocket.
Remove the crankshaft sprocket (207).
Remove the crankshaft sprocket key, if required.

Install the key into the crankshaft keyway, if previously removed.
Tap the key (122) into the keyway until both ends of the key bottom onto the crankshaft.
Install the crankshaft sprocket (207) onto the front of the crankshaft. Align the crankshaft key with the crankshaft sprocket keyway.
Use the J 41478 (1) and the J 41665 (2) in order to install the crankshaft sprocket. Install the sprocket onto the crankshaft until fully seated against the crankshaft flange.
Compress the timing chain tensioner guide and install the EN 46330 .
Install the timing chain tensioner (232) and bolts (231). Tighten: Tighten the bolts to 25 N.m (18 lb ft).
Identify the alignment hole (1) in the rear face of the CMP actuator and the locating pin (2) on the front face of he camshaft.
Align the CMP actuator so the timing mark is in the 6 o'clock position.
Install the CMP actuator (235) and timing chain (208). Align the hole in the face of the CMP actuator with the locating pin on the front face of the camshaft.
Use care to install the actuator completely onto the front of the camshaft. Position your fingers onto the face of the actuator sprocket and push the actuator onto the front of the camshaft. Never push on the reluctor wheel when attempting to install the actuator.
Place a straight edge across the front face of the engine block and inspect for proper installation of the CMP actuator and timing chain. With the CMP actuator properly and completely installed onto the front of the camshaft, the timing chain will not protrude beyond the front face of the engine block.
Install a NEW CMP actuator valve (234). With the CMP actuator properly positioned onto the camshaft, the CMP actuator solenoid valve can be threaded completely into the camshaft using light hand pressure. Tighten by hand until snug.
Inspect the sprockets for proper alignment. The mark on the CMP (1) actuator sprocket should be located in the 6 o'clock position and the mark on the crankshaft sprocket (2) should be located in the 12 o'clock position.
Remove the EN 46330 .
Tighten the CMP actuator solenoid valve. Tighten: Tighten the bolt a first pass to 65 N.m (48 lb ft). Tighten the bolt a final pass an additional 90 degrees using J 45059 .
Remove the J 42386-A (1) and bolts.
Install the oil pump. Refer to «Oil Pump, Screen, and Crankshaft Oil Deflector Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) .

Camshaft Replacement

Special Tools

EN 46330 Timing Belt Tensioner Retaining Pin
J 42386-A Flywheel Holding Tool
J 45059 Angle Meter

Note. If camshaft replacement is required, the valve lifters must also be replaced.

Remove the radiator support. Refer to «Radiator Support Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/exterior-body-panels/#bolted-exterior-body-panels-and-closures) .
Remove the valve lifters. Refer to «Valve Lifter Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) .
Remove the engine front cover. Refer to «Engine Front Cover Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) .
Rotate the crankshaft sprocket until the camshaft position (CMP) actuator alignment mark (1) and the crankshaft sprocket alignment mark (2) are aligned.
Install the J 42386-A (1) and bolts. Use one M10-1.5 x 120 mm and one M10-1.5 x 45 mm bolt for proper tool operation. Tighten: Tighten the J 42386-A bolts to 50 N.m (37 lb ft).
Remove and discard the CMP actuator solenoid valve (234).
Remove the CMP actuator (235) and timing chain (208).
Remove the camshaft retainer bolts (204) and retainer (203).
Install the camshaft sprocket bolt into the camshaft front bolt hole.
Using the bolt as a handle, carefully rotate and remove the camshaft from the engine block.
Remove the bolt from the camshaft.

Lubricate the camshaft journals and the bearings with clean engine oil.
Install the camshaft sprocket bolt into the camshaft front bolt hole.
Using the bolt as a handle, carefully install the camshaft into the engine block.
Remove the bolt from the front of the camshaft.
Install the camshaft retainer (203) and bolts (204). Install the retainer with the sealing gasket facing the engine block.
Tighten the camshaft retainer bolts. Tighten: Tighten the first design hex head bolts (3) to 25 N.m (18 lb ft). Tighten the second design TORX® head bolts (4) to 15 N.m (11 lb ft).
Compress the timing chain tensioner guide and install the EN 46330 .
Identify the alignment hole (1) in the rear face of the CMP actuator and the locating pin (2) on the front face of the camshaft.
Align the CMP actuator so the timing mark is in the 6 o'clock position.
Install the CMP actuator (235) and timing chain (208). Align the hole in the face of the CMP actuator with the locating pin on the front face of the camshaft.
Place a straight edge across the front face of the engine block and inspect for proper installation of the CMP actuator and timing chain. With the CMP actuator properly and completely installed onto the front of the camshaft, the timing chain will not protrude beyond the front face of the engine block.
Install a NEW CMP actuator solenoid valve (234). With the CMP actuator properly positioned onto the camshaft, the CMP actuator solenoid valve can be threaded completely into the camshaft using light hand pressure. Tighten by hand until snug.
Inspect the sprockets for proper alignment. The mark on the CMP actuator sprocket (1) should be located in the 6 o'clock position and the mark on the crankshaft sprocket (2) should be located in the 12 o'clock position.
Remove the EN 46330 .
Tighten the CMP actuator solenoid valve. Tighten: Tighten the valve a first pass to 65 N.m (48 lb ft). Tighten the valve a final pass to 90 degrees using J 45059 .
Remove the J 42386-A (1) and bolts.
Install the engine front cover. Refer to «Engine Front Cover Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) .
Install the valve lifters. Refer to «Valve Lifter Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) .
Install the radiator support. Refer to «Radiator Support Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/exterior-body-panels/#bolted-exterior-body-panels-and-closures) .

Remove the automatic transmission. Refer to «Transmission Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/automatic-trans/#automatic-transmission-2ml70-repair-instructions-on-vehicle) .
Remove the flywheel bolts (1).
Remove the flywheel.

Note. The flywheel does not use a locating pin for alignment and will not initially seat against the crankshaft flange or spacer, if applicable, but will be pulled onto the crankshaft by the engine flywheel bolts. This procedure requires a three stage tightening process.

Install the flywheel and bolts (1) to the crankshaft.
Apply threadlock to the threads of the flywheel bolts. Refer to «Adhesives, Fluids, Lubricants, and Sealers»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-specifications__adhesives-fluids-lubricants-and-sealers) for the correct part number.
Tighten the flywheel bolts. Tighten: Tighten the bolts (1-6) a first pass in sequence to 20 N.m (15 lb ft). Tighten the bolts (1-6) a second pass in sequence to 50 N.m (37 lb ft). Tighten the bolts (1-6) a final pass in sequence to 100 N.m (74 lb ft).
Install the automatic transmission. Refer to «Transmission Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/automatic-trans/#automatic-transmission-2ml70-repair-instructions-on-vehicle) .

Engine Replacement

Special Tools

J 21366 Converter Holding Strap
J 41798 Engine Lift Bracket

Disable the high voltage system. Refer to «High Voltage Disabling»(/cadillac/escalade/gmt900-2006-2014/remont/charging-system/#hybrid-energy-storage-system__high-voltage-disabling)
Remove the ground strap nut at the hood stud.
Remove the ground strap from the stud.
Assemble 2 sets of the following: an M6 bolt, 2 each 19.05 mm (0.75 in) flat washers and an M6 nut.
Release the retainer securing the hood strut rod to the hood strut bracket stud.
Remove the hood strut rod (1) from the stud.
Remove the air inlet grille end caps (2), lift the end cap up in order to disengage the retainers.
Have an assistant support the hood.
Remove the hood hinge bolts (3) and set aside.
Raise the hood until the service position notch (1) in the upper hinge is reached.
Install the 2 sets of the M6 bolts to both the left and right side service notches and tighten finger tight.
Lower the hood until the bolts rest against the lower hinge, tighten the bolts to secure the hood. Tighten: Tighten the bolts to 20 N.m (15 lb ft).
The hood is now set in the service position.
Remove the hood latch. Refer to «Hood Primary and Secondary Latch Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/exterior-body-panels/#bolted-exterior-body-panels-and-closures) .
Remove the front end upper tie bar. Refer to «Front End Upper Tie Bar Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/exterior-body-panels/#bolted-exterior-body-panels-and-closures) .
Remove the intake manifold. Refer to «Intake Manifold Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) .
Drain the cooling system. Refer to «Cooling System Draining and Filling (Static Fill)»(/cadillac/escalade/gmt900-2006-2014/remont/cooling-system-mechanical/#engine-cooling-system__cooling-system-draining-and-filling-static) .
Disconnect the A/C lines from the A/C compressor. Refer to «Discharge Hose Replacement (HP2)»(/cadillac/escalade/gmt900-2006-2014/remont/automatic-hvac-system/#heating-ventilation-and-air-conditioning) and «Suction Hose Replacement (W/C69-HP2)»(/cadillac/escalade/gmt900-2006-2014/remont/automatic-hvac-system/#heating-ventilation-and-air-conditioning) .
Disconnect the A/C pressure sensor electrical connector.
Disconnect the cables from the generator control module.
Remove the radiator vent inlet hose (2) from the radiator inlet hose clip (3).
Reposition the radiator vent inlet hose clamp (1) at the air bleed pipe.
Remove the radiator vent inlet hose (2) from the air bleed pipe and reposition.
Reposition the radiator inlet hose clamp (3) at the water pump.
Remove the radiator inlet hose from the water pump.
Reposition the radiator outlet hose clamp (1) at the water pump.
Remove the radiator outlet hose from the water pump.
Remove the heater hoses. Refer to «Heater Inlet Hose Replacement (Pump to Engine-HP2)»(/cadillac/escalade/gmt900-2006-2014/remont/automatic-hvac-system/#heating-ventilation-and-air-conditioning) or «Heater Inlet Hose Replacement (Pump to Heater Core-HP2)»(/cadillac/escalade/gmt900-2006-2014/remont/automatic-hvac-system/#heating-ventilation-and-air-conditioning) .
Disconnect the engine wiring harness electrical connector (3) from the drive motor generator power inverter module cover.
Loosen the drive motor generator power inverter module cover bolt (1).
Remove the drive motor generator power inverter module cover (2).
Remove the engine bracket bolts (2).
Remove the engine bracket (3)
Remove the generator control module 3 phase cable clip nut (1).
Remove the generator control module 3 phase cable clip from the engine bracket (2).
Reposition the generator control module 3 phase cables out of the way.
Remove the right wheelhouse liner. Refer to «Front Wheelhouse Liner Replacement - Right Side»(/cadillac/escalade/gmt900-2006-2014/remont/frames-subframes-crossmembers/#frame-and-underbody) .
Disconnect the engine harness electrical connector (1) from the oil pressure sensor.
Disconnect the engine harness electrical connector (2) from the lifter oil manifold.
Remove the engine ground strap bolt from the rear of the left cylinder head and cowl and reposition.
Remove the engine ground wire from the right cylinder head.
Remove the engine harness clip (1) from the ground stud.
Remove the engine harness ground stud (2) from the engine block.
Remove the engine harness grounds (3) from the engine block.
Disconnect the engine harness electrical connector (4) from the knock sensor.
Disconnect the engine harness electrical connector (1) from the camshaft position (CMP) sensor wire harness.
Disconnect the auxiliary heater water pump electrical connector (1).
Disconnect the engine harness electrical connector (2) from the A/C refrigerant pressure sensor.
Disconnect the engine harness electrical connector (1) from the crankshaft position (CKP) sensor.
Disconnect the engine harness electrical connector (2) from the knock sensor.
Disconnect the engine harness electrical connector (3) from the oil level sensor.
Disconnect the coolant heater cord from the coolant heater, if equipped.
Lower the vehicle.
Remove the ignition coil, as required for proper fit of the J 41798 . Before lifting the engine, refer to «Ignition Coil Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
Remove the 3 phase cable bracket from the right cylinder head.
Install the J 41798 to left and right cylinder heads. Tighten: Tighten the M8 engine lift bracket bolts to 25 N.m (18 lb ft). Tighten the M10 engine lift bracket bolts to 50 N.m (37 lb ft).
Remove the left and right engine mount to frame bolts (1).
Raise the vehicle.
Remove the oil pan skid plate bolts and plate, if equipped.
Place a suitable drain pan under the oil pan drain plug.
Remove the oil pan drain plug (430).
Allow the oil to drain completely.
Reinstall and tighten the oil pan drain plug. Tighten: Tighten the drain plug to 25 N.m (18 lb ft).
Remove the catalytic converter. Refer to «Catalytic Converter Replacement (with Exhaust Flange)»(/cadillac/escalade/gmt900-2006-2014/remont/exhaust/#engine-exhaust-system) or «Catalytic Converter Replacement (with Exhaust Clamp)»(/cadillac/escalade/gmt900-2006-2014/remont/exhaust/#engine-exhaust-system) .
Remove the right flex plate inspection cover bolt (2).
Remove the right flex plate inspection cover (1).
With the aid of an assistant, hold the crank pulley, then remove the flywheel to torque dampener bolts.
Remove the fluid filler tube retaining nut (2) and reposition fill tube aside as necessary.
Remove the transmission bolts/studs (1).
Lower the vehicle.
Remove the fuel/evaporative emission (EVAP) pipe bracket nut from the transmission stud.
Remove the fuel/EVAP pipe bracket from the stud. Reposition the bracket out of the way.
Position and install an engine hoist to the J 41798 .
Install a floor jack under the transmission for support.
Remove the engine from the vehicle.
Install the J 21366 .
Position and install the engine onto an engine stand.
Remove the engine hoist. from the J 41798 .
Remove the J 41798 .
Transfer parts as necessary.

Install the J 41798 . Tighten: Tighten the M8 engine lift bracket bolts to 25 N.m (18 lb ft). Tighten the M10 engine lift bracket bolts to 50 N.m (37 lb ft).
Position and install the engine hoist to the J 41798 .
Remove the engine from the engine stand.
Remove the J 21366 .
Install the engine to the vehicle.
Align and install the engine to the transmission. Raise or lower the transmission as required using the floor jack.
Once aligned and mated together completely lower and remove the engine hoist.
Install the left and right engine mount to frame bolts (1). Tighten: Tighten the bolts to 65 N.m (48 lb ft) starting with the middle bolt then either side bolt.
Remove the floor jack from under the transmission.
Raise the vehicle.
Install the transmission bolts/studs (1). Tighten: Tighten the bolts/studs to 50 N.m (37 lb ft).
Install the fuel/EVAP pipe bracket to the stud.
Install the fuel/evaporative emission (EVAP) pipe bracket nut to the transmission stud. Tighten: Tighten the nut to 18 N.m (13 lb ft).
Install the fluid filler tube bracket to the transmission.
Install the fluid filler tube retaining nut (2). Tighten: Tighten the nut to 18 N.m (13 lb ft).
Align the torque dampener bolt holes to the flywheel bolt holes.
With the aid of an assistant, hold the crank pulley, then install the flywheel to torque dampener bolts. Tighten: Tighten the bolts to 65 N.m (48 lb ft).
Install the right flex plate inspection cover (1).
Install the right flex plate inspection cover bolt (2). Tighten: Tighten the bolt to 12 N.m (106 lb in).
Install the catalytic converter. Refer to «Catalytic Converter Replacement (with Exhaust Flange)»(/cadillac/escalade/gmt900-2006-2014/remont/exhaust/#engine-exhaust-system) or «Catalytic Converter Replacement (with Exhaust Clamp)»(/cadillac/escalade/gmt900-2006-2014/remont/exhaust/#engine-exhaust-system) .
Lower the vehicle.
Remove the J 41798 .
Install the 3 phase cable bracket to the right cylinder head.
Install the ignition coil(s) and spark plug wire(s), as required. Refer to «Ignition Coil Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
Raise the vehicle.
Connect the coolant heater cord to the coolant heater, if equipped.
Connect the engine harness electrical connector (1) to the CKP sensor.
Connect the engine harness electrical connector (2) to the knock sensor.
Connect the engine harness electrical connector (3) to the oil level sensor.
Connect the engine harness electrical connector (2) to the A/C refrigerant pressure sensor.
Connect the auxiliary heater water pump electrical connector (1).
Connect the engine harness electrical connector (1) to the CMP sensor wire harness.
Connect the engine harness electrical connector (4) to the knock sensor.
Position the engine harness grounds (3) to the engine block.
Install the engine harness ground stud (2) to the engine block. Tighten: Tighten the stud to 16 N.m (12 lb ft).
Install the engine harness clip (1) to the ground stud.
Lower the vehicle.
Position the engine ground wire to the right cylinder head.
Install the engine harness stud (1) to the right cylinder head. Tighten: Tighten the stud to 25 N.m (18 lb ft).
Position the engine ground strap to the cylinder head and cowl.
Install the engine ground strap bolt to the rear of the left cylinder head and cowl. Tighten: Tighten the bolt to 16 N.m (12 lb ft).
Install the engine bracket (3) to the ignition coil bracket stud and install nut (1). Tighten: Tighten the nut to 12 N.m (106 lb in).
Raise the vehicle half way.
Working through the wheel opening, install the engine bracket bolts (2). Tighten: Tighten the bolts to 50 N.m (37 lb ft).
Install the right wheelhouse liner. Refer to «Front Wheelhouse Liner Replacement - Right Side»(/cadillac/escalade/gmt900-2006-2014/remont/frames-subframes-crossmembers/#frame-and-underbody) .
Position the generator control module 3 phase cables to the bracket channel.
Install the generator control module 3 phase cable clip to the tab (3) on the engine bracket (2).
Install the generator control module 3 phase cable clip nut (1). Tighten: Tighten the nut to 9 N.m (80 lb in).
Connect the engine harness electrical connector (1) to the oil pressure sensor.
Connect the engine harness electrical connector (2) to the lifter oil manifold.
Install the heater hoses. Refer to «Heater Inlet Hose Replacement (Pump to Engine-HP2)»(/cadillac/escalade/gmt900-2006-2014/remont/automatic-hvac-system/#heating-ventilation-and-air-conditioning) or «Heater Inlet Hose Replacement (Pump to Heater Core-HP2)»(/cadillac/escalade/gmt900-2006-2014/remont/automatic-hvac-system/#heating-ventilation-and-air-conditioning) .
Install the radiator outlet hose to the water pump.
Position the radiator outlet hose clamp (1) at the water pump.
Install the radiator inlet hose to the water pump.
Position the radiator inlet hose clamp (3) at the water pump.
Position and install the radiator vent inlet hose (2) to the air bleed pipe.
Position the radiator vent inlet hose clamp (1) at the air bleed pipe.
Install the radiator vent inlet hose (2) to the radiator inlet hose clip (3).
Position the generator battery jumper to the engine.
Install the intake manifold. Refer to «Intake Manifold Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) .
Connect the cables from the generator control module.
Connect the A/C pressure sensor electrical connector.
Connect the A/C lines from the A/C compressor. Refer to «Discharge Hose Replacement (HP2)»(/cadillac/escalade/gmt900-2006-2014/remont/automatic-hvac-system/#heating-ventilation-and-air-conditioning) and «Suction Hose Replacement (W/C69-HP2)»(/cadillac/escalade/gmt900-2006-2014/remont/automatic-hvac-system/#heating-ventilation-and-air-conditioning) .
For 2500 series vehicles, install the oil pan skid plate and bolts, if equipped. Tighten: Tighten the bolts to 28 N.m (21 lb ft).
For 1500 series vehicles, install the oil pan skid plate and bolts, if equipped. Tighten: Tighten the bolts to 28 N.m (21 lb ft).
Lower the vehicle.
Install the front end upper tie bar. Refer to «Front End Upper Tie Bar Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/exterior-body-panels/#bolted-exterior-body-panels-and-closures) .
Install the hood latch. Refer to «Hood Primary and Secondary Latch Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/exterior-body-panels/#bolted-exterior-body-panels-and-closures) .
With the aid of the assistant raise the hood slightly until the hood hinge bolts can be removed from the service position notch (1).
With the aid of an assistant lower the hood and install the hood hinge bolts (3) to the hood hinges. Tighten: Tighten the bolts to 25 N.m (18 lb ft).
Install the hood strut rod (1) to the hood strut bracket stud.
Install the air inlet grille end caps (2), push down the end cap in order to engage the retainers.
Install the ground strap to the hood stud.
Install the ground strap nut at the hood stud. Tighten: Tighten the nut to 9 N.m (80 lb in).
Refill the cooling system. Refer to «Cooling System Draining and Filling (Static Fill)»(/cadillac/escalade/gmt900-2006-2014/remont/cooling-system-mechanical/#engine-cooling-system__cooling-system-draining-and-filling-static) .
Prelube the engine. Refer to «Engine Prelubing»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) .
Enable the high voltage system. Refer to «High Voltage Enabling»(/cadillac/escalade/gmt900-2006-2014/remont/charging-system/#hybrid-energy-storage-system__high-voltage-enabling) .
Perform the CKP system variation learn procedure. Refer to «Crankshaft Position System Variation Learn»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions__crankshaft-position-system-variation-learn) .
Use the following procedure after the engine is installed in the vehicle: Disable the ignition system. Crank the engine several times. Listen for any unusual noises or evidence that parts are binding. Enable the ignition system. Start the engine and listen for unusual noises. Check the vehicle oil pressure gauge or light and confirm that the engine has acceptable oil pressure. Run the engine speed at about 1,000 RPM until the engine has reached normal operating temperature. Listen for sticking lifters or other unusual noises. Inspect for fuel, oil and/or coolant leaks while the engine is running. Perform a final inspection for the proper oil and coolant levels.

Open the hood.
Remove the oil fill cap.
Raise and suitably support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#general-information__lifting-and-jacking-the-vehicle) .
Place a oil drain pan under the oil pan drain plug.
Remove the oil pan drain plug (430).
Allow the oil to drain completely.
Clean and inspect the oil pan drain plug, replace if necessary.
Clean and inspect the oil pan sealing surface, replace the oil pan if necessary.
Wipe any remaining oil from the drain plug hole and reinstall the oil pan drain plug until snug.
Position the drain pan under the oil filter.
Remove the oil filter.
Ensure that the oil filter gasket is still on the old filter (437) if not, remove the oil filter gasket from the oil pan.

Apply clean engine oil to the NEW oil filter seal.
Install the NEW oil filter (437). Tighten: Tighten the oil filter to 30 N.m (22 lb ft).
Tighten the oil pan drain plug (430). Tighten: Tighten the drain plug to 25 N.m (18 lb ft).
Remove the oil drain pan from under the vehicle.
Lower the vehicle.
Fill the engine with new engine oil. Refer to «Approximate Fluid Capacities»(/cadillac/escalade/gmt900-2006-2014/remont/lubrication-system/#maintenance-and-lubrication__approximate-fluid-capacities) and «Fluid and Lubricant Recommendations (USA and Canada)»(/cadillac/escalade/gmt900-2006-2014/remont/lubrication-system/#maintenance-and-lubrication__fluid-and-lubricant-recommendations-usa-and) .
Start the engine.
Inspect for oil leaks after engine start up.
Turn off the engine and allow the oil a few minutes to drain back into the oil pan.
Remove the oil level indicator from the indicator tube.
Clean off the indicator end of the oil level indicator with a clean paper towel or cloth.
Install the oil level indicator into the oil level indicator tube until the oil level indicator handle contacts the top of the oil level indicator tube.
Again, remove the oil level indicator from the oil level indicator tube keeping the tip of the oil level indicator down.
Check the level of the engine oil on the oil level indicator.
If necessary, adjust the oil level by adding or draining oil.
Check for oil leaks.
Close the hood.

Draining Fluids and Oil Filter Removal

Remove the oil pan drain plug (430) and O-ring (429).
Remove the engine oil filter (437).
Remove the right side engine block coolant drain hole plug (146).
Remove the left side engine block coolant heater (114) and washer (115).

Crankshaft Balancer Removal

Special Tools

J 41816-A: Crankshaft Balancer Remover
J 41816-2: Crankshaft End Protector
J 42386-A: Flywheel Holding Tool

For equivalent regional tools, refer to Special Tools

Install the J 42386-A: tool (1) and bolts. Use 1 M10 - 1.5 x 120 mm and 1 M10 - 1.5 x 45 mm bolt for proper tool operation and tighten the J 42386-A: tool bolts to 50 N.m (37 lb ft).
Remove the crankshaft balancer bolt (139). Do not discard the crankshaft balancer bolt. The balancer bolt will be used during the balancer installation procedure.
Use the J 41816-A: remover (1) and the J 41816-2: protector (2) in order to remove the crankshaft balancer.
Remove the balancer (138).
Remove the J 42386-A: tool (1) and bolts.

Automatic Transmission Flex Plate Removal

Remove the engine flex plate bolts.
Remove the flex plate.

Oil Level Indicator and Tube Removal

Remove the oil level indicator (418) from the tube.
Remove the oil level indicator tube bolt (419).
Remove the oil level indicator tube (420) from the engine block.
Remove the O-ring (421) from the tube, as required.

Exhaust Manifold Removal - Left Side

Remove the spark plug wires from the spark plugs.
Remove the exhaust manifold, bolts, and gasket.
Discard the gasket.
Remove the heat shield (603) and bolts (604) from the manifold (600), as required.
Remove the studs (605), as required.

Exhaust Manifold Removal - Right Side

Remove the spark plug wires from the spark plugs.
Remove the exhaust manifold, bolts, and gasket.
Discard the gasket.
Remove the heat shield (603) and bolts (604) from the manifold (600), as required.
Remove the studs (605), as required.

Water Pump Removal

Remove the water pump bolts (301).
Remove the water pump (300) and gaskets (306).
Discard the water pump gaskets.

Throttle Body Assembly Removal

Remove the electrical wire harness connectors from the throttle body.
Remove the throttle body nuts (507) and bolts (538).
Remove the throttle body (508).
Remove the throttle body gasket (509).
Discard the gasket.

Fuel Rail and Injectors Removal

Remove the fuel rail stop bracket and bolt, as required.
Remove the evaporative emission (EVAP) canister purge solenoid valve (730) and tubes (729, 735).
Remove the fuel rail bolts (511).
Remove the fuel rail (510) with injectors. Lift evenly on both sides of the fuel rail until all the injectors have left their bores.
Remove the fuel injector retainers (521) and fuel injectors (533), as required.
Remove the O-rings (532, 534) from the injectors, as required.

Intake Manifold Removal

Remove the positive crankcase ventilation (PCV) hose - dirty air (716).
Remove the manifold absolute pressure (MAP) sensor (714) and retainer (736), as required.
Remove the O-ring (715) from the sensor, as required.
Remove the intake manifold bolts (512).
Remove the intake manifold (500) with gaskets.
Remove the intake manifold gaskets (514).
Discard the intake manifold gaskets.

Engine Coolant Air Bleed Pipe and Hole Cover Removal

Remove the engine coolant air bleed pipe bolts (309).
Remove the pipe (307) with seals (308).
Remove the seals (308) from the pipe and covers.
Discard the seals.

Valve Lifter Oil Manifold Removal

Do not lift the manifold by the electrical lead frame.
Remove the valve lifter oil manifold bolts (506).
Remove the valve lifter oil manifold (451).
Identify the 8 gasket retaining strap locations (1-8).
Using a wire-cutter type tool, cut the 8 retaining straps.
Remove the outer gasket (556) from the manifold.

Valve Lifter Oil Filter Removal

Remove the oil pressure sensor (706) and washer (707).
Remove the oil filter (452).
Inspect the O-ring (454) for cuts or damage. If the filter is plugged or the O-ring is cut or damaged, replace the filter and O-ring as an assembly.

Valve Rocker Arm Cover Removal - Left Side

Remove the spark plug wires (724).
Remove the ignition coil bracket studs (720).
Remove the ignition coil and bracket assembly (719).
Disconnect the ignition coil electrical connectors.
Remove the bolts (723), coils (722), and wire harness (721) from the bracket (719), as required.
Remove the valve rocker arm cover bolts and cover.
If the valve rocker arm cover grommets are cracked or damaged, replace the valve rocker arm cover bolts. The grommet is serviced with the rocker arm cover bolt.
Remove and discard the valve rocker arm cover gasket (504) from the cover.

Valve Rocker Arm Cover Removal - Right Side

Remove the spark plug wires (724).
Remove the ignition coil bracket studs (720).
Remove the ignition coil and bracket assembly (719).
Disconnect the ignition coil electrical connectors.
Remove the bolts (723), coils (722), and wire harness (721) from the bracket (719), as required.
Remove the valve rocker arm cover bolts and cover.
If the valve rocker arm cover grommets are cracked or damaged, replace the valve rocker arm cover bolts. The grommet is serviced with the rocker arm cover bolt.
Remove and discard the valve rocker arm cover gasket (504) from the cover.
Remove the oil fill cap (424) from the oil fill tube (423).
Remove the oil fill tube, as required.
Discard the oil fill tube.

Valve Rocker Arm and Push Rod Removal

Remove the valve rocker arm bolts.
Remove the valve rocker arms.
Remove the valve rocker arm pivot support.
Remove the pushrods.

Cylinder Head Removal - Left Side

Remove the cylinder head bolts (220, 221).
Remove the cylinder head (218).
Remove the gasket (217) and locating pins (230).
Discard the gasket and cylinder head bolts.

Cylinder Head Removal - Right Side

Remove the cylinder head bolts (220, 221).
Remove the cylinder head (218).
Remove the gasket (217) and locating pins (230).
Discard the gasket and cylinder head bolts.

Valve Lifter Removal

Remove the bolts (211).
Remove the guides (210) with lifters. Note the installed position of the guides. The notched area of the guide is to align with the locating tab of the block.
Remove the valve lifters (209, 219) from the guide (210).
Organize or mark the components so they can be installed in the same location from which they were removed. The active fuel management lifters (4) are installed into the guide by aligning the notched area of the guide (1) with the raised surface on the side of the lifter (2). Refer to «Separating Parts»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-description-and-operation__separating-parts) .

Oil Filter Removal

Remove the oil filter (437).
Remove the oil filter fitting (438).

Oil Pan Removal

Remove the left closeout cover and bolt.
Remove the right closeout cover and bolt.
Remove the oil indicator switch from the oil pan, if applicable, and if service is required.
Remove the oil pan bolts.
Remove the oil pan.
Drill (2) out the oil pan gasket retaining rivets (1), if required.
Remove the gasket (426) from the pan.
Discard the gasket and rivets.

Engine Front Cover Removal

Remove the front cover bolts (501).
Remove the front cover (502) and gasket (503).
Discard the front cover gasket.
Remove the camshaft position (CMP) sensor wire harness (737) and bolts (738).
Remove the CMP sensor (703).
Remove the O-ring (704) from the sensor, as required.
Remove the CMP actuator magnet (752), bolts (751), and gasket (753).
Remove the oil seal (140).

Crankshaft Rear Oil Seal Housing Removal

Remove the rear oil seal housing bolts (517).
Remove the housing (518) and gasket (519).
Remove the rear oil seal (141).

Oil Pump, Screen and Crankshaft Oil Deflector Removal

Remove the oil pump screen bolt (2) and nuts (3).
Remove the oil pump screen (4) with O-ring seal (1).
Remove the O-ring seal from the pump screen.
Discard the O-ring seal.
Remove the remaining crankshaft oil deflector nuts.
Remove the crankshaft oil deflector.
Remove the oil pump bolts (411).
Remove the oil pump (413).

Timing Chain, Crankshaft Sprocket, Camshaft Position Actuator, and Solenoid Valve Removal

Special Tools

J 8433: Two Jaw Puller
J 41558: Crankshaft Sprocket Remover
J 41816-2: Crankshaft End Protector
J 42386-A: Flywheel Holding Tool

For equivalent regional tools, refer to Special Tools .

Temporarily install the automatic transmission flex plate and bolts. Refer to «Automatic Transmission Flex Plate Installation»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-repair-instructions-off-vehicle-3-of-3__automatic-transmission-flex-plate-installation) .
Install the J 42386-A: tool (1) and bolts. Use 1 M10 - 1.5 x 120 mm and 1 M10 - 1.5 x 45 mm bolt for proper tool operation. Tighten the J 42386-A: tool bolts to 50 N.m (37 lb ft).
Remove the CMP actuator solenoid valve (234).
Discard the solenoid valve.
Loosen and separate the CMP actuator and timing chain from the camshaft. Position fingers behind the actuator sprocket and pull the actuator away from the front of the camshaft. Never pull on the reluctor wheel when attempting to remove the actuator.
Remove the CMP actuator (235) and timing chain (208).
Insert a tie strap (1) through the center of the actuator and over the reluctor wheel.
Remove the bolts (231) and timing chain tensioner (232).
Use the J 41816-2: protector (1), the J 41558: remover (2), bolts (3), and the J 8433: puller (4) in order to remove the crankshaft sprocket.
Remove the crankshaft sprocket (207).
Remove the crankshaft sprocket key, as required.
Remove the flex plate and bolts. Refer to «Automatic Transmission Flex Plate Removal»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__automatic-transmission-flex-plate-removal) .
Remove the J 42386-A: tool and bolts.

Camshaft Removal

Remove the camshaft retainer bolts (204) and retainer (203).
Remove the camshaft. Install the camshaft sprocket bolt into the camshaft front bolt hole. Using the bolt as a handle, carefully rotate and pull the camshaft out of the engine block. Remove the bolt from the front of the camshaft.

Piston, Connecting Rod, and Bearing Removal

Special Tools

J 24270: Cylinder Bore Ridge Reamer
J 41556: Connecting Rod Guide

For equivalent regional tools, refer to Special Tools .

Use the J 24270: ridge reamer in order to remove the cylinder bore ring ridge, if required. Turn the crankshaft until the piston is at the bottom of the stroke. Place a cloth on top of the piston. Use the J 24270: ridge reamer , or equivalent, in order to remove a cylinder ring ridge. Turn the crankshaft so the piston is at the top of the stroke. Remove the cloth. Remove the cutting debris from the cylinder and piston.
Using a paint stick or etching tool, place matchmarks or numbers on the connecting rods and the connecting rod caps. The connecting rods and caps MUST be assembled to their original position and direction. A stamping mark on the side of the connecting rod, at the crankshaft journal, may affect component geometry. Mark the top of the piston to the specific cylinder bore.
Remove the connecting rod bolts (102), cap (103) and bearing (104).
Install the J 41556: guide to the connecting rod.
Using a hammer, tap lightly on the end of the J 41556: guide in order to remove the piston and connecting rod assembly from the cylinder bore.
Remove the J 41556: guide.
Upon removal of the piston and connecting rod assembly, assemble the connecting rod cap and bolts onto the matching connecting rod.

Crankshaft and Bearing Removal

Special Tools

J 6125-1B: Slide Hammer
J 41818: Crankshaft Bearing Cap Remover

For equivalent regional tools, refer to Special Tools .

Remove the crankshaft position (CKP) sensor bolt (702).
Remove the CKP sensor (701).
Remove the O-ring (750) from the sensor, as required.
Remove and discard the crankshaft bearing cap M8 bolts (127).
Remove and discard the bearing cap M10 bolts (129) and studs (128).
Install the J 41818: remover (2). Tighten the J 41818: remover (2) bolts to 11 N.m (100 lb in).
Install the J 6125-1B: hammer (1) to the J 41818: remover (2) in order to remove the crankshaft bearing caps.
Remove the bearing caps.
Remove the crankshaft.
Lay the crankshaft onto 2 wooden V-blocks or other protective surface.
Remove the crankshaft bearings from the bearing caps and the engine block.
Mark, sort, or organize the crankshaft bearings so they may be installed to their original position and location. Refer to «Separating Parts»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-description-and-operation__separating-parts) .

Engine Block Plug Removal

Remove the engine block coolant heater (114) and seal (115).
Remove the engine block right rear coolant drain hole plug and seal.
Remove the engine block left front oil gallery plug (116) and seal (117).
Remove the engine block left rear oil gallery plug (112) and seal (113). If the block plug and coolant heater sealing washers are not damaged, they may be used during assembly.
Remove the engine block rear oil gallery plug (111) and seal.
Inspect the O-ring seal of the rear oil gallery plug. If the O-ring seal is not cut or damaged, the plug and O-ring seal may be used during assembly.
Remove the engine block front oil gallery plug (101).
Remove the left side knock sensor (718) and bolt (739).
Remove the right side knock sensor (718) and bolt (739).

Engine Block Cleaning and Inspection

Special Tools

J 8087: Cylinder Bore Gauge
J 42385-100: Head/Main Bolt Thread Repair Kit

For equivalent regional tools, refer to Special Tools .

Scheme 20

Scheme 20: Cleaning Procedure

CAUTION

Do not use a caustic solution to clean the aluminum engine block.

Note. When cleaning the engine block in a thermal type oven, do not exceed 232°C (450°F).

Clean the following components

Remove all sludge, dirt, or debris using a cleaning solvent or thermal type oven. Refer to «Cleanliness and Care»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__cleanliness-and-care) .
Gasket surfaces - Refer to «Replacing Engine Gaskets»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-description-and-operation) .
Coolant passages
Oil galleries
Main bearing caps
Cylinder head bolt holes to remove threadlocking material Thread repair tool J 42385-107 may be used to clean the threads of any residual threadlocking material.

Inspection Procedure

Inspect the following components: Cylinder walls for excessive scratches, gouging, or ring ridge Cylinder bores for excessive ring ridge at the top of the cylinder Coolant jacket for cracks Valve lifter bores for excessive scoring or wear Crankshaft bearing webs for cracks Gasket sealing surfaces for excessive scratches or gouging - Refer to «Replacing Engine Gaskets»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-description-and-operation) . Oil galleries for restrictions Threaded bolt holes for damaged threads Cylinder bores for excessive ring ridge at the top of the cylinder
Measure the cylinder bores for an oversize condition.

Measuring the Cylinder for Oversize

Adjust the micrometer to a dimension slightly smaller than the bore size. Refer to «Engine Mechanical Specifications»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__engine-mechanical-specifications) .
Insert the J 8087: gauge into the micrometer and zero the bore gauge dial.
Use the J 8087: gauge and measure the cylinder bore for oversize. Slide the bore gauge up and down throughout the length of the cylinder bore. Measure the bore, both parallel and perpendicular to the centerline of the crankshaft, at the top, center, and bottom of the bore. A cylinder bore that exceeds the maximum diameter must be serviced with an oversized piston. Refer to «Engine Mechanical Specifications»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__engine-mechanical-specifications) .

Boring Procedure

Measure all pistons with a micrometer to determine the cylinder bore diameter.
Before you use any type of boring bar, use a fine file and clean the top of the cylinder block, removing any dirt or burrs. If you do not check the cylinder block, the boring bar may be improperly positioned or tilted and the cylinder bore could be bored at an incorrect angle.
Carefully follow the instructions furnished by the manufacturer regarding use of the equipment.
When you bore the cylinders, ensure all the crankshaft bearing caps are in place. Tighten the crankshaft bearing caps to the proper torque in order to avoid distortion of the cylinder bores during final assembly.
When you take the final cut with a boring bar, leave 0.03 mm (0.001 in) on the cylinder bore diameter for the finish honing and fit of the piston.

Honing Procedure

When honing the cylinders, follow the manufacturer's recommendations for equipment use, cleaning, and lubrication. Use only clean, sharp stones of the proper grade for the amount of material you remove. Dull, dirty stones cut unevenly and generate excessive heat. Do not hone to final clearance with a coarse or medium-grade stone. Leave sufficient metal so that all stone marks may be removed with fine-grade stones. Perform final honing with a fine-grade stone, honing the cylinder to the proper clearance.
During the honing operation, thoroughly clean the cylinder bore. Repeatedly check the cylinder bore for fit with the selected piston. All measurements of the piston or the cylinder bore should be made with the components at normal room temperature.
When honing a cylinder for fit to an oversize piston, first perform the preliminary honing with a 100-grit stone.
Perform final cylinder honing with a 240-grit stone and obtain a 45 degree cross hatch pattern. A 240-grit stone is preferred for final honing. If a 240-grit stone is not available, a 220-grit stone may be used as a substitute.
The finish marks should be clean but not sharp. The finish marks should also be free from imbedded particles and torn or folded metal.
By measuring the selected piston at the sizing point and by adding the average of the clearance specification, you can determine the final cylinder honing dimension required.
After final honing and before the piston is checked for fit, clean the cylinder bores with hot water and detergent. Scrub the bores with a stiff bristle brush and rinse the bores thoroughly with hot water. Do not allow any abrasive material to remain in the cylinder bores. This abrasive material may cause premature wear of the new piston rings and the cylinder bores. Abrasive material will also contaminate the engine oil and may cause premature wear of the bearings. After washing the cylinder bore, dry the bore with a clean rag.
Perform final measurements of the piston and the cylinder bore.
Permanently mark the top of the piston for the specific cylinder to which it has been fitted.
Apply clean engine oil to each cylinder bore in order to prevent rusting.

Scheme 21

Scheme 21: Deglazing Procedure

Using a ball type or self centering honing tool, deglaze the cylinder bore lightly. Deglazing should be done only to remove any deposits that may have formed. Use a 240-grit stone of silicone carbide, or equivalent, material when performing the deglazing procedure.

A 240-grit stone is preferred for final honing. If a 240-grit stone is not available, a 220-grit stone may be used as a substitute.

Crankshaft and Bearing Cleaning and Inspection

Special Tools

J 7872: Magnetic Base Dial Indicator Set
J 43690: Rod Bearing Checking Tool
J 43690-100: Rod Bearing Checking Tool - Adapter Kit

For equivalent regional tools, refer to Special Tools .

Cleaning Procedure

Clean the crankshaft with solvent.
Thoroughly clean all oil passages (2) and inspect for restrictions or burrs.
Dry the crankshaft with compressed air.

Inspect the CKP reluctor ring teeth (1) for damage.
Inspect the crankshaft journals for wear. Journals should be smooth (1) with no signs of scoring, wear, or damage.
Inspect the crankshaft journals for grooves or scoring (2).
Inspect the crankshaft journals for scratches or wear (3).
Inspect the crankshaft journals for pitting or imbedded bearing material (4).
Inspect the crankshaft rear oil seal surface (5) for grooves or scoring.
Inspect the crankshaft key (122), keyway (1), and threaded hole (2) for damage.
Measure the connecting rod journals for out-of-round and taper.
Measure the crankshaft thrust wall width. A crankshaft with a thrust wall width in excess of 26.2 mm (1.0315 in) (a) must be replaced.
Measure the crankshaft runout. Use wooden V-blocks or a fixture to support the crankshaft on the front and rear journals.
Use the J 7872: set in order to measure the crankshaft runout at the front and rear intermediate journals.
Use the J 7872: set in order to measure the runout of the crankshaft rear flange.
Use the J 7872: set in order to measure the runout of the crankshaft position reluctor ring. Reluctor ring runout should be measured 1.0 mm (0.04 in) below the ring teeth. If the reluctor ring has runout in excess of 0.7 mm (0.028 in), replace the crankshaft.
Inspect crankshaft bearings for craters or pockets. Flattened sections on the bearing halves also indicate fatigue.
Inspect the crankshaft bearings for excessive scoring or discoloration.
Inspect the crankshaft bearings for dirt or debris imbedded into the bearing material.
Inspect the crankshaft bearings for improper seating, indicated by bright, polished sections of the bearing. If the lower half of the bearing is worn or damaged, both upper and lower halves should be replaced. Generally, if the lower half is suitable for use, the upper half should also be suitable for use.

Measuring Main Bearing Clearance - Gaging Plastic Method

Remove the bearing caps, bearing half, and bolts. Refer to «Crankshaft and Bearing Removal»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__crankshaft-and-bearing-removal) .
Install gaging plastic onto the crankshaft journal. Install the gaging plastic the full width of the crankshaft bearing journal.
Install the bearing caps, bearing half, and bolts. Refer to «Crankshaft and Bearing Installation»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) .
Remove the bearing caps, bearing half, and bolts. Refer to «Crankshaft and Bearing Removal»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__crankshaft-and-bearing-removal) .
Using the scale supplied with the plastic gaging kit, measure the gaging plastic at its widest area. If the gaging plastic shows irregularity in the journal, exceeding 0.025 mm (0.001 in), remove the crankshaft and measure the journal with a micrometer. If clearance cannot be brought to specifications, replace the crankshaft or engine block as required. Refer to «Engine Mechanical Specifications»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__engine-mechanical-specifications) .

Measuring Connecting Rod Bearing Clearance - Gaging Plastic Method

Remove the bearing cap, bearing half, and bolts. Refer to «Piston, Connecting Rod, and Bearing Removal»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__piston-connecting-rod-and-bearing-removal) .
Install the gaging plastic onto the connecting rod bearing journal. Install the gaging plastic the full width of the journal.
Install the bearing cap, bearing half, and bolts. Refer to «Piston, Connecting Rod, and Bearing Installation»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__piston-connecting-rod-and-bearing-installation) .
Remove the bearing cap, bearing half, and bolts. Refer to «Piston, Connecting Rod, and Bearing Removal»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__piston-connecting-rod-and-bearing-removal) .
Using the scale supplied with the plastic gaging kit, measure the gaging plastic at its widest area. Refer to «Engine Mechanical Specifications»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__engine-mechanical-specifications) .

Measuring Connecting Rod Bearing Clearance - Using J 43690/J 43690-100

J 43690: tool has been developed as a more accurate method to measure connecting rod bearing clearances. The instructions below provide an overview of tool set-up and usage. For more detailed information, refer to the tool instruction sheets supplied by the tool manufacturer.

Scheme 22

Scheme 22: Measuring Connecting Rod Bearing Clearance - Using J 43690/J 43690-100

Rod Bearing Checking Tool

J 43690-20 Swivel Base (1)
J 43690-19 Dial Indicator (2)
J 43690-2 Base (3)
J 43690-5, J 43690-6 Handle (4)
J 43690-10, J 43690-11 Foot (5)
280307 Screw (6)
J 43690-1 Pivot Arm Assembly (7)
J 43690-3, J 43690-7, J 43690-8 Screws (8)
280319 Screw (9)
280311 Screw (10)
J 43690-17, J 43690-18 Adapter (11)
280310 Pin (12)

Scheme 23

Rod Bearing Checking Tool - Adapter Kit

J 43690-104 Spacer (1)
J 43690-105 Retainer Plate (2)
505478 Bolt (3)
511341 Bolt (4)
J 43690-106 Retainer Plate (5)
J 43690-107 Cap (6)
J 43690-102 Foot (7)
J 43690-101 Pivot Arm Assembly (8)
J 43690-103 Adapter (9)
505439 Adapter (10)

Rotate the crankshaft until the journal/connecting rod to be measured is in the 12 o'clock position.
Remove a bearing cap and bolts (1).
Remove the bearing half (2).
Insert a piece of paper card stock onto the crankshaft journal.
Install the bearing half (2) and cap and bolts (1). Refer to «Fastener Tightening Specifications»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__fastener-tightening-specifications) .
Install the following: J 43690-2 (5) J 43690-3 (4) J 43690-101 (2) 280310 (3) J 43690-5 (1)
Install the swivel base (1) and dial indicator (2).
Adjust per the manufacturers instructions and measure the connecting rod bearing clearance. A connecting rod with a clearance in excess of 0.076 mm (0.003 in) is considered excessive. Service components, as required.

Crankshaft Balancer Cleaning and Inspection

Clean the crankshaft balancer in solvent.
Clean the belt grooves of all dirt or debris with a wire brush.
Dry the crankshaft balancer with compressed air.
Inspect the crankshaft balancer for the following conditions: Worn, grooved, or damaged hub seal surface A crankshaft balancer hub seal surface with excessive scoring, grooves, rust or other damage must be replaced. Minor imperfections on the hub seal surface may be removed with polishing compound or fine grade emery cloth. IMPORTANT: In order for the belt to track properly, the belt grooves should be free of all dirt or debris. Dirty or damaged belt grooves The balancer belt grooves should be free of any nicks, gouges, or other damage that may not allow the belt to track properly. Minor imperfections may be removed with a fine file. Worn, chunking, or deteriorated rubber between the hub and pulley

Automatic Transmission Flex Plate Cleaning and Inspection

Clean the flex plate in solvent.
Dry the flex plate with compressed air.
Inspect the flex plate for the following conditions: Damaged ring gear teeth (1) Stress cracks around the flex plate-to-crankshaft bolt hole locations (2) NOTE: Do not attempt to repair the welded areas that retain the ring gear to the flex plate. Install a new flex plate. Welded areas (3) that retain the ring gear onto the flex plate for cracking

Piston and Connecting Rod Disassemble

Remove the connecting rod bearings from the rod and cap.
Using piston ring pliers, remove the piston rings from the piston.
Rotate the piston pin retainers until the ring end gaps are positioned in the cutout area (1) of the pin bore.
Remove the retainers starting in the cutout area of the pin bore.
Remove the pin from the piston and connecting rod.
The piston and pin are a matched set and are not to be serviced separately. Mark, sort, or organize the piston and the matching piston pin.

Piston, Pin, and Piston Rings

Clean the varnish and carbon from the piston (107) using cleaning solvent.
Dry the components with compressed air.
Clean the piston ring grooves with a suitable ring groove cleaning tool.
Clean the oil lubrication holes and slots.
Inspect the piston for the following conditions: Cracks in the piston ring lands, the piston skirt, or pin bosses Piston ring grooves for nicks, burrs, or warpage which may cause the piston ring to bind MINOR imperfections may be removed from the piston with a fine file. Eroded areas at the top of the piston (1) Scuffed or damaged skirts (2) Scoring to the piston pin bore (3) or piston pin
Insert the edge of the piston ring into the piston ring groove. Roll the piston ring completely around the piston. If binding is caused by a distorted ring groove, MINOR imperfections may be removed with a fine file. If binding is caused by a distorted piston ring, replace the rings, as required.
Measure the piston ring side clearance with a feeler gauge. If side clearance is not within specifications, try another piston ring. If the proper ring-to-groove clearance cannot be obtained, replace the piston and pin as an assembly. Refer to «Engine Mechanical Specifications»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__engine-mechanical-specifications) .
To determine piston pin-to-bore clearance, use a micrometer and measure the piston pin outside diameter (OD).
To determine the piston pin-to-bore clearance, use an inside micrometer and measure the piston pin bore inside diameter (ID).
Subtract the piston pin OD measurement from the piston pin bore ID measurement to determine pin-to-bore clearance. Refer to «Engine Mechanical Specifications»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__engine-mechanical-specifications) .

Measuring Piston Ring End Gap

Place the piston ring into the cylinder bore 6.5 mm (0.25 in) below the top of the ring travel area. Both rings should be installed with the orientation marks facing the top of the piston.
Insert a feeler gauge and measure the piston ring end gap. Refer to «Engine Mechanical Specifications»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__engine-mechanical-specifications) .

Connecting Rod and Bearings

Clean the connecting rod (105) and cap (103) in solvent.
Dry the components with compressed air.
Inspect the connecting rod for the following conditions: Twisting (1) Proper fit of the connecting rod and cap mating surfaces (2) Nicks or gouges in the bearing bore (3) Damage to the bearing locating slots (4)
Measure the connecting rod bearing bore for an out-of-round condition. Refer to «Engine Mechanical Specifications»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__engine-mechanical-specifications) .
To determine piston pin-to-connecting rod bore clearance, use a micrometer and measure the piston pin OD.
To determine the piston pin-to-connecting rod bore clearance, use a micrometer and measure the connecting rod pin bore (1) ID.
Subtract the piston pin OD measurement from the connecting rod pin bore ID measurement to determine pin-to-bore clearance. Refer to «Engine Mechanical Specifications»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__engine-mechanical-specifications) .
Inspect the connecting rod bearings for craters or pockets. Flattened sections on the bearing halves indicate fatigue.
Inspect the connecting rod bearings for excessive scoring or discoloration.
Inspect the connecting rod bearings for dirt or debris imbedded into the bearing material.
Inspect the connecting rod bearings for improper seating indicated by bright, polished sections of the bearing surface.
To determine the piston pin-to-bore clearance, use an inside micrometer and measure the piston pin bore ID.
Subtract the piston pin OD measurement from the piston pin bore ID measurement to determine pin-to-bore clearance. Refer to «Engine Mechanical Specifications»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__engine-mechanical-specifications) .

Piston and Connecting Rod Assemble

Install the retainer. The retainer should be seated in the groove of the pin bore.
The mark (1) on the top of the piston and the large set of tabs (2) on the side of the connecting rod should be facing the same direction.
Install the piston pin to the piston and connecting rod.
Install the retainers. The retainers should be seated in the groove of the pin bore.
Using piston ring pliers, install the piston rings onto the piston. The top compression ring has a shinier finish than the lower compression ring. The dimple or mark on the piston ring should face the top of the piston. If no dimple or mark can be found on the top compression ring, it may be installed in either direction.
Position the oil control ring end gaps 180 degrees opposite each other.
Position the compression ring end gaps 180 degrees opposite each other.
Install the connecting rod bearings to the rod and cap.

J 33049: Camshaft Bearing Service Set

For equivalent regional tools, refer to Special Tools .

Removal

Prior to bearing removal, inspect the camshaft bearings for loose fit in the engine block bearing bores. Refer to «Camshaft and Bearings Cleaning and Inspection»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__camshaft-and-bearings-cleaning-and-inspection) .
Repair or replace the components, as required.
Select the expanding driver (4-8) and washer (2 or 3) from the J 33049: service set.
Assemble the tool.
Insert the tool through the front of the engine block and into the bearing.
Tighten the expander assembly (15) nut until snug.
Push the guide cone (1) into the front camshaft bearing in order to align the tool.
Drive the bearing from the block bore.
Repeat the above procedures in order to remove the remaining bearings.

Tool Usage Information

Bearing, Expander, and Expander Driver Information

The tool consists of a guide cone (1), driving washers (2 or 3), expander bearing drivers (4-8), driver bars (9 or 10), expander jaws (11), expander sleeve (12), expander cone (13), expander shaft (14), and expander assembly (15).
Expander assembly (15) is used as a driver for the bearing when inside diameter is 28.575-37.465 mm (1.125-1.475 in) and is used with the small washer.
Expander bearing driver number 1 inside diameter is 37.465-43.18 mm (1.475-1.7 in) and is used with the expander assembly (15) and the small washer.
Expander bearing driver number 2 inside diameter is 43.18-48.895 mm (1.7-1.925 in) and is used with the expander assembly (15) and the large washer.
Expander bearing driver number 3 inside diameter is 48.895-54.61 mm (1.925-2.15 in) and is used with the expander assembly (15) and the large washer.
Expander bearing driver number 4 inside diameter is 54.61-60.325 mm (2.150-2.375 in) and is used with expander assembly (15) and the large washer.
Expander bearing driver number 5 inside diameter is 60.325-68.326 mm (2.375-2.69 in) and is used with expander assembly (15) and the large washer.

Tool Assembly and Operation

Select the proper expanding driver and washer from the expanding driver and washer information.
Place the expanding driver onto the expander assembly.
Ensure the separation lines between the segments of the expanding driver align with the separation lines of the expander assembly.
With the small end of the cone facing the driver assembly, place the guide cone over the driving bar.
Place the driving washer over the threaded portion of the expander assembly.
Screw the expander assembly, with driving washer, onto the driving bar. For removal of the inner bearings, it may be necessary to install the driver bar extension.
Insert the tool (1) into an inner camshaft bearing and tighten until snug. Operate the tool from the front or rear of the engine block. On some engine blocks, the nut on the expander assembly is inaccessible, except from either end. In this case, you must use a socket and extension to enlarge and reduce the expander assembly.
Slide the nylon cone (2) into the front or rear camshaft bearing. This will properly align the tool.
Drive the bearing out of or into the engine block.
Repeat the procedure for the additional inner bearings.
For the end bearings, front, position number 1, and the rear, position number 5, remove the nylon cone and driver bar extension.
Drive the bearings out of or into the engine block.

Camshaft and Bearings Cleaning and Inspection

Special Tools

J 7872: Magnetic Base Dial Indicator Set
J 8520: Camshaft Lobe Lift Indicator

For equivalent regional tools, refer to Special Tools .

Clean the components in solvent.
Dry the components with compressed air.
Inspect the camshaft bearing journals (1) for scoring or excessive wear.
Inspect the camshaft valve lifter lobes (2) for scoring or excessive wear.
Inspect the camshaft position (CMP) actuator oil passages (3) for restrictions.
Inspect the threaded bolt hole (4) in the front of the camshaft for damaged threads or debris.
Inspect the camshaft sprocket pin (204) for damage.
Inspect the camshaft retainer plate for wear or a damaged sealing gasket. If the camshaft retainer plate sealing gasket is not cut or damaged, it may be used again.
Inspect the camshaft bearings for the following: Excessive wear, evidence of galling, pitting, scoring, or embedded debris. The appearance of the bearing material being different shades of gray are considered normal, and are not guideline for bearing replacement. Measure the bearing inside diameter (ID) as required for an over-sized condition. Refer to «Engine Mechanical Specifications»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__engine-mechanical-specifications) . Proper fit in the engine block. Camshaft bearings have an interference fit to the engine block and should not be loose in the engine block bearing bores. The oil lubrication feed hole in the bearing must be in alignment with the drilled out passage in the block. The oil lubrication feed hole is not plugged by debris. Bearings with excessive wear or scoring must be replaced. Bearings with excessive wear, galling, pitting, scoring, or embedded debris must be replaced.
Using a micrometer, measure the camshaft journals for wear and out-of-round. Refer to «Engine Mechanical Specifications»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__engine-mechanical-specifications) . If the camshaft bearing journals are out-of-round, replace the camshaft. If the camshaft bearing journal diameter is not within specification, replace the camshaft.
Using a micrometer, measure the camshaft lobes for wear. Refer to «Engine Mechanical Specifications»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__engine-mechanical-specifications) .
Measure the camshaft runout. Mount the camshaft in wooden V-blocks or between centers on a fixture. Using the J 7872: dial indicator set , measure the runout of the intermediate camshaft bearing journals. If camshaft runout is not within specification, the camshaft is bent and should be replaced. Refer to «Engine Mechanical Specifications»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__engine-mechanical-specifications) .

Measuring Camshaft Lobe Lift

Using the J 8520: lobe lift indicator, measure camshaft lobe lift.
Remove the valve rocker arms and bolts.
Install the dial indicator mounting stud into the valve rocker arm bolt hole.
Assemble the components of the J 8520: lobe lift indicator and position onto the stud.
Position the shaft of the dial indicator onto the end of the pushrod.
Rotate the face of the dial indicator to zero.
Slowly rotate the crankshaft clockwise, until the dial indicator obtains its highest and lowest readings.
Compare the total to specifications. Refer to «Engine Mechanical Specifications»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__engine-mechanical-specifications) . The total lobe lift is the difference between the highest and lowest reading.

J 33049: Camshaft Bearing Service Set

Installation

Measure the engine block camshaft bearing bores (1-5) in order to identify the correct OD size bearing for each position. Refer to «Engine Mechanical Specifications»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__engine-mechanical-specifications) .
Select the expanding driver (4-8) and washer (2 or 3) from the J 33049: camshaft bearing service set. Refer to «Camshaft Bearing Removal»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) .
Assemble the tool.
Insert the tool (1) through the front or rear of the engine block and into the bearing. For installation of inner bearings, it may be necessary to install the driver bar extension.
Tighten the expander assembly nut until snug.
Push the guide cone (2) into the front camshaft bearing in order to align the tool.
Position the camshaft bearing with oil feed hole (1) in alignment with drilled oil passage in block bore (2).
Drive the bearing into the block bore. During installation, ensure the bearing is installed straight.
Remove J 33049: service set, inspect bearing to confirm the oil hole in the bearing is in alignment with the drilled oil passage in the block bore.
Repeat procedure to install the remaining bearings into the block.

Camshaft Timing Chain and Sprocket Cleaning and Inspection

Clean the components with cleaning solvent.
Dry the components with compressed air.
Inspect the timing chain for binding or wear.
Inspect the crankshaft sprocket for worn, damaged, or chipped teeth.
Inspect for a damaged keyway.
Inspect for worn oil pump drive splines.
Inspect the timing chain tensioner for the following conditions: Damaged or broken tension spring (1) Excessive wear or scoring on the chain guide surfaces (2, 3)

Camshaft Position Actuator Cleaning and Inspection

Insert a tie strap (1) through the center of the camshaft position (CMP) actuator and over the reluctor wheel.
Clean the CMP actuator with cleaning solvent.
Dry the components with compressed air.
Inspect the CMP actuator for a broken spring (1).
Inspect the CMP actuator for the following conditions: Improper positioning of the CMP reluctor wheel. The actuator return spring should reposition the reluctor wheel to the PARK position. Inspect for proper alignment of the mark on the face of the sprocket (1) with the flat edge of the reluctor wheel (2). If the reluctor wheel is not properly positioned, the internal components of the actuator are sticking or the return spring is broken and the actuator should be replaced as an assembly. Nicked or damaged edges (3) on the CMP reluctor wheel Damaged timing sprocket teeth (4)
Inspect the CMP actuator for dirt, debris, or restrictions within the oil passages (1, 2, 3).
Inspect the timing chain tensioner for the following conditions: Damaged or broken tension spring (1) Excessive wear or scoring on the chain guide surfaces (2, 3)

Camshaft Position Actuator Magnet Cleaning and Inspection

Inspect the CMP magnet for the following conditions: A damaged electrical connector An accumulation of dirt or debris in the recessed area around the pintle A build-up of burnt engine oil on the shaft of the pintle which may cause the pintle to stick and not move freely within the proper range of travel
Holding the CMP magnet with the pintle facing upward, measure the pintle retracted position (a). Record the dimension.
Holding the CMP magnet with the pintle facing downward, measure the pintle extended position (a). Record the dimension.
Subtract the retracted dimension from the extended dimension to determine pintle travel. A properly moving pintle will travel 3.0-5.5 mm (0.12-0.22 in).
If the pintle of the CMP magnet is binding or does not move within the proper range of travel, replace the CMP magnet as an assembly.

Camshaft Position Actuator Solenoid Valve Inspection (Off-Vehicle)

Inspect the CMP valve for the following conditions: Dirt, debris, or restrictions within the oil passages (1) Damaged threads (2) If the threads of the valve are damaged, also inspect the threads in the front of the camshaft for damage. Dirt, debris, or restrictions within the oil inlet check valve (3) If debris is detected, the engine assembly should be inspected to determine the source of contamination.
Inspect for a sticking valve spool or broken valve spool spring.
Depress the valve spool into the housing. The valve should move freely with no binding or sticking and minimal resistance inward. When released, the valve spring should return the spool to the proper extended position (1) of 6.08-6.12 mm (0.239-0.241 in).

Valve Rocker Arm and Push Rod Cleaning and Inspection

Mark, sort, or organize the components for assembly. Refer to «Separating Parts»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-description-and-operation__separating-parts) .
Clean the components with cleaning solvent.
Dry the components with compressed air.
Inspect the valve rocker arms bearings (2) for binding or roughness.
Inspect the valve rocker arm pushrod sockets (3) and valve stem mating surfaces (1). These surfaces should be smooth with no scoring or exceptional wear.
Inspect the pushrods for worn or scored ends. These surfaces should be smooth with no scoring or exceptional wear.
Inspect the pushrods for bends. Roll the pushrod on a flat surface to determine if the pushrod is bent.
Inspect the pushrod oil passages for restrictions.
Inspect the rocker arm pivot supports for cracks, wear, or other damage.

Non Active Fuel Management Valve Lifters

Clean the components in cleaning solvent.
Dry the components with compressed air.
Inspect the valve lifters for the following conditions: Bent or broken clip (1) Worn pushrod socket (2) Scuffed or worn sides (3) If the valve lifter shows wear, inspect the engine block lifter bores for wear or damage. Flat spots on the roller (4) Loose or damaged pin (5) Plugged oil hole (6) Worn or damaged roller bearing The roller should rotate freely with no binding or roughness.

Active Fuel Management Valve Lifters

Clean the components in cleaning solvent.
Dry the components with compressed air.
Inspect the valve lifters for the following conditions: Broken or collapsed spring (1) Worn pushrod socket (2) Plugged lubrication hole (3) Plugged lifter oil-switching hole (4) Flat spots on the roller (5) Worn or damaged roller bearing (6) The roller should rotate freely with no binding or roughness. Scuffed or worn sides (7)

Scheme 24

Scheme 24: Valve Guides

Inspect the valve lifter guides for the following conditions

Cracks or damage (1)
Excessive wear in the lifter mounting bores (2)

J 8062: Valve Spring Compressor - Head Off

For equivalent regional tools, refer to Special Tools .

Disassembly

Remove the spark plugs from the cylinder heads.
Use the J 8062: spring compressor in order to compress the valve spring.
Remove the valve stem keys (225).
Remove the valve spring cap (224).
Remove the valve spring (223).
Remove the valves (228).
Remove the valve stem oil seal (222). Refer to «Separating Parts»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-description-and-operation__separating-parts) .
Remove the cylinder head core hole plugs (216), as required.
Remove the coolant temperature sensor (725) from the left cylinder head.
Remove the cylinder head plug (229) from the right cylinder head.
Inspect for a leaking plug. Second design applications use a rivet-type plug (1) at the top rear coolant passage of each cylinder head. If service of a leaking plug is required, it is necessary to remove the cylinder head from the engine to properly remove the plug.
Using a 6.43 mm (0.25 in) or smaller punch, remove the plug assembly (1) from the cylinder head.
If plug removal is required, install either a NEW plug or a first design coolant air bleed cover (313), seal (308) and bolt (312) to complete the repair. Refer to «Cylinder Head Assemble»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) .

Cylinder Head Cleaning and Inspection

Special Tools

J 8089: Carbon Removal Brush
J 9666: Valve Spring Tester

For equivalent regional tools, refer to Special Tools .

Clean the following components: Use the J 8089: brush in order to remove the carbon from the combustion chambers. Gasket surfaces - Refer to «Replacing Engine Gaskets»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-description-and-operation) . Valve stems and heads on a buffing wheel Bolt hole threads Remove all dirt, debris, or threadlocking material from the bolt holes.
Inspect the cylinder head for the following conditions: Cracks in the exhaust ports and combustion chambers External cracks in the water chambers Gasket surfaces for excessive scratches or gouging - Refer to «Replacing Engine Gaskets»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-description-and-operation) . Bolt hole threads for debris or damaged threads - Refer to «Thread Repair»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__thread-repair) or «Thread Repair Specifications»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) .
Inspect the cylinder head for warpage. Refer to «Engine Mechanical Specifications»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__engine-mechanical-specifications) .
Use the J 9666: tester in order to measure the valve spring tension. Refer to «Engine Mechanical Specifications»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__engine-mechanical-specifications) .
Inspect for a leaking plug. Second design applications use a rivet-type plug (1) at the top rear coolant passage of each cylinder head. If service of a leaking plug is required, it is necessary to remove the cylinder head from the engine to properly remove the plug. Refer to «Cylinder Head Disassemble»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-repair-instructions-off-vehicle-2-of-3) .

J 8001: Dial Indicator Set

For equivalent regional tools, refer to Special Tools .

Valve Guide Reaming

Using the J 8001: dial indicator, measure the valve stem-to-guide clearance. Position the tip of the J 8001: dial indicator at the top of the valve guide. Valve stem-to-guide clearance may also be obtained by using a micrometer to measure the valve stem diameter and a ball type measuring gauge to measure the guide bore.
If the clearance measurement between the valve stem (1) and guide (2) is not within specification, the valve and/or the cylinder head must be replaced. Refer to «Engine Mechanical Specifications»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__engine-mechanical-specifications) .
Inspect the valve stems for excessive scoring, wear, or warpage. A valve stem that has excessive scoring (3 or 4) or wear (4 or 6) must be replaced. If a valve guide is worn or has excessive stem-to-guide clearance, the cylinder head should be replaced.
Measure the valve stem diameter. If the valve stem diameter is not within specification, the valve must be replaced. Refer to «Engine Mechanical Specifications»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__engine-mechanical-specifications) . If the valve stem diameter is within specifications, and the stem-to-guide clearance is excessive, the cylinder head must be replaced.

Valve and Seat Grinding

Inspect the valve for the following conditions: Burnt or eroded areas (1) A worn margin (2) A bent stem (3) A worn or scored stem (4) A worn key groove (5) A worn stem tip (6)
Inspect the valve face for the following conditions: Worn or no margin (1 or 4) Pitted surfaces (2) Burnt or eroded areas (3)
Inspect the valve margin. The exhaust valve may be refaced if the margin is within specification before grinding. Refer to «Engine Mechanical Specifications»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__engine-mechanical-specifications) .
Reface pitted exhaust valves on a suitable valve refacing machine.
Replace the valve if the margin is not within specification after grinding. Refer to «Engine Mechanical Specifications»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__engine-mechanical-specifications) .
If the valve face has been ground, measure the valve spring installed height after reassembly of the cylinder head. The valve, and/or cylinder head must be replaced if the valve spring installed height is not within specification. Refer to «Cylinder Head Assemble»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) .
Inspect for a loose valve seat in the cylinder head. The valve seat has an interference fit to the cylinder head.
Clean the valve guide bores with a suitable tool. Remove all carbon or dirt from the bores. The valve guide must be clean for the seat grinding tool to obtain proper results.
Grind the valve seat. The recommendations of the equipment manufacturer should be followed carefully to obtain the proper results. Regardless of the type of equipment used, it is essential that valve guide bores be free from carbon or dirt to ensure proper centering of the tool pilot in the guide.
Inspect the valve seats. The valve seats should be concentric to the centerline of the guide, measure valve seat runout. The total indicator runout reading must be within specification. Refer to «Engine Mechanical Specifications»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__engine-mechanical-specifications) . If the valve seat has been ground, measure the valve spring installed height after reassembly of the cylinder head. The cylinder head, and/or valve must be replaced if the valve spring installed height is not within specification after seat grinding. Refer to «Cylinder Head Assemble»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) .

J 8062: Valve Spring Compressor - Head Off

For equivalent regional tools, refer to Special Tools .

Assembly

Clean the cylinder head valve spring shim area.
Install the valves (228) into the proper port. Refer to «Separating Parts»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-description-and-operation__separating-parts) .
Install the valve stem oil seal (222).
Install the valve spring (223).
Install the valve spring cap (224).
Using the J 8062: compressor, compress the valve spring.
Install the valve stem keys. Use grease in order to hold the keys in place and remove the J 8062: compressor . Ensure the keys seat properly in the groove of the valve stem. Tap the end of the valve stem with a plastic face hammer to seat the keys, if necessary.
After installation, measure the valve spring installed height. Measure from the base of the valve spring to the top of the valve spring. If the spring installed height is not within specification, the valve and/or cylinder head must be replaced. Refer to «Engine Mechanical Specifications»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__engine-mechanical-specifications) . Specification: If the installed height exceeds 46.25 mm (1.82 in), install a valve spring shim of approximately 0.5 mm (0.02 in) thick. Do not shim the valve spring to obtain less than the specified height. Do not assemble the components without a spring shim on the cylinder head.
Install the remaining valves, springs, and other components.
Install sealant GM P/N 12346004 (Canadian P/N 10953480), or equivalent, to the threads of the coolant temperature sensor (725).
Install the coolant temperature sensor into the left cylinder head and tighten to 20 N.m (15 lb ft).
Install sealant GM P/N 12346004 (Canadian P/N 10953480), or equivalent, to the threads of the cylinder head plug (229).
Install the cylinder head plug to the right cylinder head. Tighten the cylinder head plug to 20 N.m (15 lb ft).
Apply threadlock GM P/N 12345382 (Canadian P/N 10953489), or equivalent, to the sides of the cylinder head plugs (216).
Install the cylinder head plugs into the cylinder head. A properly installed plug should be installed 2.5 mm (0.1 in) below the end face of the head.
Install the rivet plug into a rivet gun.
Insert the rivet into the coolant passage of the cylinder head.
Squeezing the handle of the tool, install the rivet.
Inspect for proper installation of the rivet (1). A properly installed plug should be installed flush with the surface of the head.
Installation of the first design coolant air bleed cover (313) and bolt (312) may be used instead of the rivet plug to complete the repair. Tighten the coolant air bleed bolts to 12 N.m (106 lb in).

Oil Pump Disassemble

Remove the oil pump cover bolts (408).
Remove the oil pump housing cover (409).
Remove the oil pump rotor (456) and vane rings (410).
Remove the oil pump vanes (457).
Remove the oil pump slide spring (416).
Remove the oil pump slide seal (414) and slide seal (415).
Remove the oil pump slide (412).
Remove the oil pump housing (458) from the pump housing (413).

Oil Pump Cleaning and Inspection

Clean the components in solvent.
Dry the components with compressed air.
Inspect the oil pump housing (413), housing (458), and the housing cover (409) for cracks, excessive wear, scoring, or casting imperfections.
Inspect the oil pump base-to-engine block oil gallery surface for scratches or gouging.
Inspect the oil pump base for damaged bolt hole threads.
Inspect the pump slide (412) for excessive wear, scoring, or gouges.
Inspect the oil pump internal oil passages for restrictions.
Inspect the oil pump rotor (456) and vanes (457) for cracks, wear, or damage.
Inspect the oil pump slide spring (416) for breakage.
Inspect the oil pump slide (412) and slide seal (414) for cuts or damage.
Inspect the oil pump screen (407) for debris or restrictions.
Inspect the oil pump screen for broken or loose wire mesh.

Oil Pump Assemble

Install the pump housing (458) onto the pump housing (413).
Install 2 of the cover bolts (408) to position and retain the body to the base.
Insert the oil pump slide seal (415) and pump slide seal (414) into the pump housing (458).
Insert the pump slide (412) into the pump housing (458).
Install the slide spring (416) into the pump housing (458).
Install the inner vane ring (410) into the pump housing (458).
Insert the rotor (456) into the pump housing (458).
Install the pump vanes (457) into the rotor (456). The pump vanes, when properly installed, must be flush with the top of the rotor (456).
Install the outer vane ring (410) onto the top of the rotor (456).
Install the oil pump cover (409) onto the oil pump housing (458).
Install the oil pump cover bolts (408) and tighten to 12 N.m (106 lb in).

Engine Front Cover Cleaning and Inspection

Clean the cover in solvent. Remove the sealant from the cover oil pan surface. Refer to «Replacing Engine Gaskets»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-description-and-operation) .
Dry the cover with compressed air.
Inspect the gasket sealing surfaces (1, 4) for excessive scratches or gouging.
Inspect the threaded bolt holes (2, 3) for damaged threads or debris.

Crankshaft Rear Oil Seal Housing Cleaning and Inspection

Remove the crankshaft oil seal (141) from the rear housing.
Clean the housing in solvent. Remove the sealant from the housing oil pan surface. Refer to «Replacing Engine Gaskets»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-description-and-operation) .
Dry the housing with compressed air.
Inspect the gasket sealing surfaces for excessive scratches or gouging.
Inspect the housing-to-oil pan threaded bolt holes for damaged threads or debris.
Inspect the crankshaft oil seal mounting bore for damage.

Valve Lifter Oil Manifold Cleaning and Inspection

Do not lift the manifold assembly by the electrical lead frame.
Remove the oil pressure sensor (706) and washer (707).
Remove the oil screen (452) with O-ring (454).
Inspect the oil screen for debris. If debris is present, clean oil screen. If oil screen cannot be cleaned, replace oil screen.
Clean the manifold with compressed air.
Inspect for loose electrical solenoids (1-4) or loose or missing bolts.
Inspect for damage to the electrical lead frame (5).
Inspect for a damaged electrical connector, for bent or corroded pins.
Inspect for damaged interior sealing gaskets (1-8). If the interior sealing gaskets are damaged, the manifold must be replaced as an assembly.
Inspect for a damaged exterior sealing gasket (9) or scored gasket surfaces.
Inspect for debris or restrictions within the oil passages of the manifold. Refer to «Cylinder Deactivation (Active Fuel Management) Valve Lifter Oil Manifold Diagnosis and Testing»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__cylinder-deactivation-active-fuel-management-valve) .

Valve Rocker Arm Cover Cleaning and Inspection

Inspect the oil fill tube (423) for a loose fit or damage.
Inspect the covers (505) for the following conditions: Scoring or damage to the gasket surfaces Ventilation system passages for restrictions Threaded bolt holes for damage or debris

Oil Pan Cleaning and Inspection

Remove the oil filter fitting (438), as required.
Remove the active fuel management oil pressure relief valve (455) and washer.
Inspect the oil pressure relief valve for proper operation. Lightly depress the valve (2). The valve spring (1) should seat the valve to the proper closed position.
Remove the bolts (427) and baffle (428).
Remove the oil pan cover (434), bolts (435), and gasket (433).
Clean the oil pan in solvent.
Dry the oil pan with compressed air.
Inspect the oil pan for the following conditions: Damaged gasket surfaces (1) Restrictions within the oil passages (2) of the pan Damaged oil filter seal surface (3)
Install the oil pan cover (434), gasket (433), and bolts (435).
Tighten the oil pan cover bolts (435) to 9 N.m (80 lb in).
Install the oil pan baffle (428) and bolts (427).
Tighten the oil pan baffle bolts (427) to 9 N.m (80 lb in).
Install the active fuel management oil pressure relief valve (455) and tighten to 27 N.m (20 lb ft).
Install the oil filter fitting (438), as required, and tighten to 55 N.m (40 lb ft).

Remove and discard the intake manifold-to-cylinder head gaskets (514).
Remove the manifold absolute pressure (MAP) sensor (714). Refer to «Intake Manifold Removal»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__intake-manifold-removal) .
Remove the evaporative emission (EVAP) canister purge solenoid valve, EVAP tubes, and fuel rail with injectors. Refer to «Fuel Rail and Injectors Removal»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__fuel-rail-and-injectors-removal) .
Remove the throttle body and gasket. Refer to «Throttle Body Assembly Removal»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-repair-instructions-off-vehicle-1-of-3__throttle-body-assembly-removal) .
Clean the intake manifold (500) in solvent.
Dry the intake manifold with compressed air.

Inspect the manifold for the following conditions: Damaged gasket or sealing surfaces Loose threaded inserts or studs Debris or restrictions within the passages of the manifold Damaged or broken vacuum fittings Inspect the composite intake manifold assembly for cracks or other damage.
Inspect the intake manifold cylinder head deck for warpage. Locate a straight edge across the intake manifold cylinder head deck surface. Position the straight edge across a minimum of two runner port openings. Insert a feeler gauge between the intake manifold and the straight edge. An intake manifold with warpage in excess of 3 mm (0.118 in) over a 200 mm (7.87 in) area is warped and should be replaced.

Exhaust Manifold Cleaning and Inspection

Clean the exhaust manifold (600) and heat shield (603) in solvent.
Dry the exhaust manifold with compressed air.
Inspect the exhaust manifold-to-cylinder head gasket surface for excessive scratches or gouging.
Inspect for a loose, damaged, or cracked heat shield (603).
Inspect the studs (605) for damaged threads.
Use a straight edge and a feeler gauge and measure the exhaust manifold cylinder head deck for warpage. An exhaust manifold deck with warpage in excess of 0.25 mm (0.01 in) within the 2 front or 2 rear runners or 0.5 mm (0.02 in) overall, may cause an exhaust leak and may affect OBD II system performance. Exhaust manifolds not within specifications must be replaced.

Engine Coolant Air Bleed Pipe and Hole Cover Cleaning and Inspection

Remove the seals (308) from the pipe and covers.
Clean the pipe and covers in solvent.
Dry the pipe and covers with compressed air.
Inspect the pipe and covers for restrictions within the pipe (1) or damaged sealing surfaces (2, 3).

Water Pump Cleaning and Inspection

Remove the old gasket from the water pump sealing surfaces. Refer to «Replacing Engine Gaskets»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-description-and-operation) .
Clean all excess dirt and debris from the water pump housing.
Inspect the water pump for the following conditions: Gasket and hose sealing surfaces for excessive scratches or gouging Restrictions within the internal coolant passages Excessive side-to-side play in the pulley shaft Leakage at the water inlet housing or rear cover Leakage at the water pump vent hole A stain around the vent hole is acceptable. If leakage, dripping, occurs with the engine running and the cooling system pressurized, replace the water pump. Wear or damage in the belt tracking area of the pulley

Thread Repair

Special Tools

J 42385-100: Head/Main Bolt Thread Repair Kit
J 42385-200: Common Thread Repair Kit
J 42385-300: Fixtures and Hardware Kit

For equivalent regional tools, refer to Special Tools .

Scheme 25

Scheme 25: General Thread Repair

The thread repair process involves a solid, thin walled, self-locking, carbon steel, bushing type insert (1). During the bushing installation process, the driver tool expands the bottom external threads of the insert into the base material (2). This action mechanically locks the insert in place. Also, when installed to the proper depth, the flange of the insert will be seated against the counterbore of the repaired hole.

Drill out the threads of the damaged hole (1). M6 inserts require a minimum drill depth of 15 mm (0.59 in). M8 inserts require a minimum drill depth of 20 mm (0.79 in). M10 inserts require a minimum drill depth of 23.5 mm (0.93 in).
Using compressed air, clean out any chips.
Counterbore the hole to the full depth permitted by the tool (1).
Using compressed air, clean out any chips.
Using a tap wrench (2), tap the threads of the drilled hole. M6 inserts require a minimum tap depth of 15 mm (0.59 in). M8 inserts require a minimum tap depth of 20 mm (0.79 in). M10 inserts require a minimum tap depth of 23.5 mm (0.93 in).
Using compressed air, clean out any chips.
Spray cleaner GM P/N 12346139, GM P/N 12377981 (Canadian P/N 10953463), or equivalent, into the hole.
Using compressed air, clean any cutting oil and chips out of the hole.
Lubricate the threads of the installer tool (2) with the driver oil (1).
Install the insert (2) onto the driver tool (1).
Apply threadlock LOCTITE™ 277, J 42385-109 (1), or equivalent, to the insert OD threads (2).
Install the insert (2) into the hole. Install the insert until the flange of the insert contacts the counterbored surface. Continue to rotate the installer tool (1) through the insert. The installer tool will tighten up before screwing completely through the insert. This is acceptable. You are forming the bottom threads of the insert and mechanically locking the insert to the base material threads.
Inspect the insert for proper installation into the hole. A properly installed insert (1) will be either flush or slightly below flush with the surface of the base material (2).

Cylinder Head Bolt Hole Thread Repair

The cylinder head bolt hole thread repair kit consists of the following items: The drill (1) The tap (2) The installer (3) The sleeve (4) The alignment pin (5) The bushing (6) The bolts (7) The fixture plate (8)
Install the fixture plate (3), bolts (1), and bushing (2) onto the engine block deck. Position the fixture plate and bushing over the hole that is to be repaired (4).
Position the alignment pin (1) through the bushing and into the hole.
With the alignment pin in the desired hole, tighten the fixture retaining bolts (2).
Remove the alignment pin from the hole.
Install the sleeve (2) onto the drill (1).
Drill out the threads of the damaged hole. Drill the hole until the stop collar of the drill bit or the sleeve contacts the bushing.
Using compressed air, clean out any chips.
Using a tap wrench, tap the threads of the drilled hole.
In order to tap the new threads to the proper depth, rotate the tap into the hole until the mark (1) on the tap aligns with the top of the drill bushing (3).
Remove the fixture plate (2), bushing (3), and bolts.
Using compressed air, clean out any chips.
Spray cleaner GM P/N 12346139, GM P/N 12377981 (Canadian P/N 10953463), or equivalent, into the hole.
Using compressed air, clean any cutting oil and chips out of the hole.
Lubricate the threads of the installer tool (2) with the driver oil (1).
Install the insert (2) onto the driver tool (1).
Apply threadlock LOCTITE™ 277, J 42385-109 (1), or equivalent, to the insert OD threads (2).
Install the insert and driver (1) into the hole. Rotate the driver tool until the mark on the tool aligns with the deck surface of the engine block. The installer tool will tighten up before screwing completely through the insert. This is acceptable. You are forming the bottom threads of the insert and mechanically locking the insert to the base material threads.

Main Cap Bolt Hole Thread Repair

The main cap bolt hole thread repair kit consists of the following items: The drill (1) The tap (2) The installer (3) The fixture plate (4) The long bolts (5) The short bolts (6) The alignment pin (7) The bushing (8)
Install the fixture plate, bolt, and bushing onto the engine block. Position the fixture plate and bushing over the hole that is to be repaired.
Position the alignment pin in the desired hole and tighten the fixture retaining bolts.
Drill out the damaged hole. The outer bolt hole locations 11-20 have the shallower counterbores. Use sleeve J 42385-316 with the drill. Drill until the stop collar of the drill bit or the sleeve contacts the bushing.
Using compressed air, clean out any chips.
Using a tap wrench, tap the threads of the drilled hole. In order to tap the new threads to the proper depth, rotate the tap into the hole until the mark on the tap aligns with the top of the bushing. For the deeper main cap holes 1-10, rotate the tap until the upper mark (4) on the tap aligns with the top of the bushing (3). For the shallower main cap holes 11-20, rotate the tap until the lower mark (1) on the tap aligns with top of the bushing (3).
Using compressed air, clean out any chips.
Spray cleaner GM P/N 12346139 (Canadian P/N 10953463), or equivalent, into the hole.
Using compressed air, clean any cutting oil and chips out of the hole.
Lubricate the threads of the installer tool (2) with the driver oil (1).
Install the insert (2) onto the driver tool (1).
Apply threadlock LOCTITE™ 277, J 42385-109 (1), or equivalent, to the insert OD threads (2).
Install the insert and driver (1) through the fixture plate and bushing and into the hole. Rotate the driver tool until the mark on the tool (3) aligns with the top of the bushing (2). The installer tool will tighten up before screwing completely through the insert. This is acceptable. You are forming the bottom threads of the insert and mechanically locking the insert to the base material threads.

Service Prior to Assembly

Dirt or debris will cause premature wear of the rebuilt engine. Clean all components. Refer to «Cleanliness and Care»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__cleanliness-and-care) .
Use the proper tools to measure components when inspecting for excessive wear. Components that are not within the manufacturers specifications must be repaired or replaced.
When the components are installed into an engine, return the components to their original location, position and direction. Refer to «Separating Parts»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-description-and-operation__separating-parts) .
During assembly, lubricate all moving parts with clean engine oil. This provides initial lubrication when the engine is first started.

Engine Block Plug Installation

Apply a 3.175 mm (0.125 in) bead of sealant GM P/N 12346004 (Canadian P/N 10953480) to the engine block coolant heater sealing washer (115), if applicable. Refer to «Adhesives, Fluids, Lubricants, and Sealers»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-specifications__adhesives-fluids-lubricants-and-sealers) .
Install the engine block coolant heater (114) to the engine block. Tighten the engine block coolant heater to 50 N.m (37 lb ft).
Apply a 3.175 mm (0.125 in) bead of sealant GM P/N 12346004 (Canadian P/N 10953480) to the engine block right rear coolant drain hole plug sealing washer.
Install the engine block right rear coolant drain hole plug and tighten to 60 N.m (44 lb ft).
Apply a 3.175 mm (0.125 in) bead of sealant GM P/N 12346004 (Canadian P/N 10953480) to the engine block left front oil gallery plug sealing washer (117).
Install the engine block left front oil gallery plug (116) and tighten to 60 N.m (44 lb ft).
Apply a 3.175 mm (0.125 in) bead of sealant GM P/N 12346004 (Canadian P/N 10953480) to the engine block left rear oil gallery plug sealing washer (113).
Install the engine block left rear oil gallery plug (112) and tighten to 60 N.m (44 lb ft).
Inspect the engine block rear oil gallery plug and O-ring seal. If the O-ring seal on the plug is not cut or damaged, the rear oil gallery plug may be used again.
Lubricate the O-ring seal with clean engine oil.
Install the O-ring seal onto the plug.
Install the engine block rear oil gallery plug into the oil gallery bore. A properly installed block plug will protrude 0.8-1.4 mm (0.0315-0.055 in) beyond the rear face of the block.
Apply threadlock GM P/N 12345382 (Canadian P/N 10953489) to the sides of the NEW front oil gallery plug (101).
Install a NEW engine block front oil gallery plug. Install the plug into the oil gallery bore 2.2-2.8 mm (0.0086-0.011 in) below flush.
Install the left side knock sensor (718) and bolt (739) and tighten to 20 N.m (15 lb ft).
Install the right side knock sensor (718) and bolt (739) and tighten to 20 N.m (15 lb ft).

J 45059: Angle Meter

For equivalent regional tools, refer to Special Tools .

Install the crankshaft bearings to the engine block and bearing caps. The thrust bearings are to be installed into center journal.
Lubricate the bearing surfaces and crankshaft journals with clean engine oil.
Install the crankshaft.
Install the crankshaft bearing caps, with bearings, into the engine block.
Install NEW M10 bolts (129) and NEW studs (128).
Using a plastic-face hammer, tap the bearing caps into place.
Install the NEW M8 bearing cap side bolts (127).
Tighten the M10 bearing cap bolts (1-10) a first pass in sequence to 20 N.m (15 lb ft).
Using a plastic-face hammer, tap the crankshaft rearward, then forward in order to align the thrust bearings. Tighten the M10 bolts (1-10) a final pass in sequence 80 degrees using the J 45059: meter . Tighten the M10 studs (11-20) a first pass in sequence to 20 N.m (15 lb ft) . Tighten the M10 studs (11-20) a final pass in sequence 51 degrees using the J 45059: meter .
Tighten the M8 main bearing cap side bolts (1-10). Tighten the M8 bolts (1-5) a first pass in sequence to 20 N.m (15 lb ft) . Tighten the M8 bolts (1-5) a final pass in sequence to 30 N.m (22 lb ft) . Tighten the M8 bolts (6-10) a first pass in sequence to 20 N.m (15 lb ft) . Tighten the M8 bolts (6-10) a final pass in sequence to 30 N.m (22 lb ft) .
Install the CKP sensor. Inspect the CKP sensor O-ring seal (750). If the O-ring seal is not cut or damaged, it may be used again. Coat the O-ring seal with clean engine oil. Install the O-ring onto the sensor. Install the sensor (701). Rotate the sensor until the locating hole in the bracket aligns with the bolt hole in the block. Install the sensor bolt (702). Tighten the CKP sensor bolt to 25 N.m (18 lb ft) .
Measure the crankshaft end play. Thrust the crankshaft forward or rearward. Insert a feeler gauge between the center crankshaft bearing and the bearing surface of the crankshaft and measure the bearing clearance. The proper crankshaft end play clearance is 0.04-0.2 mm (0.0015-0.0078 in). If the bearing clearance is not within specifications, inspect the thrust surfaces for nicks, gouges or raised metal. Minor imperfections may be removed with a fine stone.

Piston, Connecting Rod, and Bearing Installation

Special Tools

J 8037: Piston Ring Compressor
J 8087: Cylinder Bore Gauge
J 41556: Connecting Rod Guide
J 45059: Angle Meter

For equivalent regional tools, refer to Special Tools .

Piston Selection

With a micrometer at a right angle, measure the piston outside diameter (OD). Measure the diameter 43 mm (1.69 in) from the top of the piston. Refer to «Engine Mechanical Specifications»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__engine-mechanical-specifications) .
Record the piston OD.
Adjust the micrometer to the recorded piston OD.
Insert the J 8087: gauge into the micrometer and zero the gauge dial.
Using the J 8087: gauge, measure the cylinder bore inside diameter (ID). Measure at a point 64 mm (2.5 in) from the top of the cylinder.
Record the cylinder bore ID.
Subtract the piston OD from the cylinder bore ID in order to determine the piston-to-bore clearance. Refer to «Engine Mechanical Specifications»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__engine-mechanical-specifications) .
If the proper clearance cannot be obtained, select another piston and pin assembly and measure the clearances again. If the proper fit cannot be obtained, the cylinder bore may require honing for an oversize piston.

Piston, Pin, and Connecting Rod Installation

Lubricate the following components with clean engine oil: Piston Piston rings Cylinder bore Bearings and bearing surfaces
Install the bearings to the connecting rod and cap.
Position the oil control ring end gaps a minimum of 25 mm (1.0 in) from each other.
Position the compression ring end gaps 180 degrees opposite each other.
Install the J 41556: guide to the connecting rod.
Identify the proper installation direction of the piston and connecting rod assembly. When installing the piston and connecting rod assembly, the mark on the top of the piston (1) and the tab (2) on the side of the connecting rod should face the front of the engine.
Install the J 8037: compressor onto the piston and compress the piston rings.
Install the piston, pin, and connecting rod assembly into the cylinder bore. Hold the piston ring compressor firmly against the engine block. Using a wooden hammer handle, lightly tap the top of the piston until all piston rings have entered the cylinder bore.
Use the J 41556 to guide the connecting rod onto the crankshaft journal.
Remove the J 41556 from the connecting rod.
Install the bearing cap (103), bearing (104), and bolts (102). Tighten the bolts a first pass to 20 N.m (15 lb ft). Tighten the bolts a final pass to 85 degrees using the J 45059: meter.
Measure the connecting rods for the proper side clearance. Refer to «Engine Mechanical Specifications»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__engine-mechanical-specifications) .

Camshaft Installation

Lubricate the camshaft journals and the bearings with clean engine oil.
Install the camshaft sprocket bolt into the camshaft front bolt hole.
Using the bolt as a handle, carefully install the camshaft into the engine block.
Remove the bolt from the front of the camshaft.
Install the camshaft retainer (203) and the bolts (204). Install the retainer with the sealing gasket facing the front of the engine block.
Tighten the camshaft retainer TORX® head bolts to 15 N.m (11 lb ft).

Timing Chain, Crankshaft Sprocket, Camshaft Position Actuator, and Solenoid Valve Installation

Special Tools

EN 46330: Timing Belt Tensioner Retaining Pin
J 41478: Crankshaft Front Oil Seal Installer
J 41665: Crankshaft Balancer and Sprocket Installer
J 42386-A: Flywheel Holding Tool
J 45059: Angle Meter

For equivalent regional tools, refer to Special Tools .

Install the key into the crankshaft keyway, if previously removed.
Tap the key (122) into the keyway until both ends of the key bottom onto the crankshaft.
Install the crankshaft sprocket (207) onto the front of the crankshaft. Align the crankshaft key with the crankshaft sprocket keyway.
Use the J 41478: installer (1) and the J 41665: seal installer (2) in order to install the crankshaft sprocket. Install the sprocket onto the crankshaft until fully seated against the crankshaft flange.
Rotate the crankshaft sprocket until the sprocket alignment mark is in the 12 o'clock position.
Compress the timing chain tensioner guide and install the EN 46330: retaining pin.
Install the timing chain tensioner (232) and left side bolt (231). Do not install the right side bolt at this time. The right side bolt will be installed after the camshaft position (CMP) actuator and chain have been installed onto the engine.
Remove the tie strap (1) from the actuator.
Identify the alignment hole (1) in the rear face of the CMP actuator and the locating pin (2) on the front face of the camshaft.
Install the CMP actuator and timing chain. Align the hole in the rear face of the CMP actuator with the locating pin on the front face of the camshaft. If necessary, rotate the camshaft or crankshaft sprockets in order to align the timing marks. Use care to install the actuator completely onto the front of the camshaft. Position fingers onto the face of the actuator sprocket and push the actuator onto the front of the camshaft. Never push on the reluctor wheel when attempting to install the actuator.
Locate a straight edge across the front face of the engine block and inspect for proper installation of the CMP actuator and timing chain. With the CMP actuator properly and completely installed onto the front of camshaft, the timing chain will not protrude beyond the front face of engine block.
Install a NEW CMP actuator solenoid valve (234). With the CMP actuator properly positioned onto the camshaft, the CMP actuator solenoid valve can be threaded completely into the camshaft using light hand pressure. Tighten by hand until snug.
Inspect the sprockets for proper alignment. The mark on the CMP actuator sprocket (1) should be located in the 6 o'clock position and the mark on the crankshaft sprocket (2) should be located in the 12 o'clock position.
Install the right side bolt (231) into the timing chain tensioner. Tighten the timing chain tensioner bolts to 30 N.m (22 lb ft).
Remove the EN 46330: retaining pin.
Temporarily install the automatic transmission flex plate and bolts. Refer to «Automatic Transmission Flex Plate Installation»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__automatic-transmission-flex-plate-installation) .
Install the J 42386-A: holding tool (1) and bolts. Use 1 M10 - 1.5 x 120 mm and 1 M10 - 1.5 x 45 mm bolt for proper tool operation. Tighten the J 42386-A: holding tool bolts to 50 N.m (37 lb ft).
Tighten the CMP actuator solenoid valve. Tighten the CMP actuator solenoid valve a first pass to 65 N.m (48 lb ft) . Tighten the CMP actuator solenoid valve a final pass an additional 90 degrees using the J 45059: angle meter .
Remove the J 42386-A: holding tool and bolts.
Remove the automatic transmission flex plate and bolts. Refer to «Automatic Transmission Flex Plate Removal»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__automatic-transmission-flex-plate-removal) .

Oil Pump, Screen and Crankshaft Oil Deflector Installation

Align the splined surfaces of the crankshaft sprocket and the oil pump drive gear and install the oil pump (413).
Install the oil pump (413) onto the crankshaft sprocket until the pump housing contacts the face of the engine block.
Install the oil pump bolts (411) and tighten to 25 N.m (18 lb ft).
Install the crankshaft oil deflector and nuts.
Lubricate a NEW oil pump screen O-ring seal (1) with clean engine oil.
Install the NEW O-ring seal onto the oil pump screen.
Install the oil pump screen (4).
Install the oil pump screen bolt (2) and the nuts (3). Tighten the oil pump screen bolt to 12 N.m (106 lb in) . Tighten the crankshaft oil deflector nut to 25 N.m (18 lb ft) .

Crankshaft Rear Oil Seal Housing Installation (Without Seal in Housing)

Special Tools

J 41476: Front and Rear Cover Alignment Tool
J 41480: Front and Rear Cover Alignment

For equivalent regional tools, refer to Special Tools .

Inspect the rear oil gallery plug for proper installation.
Install the rear housing gasket (519), rear housing (518), and bolts (517).
Tighten the bolts finger tight. Do not overtighten.
Install the J 41480: alignment and bolts. Tighten the tool-to-engine block bolts to 25 N.m (18 lb ft).
Rotate the crankshaft until 2 opposing flywheel bolt holes are parallel to the oil pan surface.
Install the J 41476: tool and bolts onto the rear of the crankshaft.
Remove the tools. Tighten the tool mounting bolts until snug. Do not overtighten. Tighten the J 41480: alignment tool-to-rear housing bolts evenly to 12 N.m (106 lb in) . Tighten the rear housing bolts to 30 N.m (22 lb ft) .
Measure the rear housing-to-engine block oil pan surface for flatness. Place a straight edge onto the engine block and rear housing oil pan sealing surfaces. Avoid contact with the portion of the gasket that protrudes into the oil pan surface. Insert a feeler gauge between the rear housing and the straight edge. The housing must be flush with the oil pan or no greater than 0.5 mm (0.02 in) below flush (a).
If the rear housing-to-engine block oil pan surface alignment is not within specifications, repeat the housing alignment procedure.
If the correct rear housing-to-engine block alignment at the oil pan surface cannot be obtained, replace the rear housing.

Crankshaft Rear Oil Seal Housing Installation (With Seal in Housing)

Special Tools

J 41479-2A: Crankshaft Rear Oil Seal Installation Guide
J 41480: Front and Rear Cover Alignment

For equivalent regional tools, refer to Special Tools .

Inspect the rear housing to identify for alignment tabs (1).
Inspect the rear oil gallery plug for proper installation.
Install the J 41479-2A: guide cone and bolts onto the rear of the crankshaft.
Tighten the bolts until snug. Do not overtighten.
Install the rear housing gasket (1), rear housing with seal (2), and bolts (3).
Tighten the bolts finger tight. Do not overtighten.
Remove the J 41479-2A: guide and bolts.
Install the J 41480: alignment and bolts. Tighten the tool-to-engine block bolts to 25 N.m (18 lb ft) . Tighten the J 41480: alignment tool-to-rear housing bolts evenly to 12 N.m (106 lb in) . Tighten the rear housing-to-engine block bolts to 30 N.m (22 lb ft).
Remove the J 41480: alignment and bolts.
Measure the rear housing-to-engine block oil pan surface for flatness. Place a straight edge onto the engine block and rear housing oil pan sealing surfaces. Avoid contact with the portion of the gasket that protrudes into the oil pan surface. Insert a feeler gauge between the rear housing and the straight edge. The housing must be flush with the oil pan or no greater than 0.5 mm (0.02 in) below flush.
If the rear housing-to-engine block oil pan surface alignment is not within specifications, repeat the housing alignment procedure.
If the correct rear housing-to-engine block alignment at the oil pan surface cannot be obtained, replace the rear housing.

Crankshaft Rear Oil Seal Installation

Special Tools

J 41479: Crankshaft Rear Oil Seal Installer
J 41479-2A: Crankshaft Rear Oil Seal Installation Guide

For equivalent regional tools, refer to Special Tools .

Inspect the seal and identify the part number markings for proper orientation.
Install the J 41479: seal installer or the J 41479-2A: installation guide cone (2) and bolts onto the rear of the crankshaft. The J 41479-2A: installation guide may be required for manual transmission or 5.3L LS4 applications.
Tighten the bolts until snug. Do not overtighten.
Install the rear oil seal onto the tapered cone (2) and push the seal to the rear seal bore. Install the oil seal with the part number markings facing away from the engine.
Thread the J 41479: seal installer threaded rod into the tapered cone until the tool (1) contacts the oil seal.
Align the oil seal onto the tool (1).
Rotate the handle of the tool (1) clockwise until the seal enters the rear housing and bottoms into the seal bore.
Remove the tool.

Engine Front Cover Installation

Special Tools

EN-48853: Front Cover Alignment Tool
J 41480: Front and Rear Cover Alignment

For equivalent regional tools, refer to Special Tools

Install the front cover gasket (503), front cover (502), and bolts (501).
Tighten the cover bolts finger tight. Do not overtighten.
Install the J 41480: alignment. Tighten the tool-to-engine block bolts to 25 N.m (18 lb ft).
Install the EN-48853: tool (1).
Install the crankshaft balancer bolt. Tighten the crankshaft balancer bolt by hand until snug. Do not overtighten. Tighten the J 41480: alignment (2). Tighten the engine front cover bolts to 25 N.m (18 lb ft) .
Remove the tools.
Measure the oil pan surface flatness, front cover-to-engine block. Place a straight edge across the engine block and front cover oil pan sealing surfaces. Avoid contact with the portion of the gasket that protrudes into the oil pan surface. Insert a feeler gauge between the front cover and the straight edge tool. The cover must be flush with the oil pan surface or no greater than 0.3 mm (0.0118 in) (a) below flush.
If the front cover-to-engine block oil pan surface alignment is not within specifications, repeat the cover alignment procedure.
If the correct front cover-to-engine block alignment cannot be obtained, replace the front cover.
Install the camshaft position (CMP) actuator magnet (752), gasket (753), and bolts (751). Tighten the bolts to 12 N.m (106 lb in).
Install the CMP sensor (703) and O-ring (704).
Install the CMP sensor wire harness (737) and bolts (738). Tighten the bolts to 12 N.m (106 lb in).

J 41478: Crankshaft Front Oil Seal Installer

For equivalent regional tools, refer to Special Tools .

Lubricate the outer edge of the oil seal (140) with clean engine oil.
Lubricate the front cover oil seal bore with clean engine oil.
Install the crankshaft front oil seal (140) onto the J 41478: seal installer.
Install the J 41478: seal installer threaded rod, with nut, washer, guide, and oil seal, into the end of the crankshaft.
Use the J 41478: seal installer in order to install the oil seal into the cover bore. Use a wrench and hold the hex on the installer bolt. Use a second wrench and rotate the installer nut clockwise until the seal bottoms in the cover bore. Remove the tool. Inspect the oil seal for proper installation. The oil seal should be installed evenly and completely into the front cover bore.

Oil Pan Installation

Apply a 5 mm (0.2 in) bead of sealant GM P/N 12378521 (Canadian P/N 88901148), or equivalent, 20 mm (0.8 in) long to the engine block. Apply the sealant directly onto the tabs of the front cover gasket that protrude into the oil pan surface. Refer to «Adhesives, Fluids, Lubricants, and Sealers»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-specifications__adhesives-fluids-lubricants-and-sealers) .
Apply a 5 mm (0.2 in) bead of sealant GM P/N 12378521 (Canadian P/N 88901148), or equivalent, 20 mm (0.8 in) long to the engine block. Apply the sealant directly onto the tabs of the rear housing gasket that protrude into the oil pan surface.
Pre-assemble the oil pan gasket to the pan. Install the gasket onto the oil pan. Install the oil pan bolts to the pan and through the gasket.
Install the oil pan, gasket, and bolts to the engine block.
Tighten the bolts finger tight. Do not overtighten.
Place a straight edge across the rear of the engine block and the rear of the oil pan at the transmission housing mounting surfaces.
Align the oil pan until the rear of engine block and rear of oil pan are flush or even. Tighten the oil pan-to-block and oil pan-to-front cover bolts to 25 N.m (18 lb ft) . Tighten the oil pan-to-rear cover bolts to 12 N.m (106 lb in) .
Measure the oil pan-to-engine block alignment (a). Place a straight edge across the rear of the engine block and rear of oil pan at the transmission housing mounting surfaces. NOTE: The rear of the oil pan must NEVER protrude beyond the engine block and transmission housing mounting surfaces. Insert a feeler gauge between the straight edge and the oil pan transmission housing mounting surface and measure to ensure that there is no greater than a 0.1 mm (0.004 in) gap between the pan and straight edge. If the oil pan alignment is not within specifications, remove the oil pan and repeat the above procedure.
Install the oil level indicator switch and tighten to 20 N.m (15 lb in).

Oil Filter Installation

Install the oil filter fitting (438) and tighten to 55 N.m (40 lb ft).
Lubricate the oil filter seal with clean engine oil.
Install the oil filter (437) and tighten to 30 N.m (22 lb ft).

Valve Lifter Installation

Lubricate the valve lifters (209, 219) and engine block valve lifter bores with clean engine oil.
Insert the valve lifters into the lifter guides. Align the flat area (3) on the top of the non-active fuel management lifter with the flat area in the lifter guide bore. Push the lifter completely into the guide bore. The active fuel management lifters (4) are to be installed into the guide, with the notch in the guide (1) aligned with the raised area (2) of the lifter.
Install the valve lifters and guide assembly (210) to the engine block.
Install the valve lifter guide bolts (211) and tighten to 12 N.m (106 lb in).

Cylinder Head Installation - Left Side

Special Tools

J 42385-100: Head/Main Bolt Thread Repair Kit
J 45059: Angle Meter

For equivalent regional tools, refer to Special Tools .

Clean the engine block cylinder head bolt holes, if required. Thread repair tool J 42385-107 may be used to clean the threads of old threadlocking material.
Spray cleaner GM P/N 12346139 (Canadian P/N 10953463), GM P/N 12377981 (Canadian P/N 10953463), or equivalent, into the hole.
Clean the cylinder head bolt holes with compressed air.
Install the cylinder head locating pins (230).
Inspect the locating pins for proper installation.
Inspect the displacement markings (1, 2) on the gasket, for proper usage.
Install the NEW cylinder head gasket (217) onto the locating pins.
Install the cylinder head (218) onto the locating pins and the gasket.
Install the NEW cylinder head bolts (220, 221).
Tighten the cylinder head bolts. Tighten the M11 cylinder head bolts (1-10) a first pass in sequence to 30 N.m (22 lb ft) . Tighten the M11 cylinder head bolts (1-10) a second pass in sequence to 90 degrees using the J 45059: meter . Tighten the M11 cylinder head bolts (1-10) a final pass in sequence to 70 degrees using the J 45059: meter . Tighten the M8 cylinder head bolts (11-15) to 30 N.m (22 lb ft). Begin with the center bolt (11) and alternating side-to-side, work outward tightening all of the bolts.

Cylinder Head Installation - Right Side

Special Tools

J 42385-100: Head/Main Bolt Thread Repair Kit
J 45059: Angle Meter

For equivalent regional tools refer to Special Tools .

Clean the engine block cylinder head bolt holes, if required. Thread repair tool J 42385-107 may be used to clean the threads of old threadlocking material.
Spray cleaner GM P/N 12346139 (Canadian P/N 10953463), GM P/N 12377981 (Canadian P/N 10953463), or equivalent, into the hole.
Clean the cylinder head bolt holes with compressed air.
Install the cylinder head locating pins (230).
Inspect the locating pins for proper installation.
Inspect the displacement markings (1, 2) on the gasket, for proper usage.
Install the NEW cylinder head gasket (217) onto the locating pins.
Install the cylinder head (218) onto the locating pins and the gasket.
Install the NEW cylinder head bolts (220, 221).
Tighten the cylinder head bolts. Tighten the M11 cylinder head bolts (1-10) a first pass in sequence to 30 N.m (22 lb ft) . Tighten the M11 cylinder head bolts (1-10) a second pass in sequence to 90 degrees using the J 45059: angle meter . Tighten the M11 cylinder head bolts (1-10) a final pass in sequence to 70 degrees using the J 45059: angle meter . Tighten the M8 cylinder head bolts (11-15) to 30 N.m (22 lb ft). Begin with the center bolt (11) and alternating side-to-side, work outward tightening all of the bolts.

Valve Rocker Arm and Push Rod Installation

Lubricate the valve rocker arms and pushrods with clean engine oil.
Lubricate the flange of the valve rocker arm bolts with clean engine oil.
Install the valve rocker arm pivot support.
Install the pushrods.
Install the rocker arms and bolts.
Rotate the crankshaft until number 1 piston is at top dead center of compression stroke. In this position, cylinder number 1 rocker arms will be off lobe lift, and the crankshaft sprocket key will be at the 1:30 position. The camshaft and crankshaft sprocket alignment marks (1, 2) will be in the 12 o'clock position. If viewing from the rear of the engine, the additional crankshaft pilot hole, non-threaded, will be in the 10:30 position. The engine firing order is 1, 8, 7, 2, 6, 5, 4, 3. Cylinders 1, 3, 5 and 7 are left bank. Cylinders 2, 4, 6, and 8 are right bank.
With the engine in the number 1 firing position, tighten the following valve rocker arm bolts: Tighten the exhaust valve rocker arm bolts 1, 2, 7, and 8 to 30 N.m (22 lb ft) . Tighten the intake valve rocker arm bolts 1, 3, 4, and 5 to 30 N.m (22 lb ft) .
Rotate the crankshaft 360 degrees.
Tighten the following valve rocker arm bolts: Tighten the exhaust valve rocker arm bolts 1, 2, 7, and 8 to 30 N.m (22 lb ft) . Tighten the intake valve rocker arm bolts 1, 3, 4, and 5 to 30 N.m (22 lb ft) .

Valve Rocker Arm Cover Installation - Left Side

Install NEW valve rocker arm cover grommets and use NEW valve rocker arm cover bolts if they are serviced with the grommet.
Install a NEW gasket (504) into the valve rocker arm cover.
Install the valve rocker arm cover onto the cylinder head.
Install the cover bolts with grommets and tighten to 12 N.m (106 lb in).
Apply threadlock GM P/N 12345382 (Canadian P/N 10953489), or equivalent, to the threads of the ignition coil bolts (723).
Install the ignition coils (722), wire harness (721), and bolts (723) to the bracket (719). Tighten the ignition coil bolts to 10 N.m (89 lb in).
Apply threadlock GM P/N 12345382 (Canadian P/N 10953489), or equivalent, to the threads of the ignition coil bracket studs (720).
Install the ignition coil and bracket assembly (719) and studs (720). Tighten the bracket studs to 12 N.m (106 lb in).

Valve Rocker Arm Cover Installation - Right Side

Install NEW valve rocker arm cover grommets and use NEW valve rocker arm cover bolts if they are serviced with the grommet.
Install a NEW gasket (504) into the valve rocker arm cover.
Install a NEW oil fill tube (423) to the valve rocker arm cover.
Install the oil fill cap (424).
Install the valve rocker arm cover onto the cylinder head.
Install the cover bolts with grommets and tighten to 12 N.m (106 lb in).
Apply threadlock GM P/N 12345382 (Canadian P/N 10953489), or equivalent, to the threads of the ignition coil bolts (723).
Install the ignition coils (722), wire harness (721), and bolts (723) to the bracket (719). Tighten the ignition coil bolts to 10 N.m (89 lb in).
Apply threadlock GM P/N 12345382 (Canadian P/N 10953489), or equivalent, to the threads of the ignition coil bracket studs (720).
Install the ignition coil and bracket assembly (719) and studs (720). Tighten the bracket studs to 12 N.m (106 lb in).

Valve Lifter Oil Filter Installation

Install a NEW oil filter (452) and O-ring (454) assembly.
Apply sealant GM P/N 12346004 (Canadian P/N 10953480) to the threads of the sensor.
Install the oil pressure sensor (706) and washer (707). Tighten the oil pressure sensor to 35 N.m (26 lb ft).

Valve Lifter Oil Manifold Installation

Do not lift the manifold assembly by the electrical lead frame.
Install the service gasket (556) onto the manifold.
Install the manifold (451) with gasket.
Install the manifold bolts (506) and tighten to 25 N.m (18 lb ft).

Engine Coolant Air Bleed Pipe and Hole Cover Installation

Install the seals (308) onto the engine coolant air bleed pipe and covers.
Install the pipe (307) and seals (308).
Install the bolts (309) and tighten to 12 N.m (106 lb in).
As required, install either a NEW plug or the earlier design coolant air bleed covers (313) and gaskets (308). Refer to «Cylinder Head Assemble»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1) .
Install the bolts (312).
Tighten the cover bolts to 12 N.m (106 lb in).

Intake Manifold Installation

Install NEW intake manifold-to-cylinder head gaskets (514).
Install the intake manifold (500).
Apply a 5 mm (0.20 in) band of threadlock GM P/N 12345382 (Canadian P/N 10953489) to the threads of the intake manifold bolts (512). Refer to «Adhesives, Fluids, Lubricants, and Sealers»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-specifications__adhesives-fluids-lubricants-and-sealers) .
Install the intake manifold bolts. Tighten the intake manifold bolts (1-10) a first pass in sequence to 5 N.m (44 lb in) . Tighten the intake manifold bolts (1-10) a final pass in sequence to 10 N.m (89 lb in) .
Install the fuel rail. Refer to «Fuel Rail and Injectors Installation»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__fuel-rail-and-injectors-installation) .
Lubricate the manifold absolute pressure (MAP) sensor grommet (715) with clean engine oil.
Install the grommet onto the MAP sensor (714).
Install the MAP sensor and retainer (736).
Install the positive crankcase ventilation (PCV) hose - dirty air (716).

Fuel Rail and Injectors Installation

Lubricate the NEW fuel injector O-ring seals (532, 534) with clean engine oil.
Install the O-ring seals to the fuel injectors.
Install the fuel injectors (533) and retainers (521).
Install the fuel rail assembly (510) to the manifold. Push firmly on both sides of the rail until all the injectors have entered their bores.
Apply a 5 mm (0.2 in) band of threadlock GM P/N 12345382 (Canadian P/N 10953489), or equivalent, to the threads of the fuel rail bolts. Refer to «Adhesives, Fluids, Lubricants, and Sealers»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-specifications__adhesives-fluids-lubricants-and-sealers) .
Install the fuel rail bolts (511) and tighten to 10 N.m (89 lb in).
Install the evaporative emission (EVAP) canister purge solenoid valve (730) and tubes (729, 735).
Install the fuel rail stop bracket and bolt and tighten to 50 N.m (37 lb ft).

Throttle Body Assembly Installation

Install the throttle body studs, as required. Tighten the throttle body studs to 6 N.m (53 lb in).
Install the throttle body gasket (509) to the intake manifold. Align the locating tab of the gasket with the notch in the manifold.
Install the throttle body (508), bolts (538), and nuts (507). Tighten the throttle body nuts and bolts to 10 N.m (89 lb in).

Water Pump Installation

Install the water pump (300) and NEW gaskets (306).
Install the water pump bolts (301). Tighten the water pump bolts a first pass to 15 N.m (11 lb ft) . Tighten the water pump bolts a final pass to 30 N.m (22 lb ft) .

Exhaust Manifold Installation - Left Side

Install the heat shield (603) and bolts (604) and tighten to 9 N.m (80 lb in).
Install the exhaust pipe studs (605) and tighten to 20 N.m (15 lb ft).
Apply a 5 mm (0.2 in) wide band of threadlock GM P/N 12345493 (Canadian P/N 10953488), or equivalent, to the threads of the exhaust manifold bolts. Refer to «Adhesives, Fluids, Lubricants, and Sealers»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-specifications__adhesives-fluids-lubricants-and-sealers) .
Install the exhaust manifold, NEW gasket, and bolts. Tighten the exhaust manifold bolts a first pass to 15 N.m (11 lb ft). Tighten the exhaust manifold bolts beginning with the center 2 bolts. Alternate from side-to-side, and work toward the outside bolts. Tighten the exhaust manifold bolts a final pass to 20 N.m (15 lb ft). Tighten the exhaust manifold bolts beginning with the center 2 bolts. Alternate from side-to-side, and work toward the outside bolts.
Using a flat punch, bend over the exposed edge of the exhaust manifold gasket at the rear of the left cylinder head.

Exhaust Manifold Installation - Right Side

Install the heat shield (603) and bolts (604) and tighten to 9 N.m (80 lb in).
Install the exhaust pipe studs (605) and tighten to 20 N.m (15 lb ft).
Apply a 5 mm (0.2 in) wide band of threadlock GM P/N 12345493 (Canadian P/N 10953488), or equivalent, to the threads of the exhaust manifold bolts. Refer to «Adhesives, Fluids, Lubricants, and Sealers»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-specifications__adhesives-fluids-lubricants-and-sealers) .
Install the exhaust manifold, NEW gasket and bolts. Tighten the exhaust manifold bolts a first pass to 15 N.m (11 lb ft). Tighten the exhaust manifold bolts beginning with the center 2 bolts. Alternate from side-to-side, and work toward the outside bolts. Tighten the exhaust manifold bolts a final pass to 20 N.m (15 lb ft). Tighten the exhaust manifold bolts beginning with the center 2 bolts. Alternate from side-to-side, and work toward the outside bolts.
Using a flat punch, bend over the exposed edge of the exhaust manifold gasket at the rear of the left cylinder head.

Oil Level Indicator and Tube Installation

Inspect the O-ring seal (421) for cuts or damage. If the oil level indicator tube O-ring seal is not cut or damaged, it may be used again.
Lubricate the O-ring seal with clean engine oil.
Install the O-ring seal onto the oil level indicator tube (420).
Install the oil level indicator tube into the engine block and rotate into proper position.
Install the tube bolt (419) and tighten to 25 N.m (18 lb ft).
Install the oil level indicator (418) into the tube.

Automatic Transmission Flex Plate Installation

Install the flex plate to the crankshaft.
Apply threadlock GM P/N 12345382 (Canadian P/N 10953489), or equivalent, to the threads of the flex plate bolts.
Install the engine flex plate bolts. Tighten the engine flex plate bolts (1-6) a first pass in sequence to 20 N.m (15 lb ft) . Tighten the engine flex plate bolts (1-6) a second pass in sequence to 50 N.m (37 lb ft) . Tighten the engine flex plate bolts (1-6) a final pass in sequence to 100 N.m (74 lb ft) .

Crankshaft Balancer Installation

Special Tools

J 41478: Crankshaft Front Oil Seal Installer
J 41665: Crankshaft Balancer and Sprocket Installer
J 42386-A: Flywheel Holding Tool
J 45059: Angle Meter

For equivalent regional tools, refer to Special Tools

Install the J 42386-A: tool (1) and bolts. Use 1 M10 - 1.5 x 120 mm and 1 M10 - 1.5 x 45 mm bolt for proper tool operation and tighten the J 42386-A: tool bolts to 50 N.m (37 lb ft).
Position the balancer (138) onto the end of the crankshaft.
Use the J 41665: installer and the J 41478: installer in order to install the balancer. Assemble the J 41478: installer threaded rod, nut, washer and the J 41665: installer . Insert the smaller end of the installer into the front of the balancer. Use a wrench and hold the hex end of the threaded rod. Use a second wrench and rotate the installation tool nut clockwise until the balancer is started onto the crankshaft. Remove the tool and reverse the installation tool. Position the larger end of the installer against the front of the balancer. Use a wrench and hold the hex end of the threaded rod. Use a second wrench and rotate the installation tool nut clockwise until the balancer is installed onto the crankshaft. Remove the balancer installation tools.
Install the used crankshaft balancer bolt (139) and tighten to 330 N.m (240 lb ft) to fully seat the balancer.
Remove the used crankshaft balancer bolt.
Measure for a correctly installed balancer. If the balancer is not installed to the proper dimensions, install the J 41665: installer and repeat the installation procedure.
Install the NEW crankshaft balancer bolt (139): Tighten the crankshaft balancer bolt to 150 N.m (110 lb ft) . Loosen the crankshaft balancer bolt 360 degrees . Tighten the crankshaft balancer bolt to 80 N.m (59 lb ft) . Tighten the crankshaft balancer bolt a final pass to 125 degrees using the J 45059: meter .
Remove the J 42386-A: tool.

J 45299: Engine Preluber

For equivalent regional tools, refer to Special Tools .

Procedure

Remove the engine oil filter and fill with clean engine oil.
Install the oil filter and tighten to 30 N.m (22 lb ft).
Locate the engine block left front oil gallery plug (116).
Install the M16 x 1.5 adapter P/N 509375.
Install the flexible hose to the adapter and open the valve.
Pump the handle on the J 45299: preluber in order to flow a minimum of 1-1.9 liters (1-2 quarts) engine oil. Observe the flow of engine oil through the flexible hose and into the engine assembly.
Close the valve and remove the flexible hose and adapter from the engine.
Install the gallery plug to the engine and tighten to 60 N.m (44 lb ft).
Top-off the engine oil to the proper level.

Crankcase Ventilation System Description

A closed crankcase ventilation system is used in order to provide a more complete scavenging of the crankcase vapors. Fresh air from the throttle body is supplied to the crankcase, mixed with blow-by gases, and then passed through a crankcase ventilation valve into the intake manifold.

The primary control is through the crankcase ventilation valve which meters the flow at a rate depending on manifold vacuum. To maintain idle quality, the crankcase ventilation valve restricts the flow when intake manifold vacuum is high. If abnormal operating conditions arise, the system is designed to allow excessive amounts of blow-by gases to back flow through the crankcase vent tube into the engine air inlet to be consumed by normal combustion.

Filtered fresh air is routed from up-stream of the throttle blade to the front of the right rocker arm cover via a formed rubber hose. To reduce the potential of oil pullover into the throttle bore area due to back flow of the ventilation system, the fitting in the right rocker arm cover is shielded from the rocker arms. From there fresh air and gases are routed through the crankcase and up to the opposite rocker arm cover where the positive crankcase ventilation (PCV) valve is located. Gases are then routed through a hose to the intake manifold.

Drive Belt System Description

The drive belt system consists of the following components

The drive belt
The drive belt tensioner
The drive belt idler pulley
The crankshaft balancer pulley
The accessory drive component mounting brackets
The accessory drive components The power steering pump, if belt driven The generator The A/C compressor, if equipped The engine cooling fan, if belt driven The water pump, if belt driven The vacuum pump, if equipped The air compressor, if equipped

The drive belt system may use 1 belt or 2 belts. The drive belt is thin so that it can bend backwards and has several ribs to match the grooves in the pulleys. The drive belts are made of different types of rubbers, chloroprene or EPDM, and have different layers or plys containing either fiber cloth or cords for reinforcement.

Both sides of the drive belt may be used to drive the different accessory drive components. When the back side of the drive belt is used to drive a pulley, the pulley is smooth.

The drive belt is pulled by the crankshaft balancer pulley across the accessory drive component pulleys. The spring loaded drive belt tensioner keeps constant tension on the drive belt to prevent the drive belt from slipping. The drive belt tensioner arm will move when loads are applied to the drive belt by the accessory drive components and the crankshaft.

The drive belt system may have an idler pulley, which is used to add wrap to the adjacent pulleys. Some systems use an idler pulley in place of an accessory drive component when the vehicle is not equipped with the accessory.

Scheme 26

Scheme 26: The 6.0 Liter V8 Engine

Camshaft and Drive System

A billet steel 1 piece camshaft is supported by 5 bearings pressed into the engine block. The camshaft position (CMP) actuator is mounted to the front of the camshaft and retained by the CMP solenoid valve. The CMP actuator is driven by the crankshaft sprocket through the camshaft timing chain. The CMP sensor wheel is incorporated into the front face of the CMP actuator with the CMP sensor and CMP actuator magnet mounted in the engine front cover. A timing chain tensioner is mounted to the front of the engine block above the crankshaft sprocket. The externally splined crankshaft sprocket is positioned to the crankshaft by a key and keyway. The crankshaft sprocket external splines drive the oil pump drive gear. A retaining plate mounted to the front of the engine block maintains camshaft location. Refer to Camshaft Position Actuator and Solenoid Valve Description and Camshaft Actuator System Description .

Crankshaft

The crankshaft is cast nodular iron. The crankshaft is supported by 5 crankshaft bearings. The bearings are retained by crankshaft bearing caps which are machined with the engine block for proper alignment and clearance. The crankshaft journals are undercut and rolled. The center main journal is the thrust journal. A crankshaft position (CKP) reluctor ring is press fit mounted at the rear of the crankshaft. The reluctor ring is not serviceable separately.

Cylinder Heads

The cylinder heads are cast aluminum and have pressed in place powdered metal valve guides and valve seats. Passages for the engine coolant air bleed system are at the front of each cylinder head. The valve rocker arm covers are retained to the cylinder heads by 4 center mounted rocker arm cover bolts. High-flow cylinder heads with modified intake and exhaust ports are used to increase flow.

Engine Block

The engine block is a cam-in-block deep skirt 90 degree V configuration with 5 crankshaft bearing caps. The engine block is cast aluminum. The 5 crankshaft bearing caps each have 4 vertical M10 and 2 horizontal M8 mounting bolts. The camshaft is supported by 5 camshaft bearings pressed into the block.

Exhaust Manifolds

The exhaust manifolds are a 1 piece cast iron design. The exhaust manifolds direct exhaust gasses from the combustion chambers to the exhaust system. Each manifold also has an externally mounted heat shield that is retained by bolts.

Hybrid Controls

Refer to Hybrid Modes of Operation Description .

Intake Manifold

The intake manifold is a 1 piece composite design that incorporates brass threaded inserts for mounting the fuel rail, throttle body, and wire harness studs. Each side of the intake manifold is sealed to the cylinder head by a non-reusable silicone sealing gasket/nylon carrier assembly. The electronically actuated throttle body bolts to the front of the intake manifold. The throttle body is sealed by a 1 piece push in place silicone gasket. The fuel rail assembly, with 8 separate fuel injectors, is retained to the intake by 4 bolts. The injectors are seated into their individual manifold bores with O-ring seals to provide sealing. A fuel rail stop bracket is retained to the rear of the left cylinder head by a mounting bolt. The manifold absolute pressure (MAP) sensor is installed and retained to the top front of the intake manifold and sealed by an O-ring seal. The evaporative emission (EVAP) canister purge solenoid valve is mounted to the fuel rail at the left front of the intake manifold. There are no coolant passages within the intake manifold.

Oil Pan

The structural rear-sump oil pan is cast aluminum. Incorporated into the design is the oil filter mounting boss, drain plug opening, baffle, and oil level sensor. The oil filter bypass valve is now incorporated into the new design oil filter. The active fuel management oil pressure relief valve is also internal to the oil pan. Alignment of the structural oil pan to the rear of the engine block and transmission housing is critical.

Piston and Connecting Rod Assembly

The pistons are cast aluminum. The pistons use 2 compression rings and 1 oil control ring assembly. The piston is a low friction, lightweight design with recessed top areas and barrel shaped skirt. The piston pins are chromium steel and are a full-floating design. The connecting rods are powdered metal. The connecting rods are fractured at the connecting rod journal and then machined for the proper clearance. All applications use a piston with a graphite coated skirt. The piston and pin are to be serviced as an assembly.

Valve Rocker Arm Cover Assemblies

The valve rocker arm covers are cast aluminum and use a pre-molded silicon gasket for sealing. Mounted to each rocker cover are the coil and bracket assemblies. Incorporated into the left cover is the positive crankcase ventilation (PCV) system dirty air passage. Incorporated into the right cover is the oil fill tube and the PCV fresh air passage.

Valve Train

Motion is transmitted from the camshaft through the hydraulic roller valve lifters and tubular pushrods to the roller type rocker arms. The nylon valve lifter guides position and retain the valve lifters. The valve rocker arms for each bank of cylinders are mounted on pedestals or pivot supports. Each rocker arm is retained on the pivot support and cylinder head by a bolt. Valve lash is net build. Cylinders 1, 4, 6, and 7 are active fuel management. Refer to Cylinder Deactivation (Active Fuel Management) System Description .

System Operation

General Motors Active Fuel Management engine control system has the ability, under certain light load driving conditions, to provide maximum fuel economy by deactivating 4 of the engines 8 cylinders. The engine will normally operate on 8 cylinders in V8 mode during starting, idling, and medium or heavy throttle conditions. When commanded ON, the engine control module (ECM) will direct the active fuel management system and deactivate cylinders 1 and 7 on the left bank and cylinders 4 and 6 on the right bank, forcing V4 mode. Refer to Lubrication Description and Cylinder Deactivation (Active Fuel Management) System Description .

Scheme 27

Scheme 27: Valve Lifter Oil Manifold Assembly

The valve lifter oil manifold assembly (1) is bolted to the top of the engine block beneath the intake manifold assembly. The oil manifold consists of 4 electrically operated and normally-closed solenoids (2). Each solenoid directs the flow of pressurized engine oil to the active fuel management intake and exhaust valve lifters (5). The active fuel management oil pressure relief valve (6), located in the oil pan, regulates engine oil pressure to the lubrication system and the oil manifold.

When enabling conditions are met for active fuel management operation, the ECM will ground each solenoid control circuit in firing order sequence, allowing current to flow through the solenoid windings. With the windings energized, the solenoid valves open and direct pressurized engine oil through the valve lifter oil manifold into 8 vertical passages in the engine block lifter valley. The 8 vertical passages, 2 per cylinder, direct pressurized oil to the valve lifter bores of the cylinders to be deactivated. When vehicle operating conditions require a return to V8 mode, the ECM will turn OFF the ground circuit for the solenoids, allowing the solenoid valves to close. When the solenoid valves are closed, remaining oil pressure is exhausted through the bleed passages of the valve lifter oil manifold into the engine block lifter valley. The housing of the oil manifold incorporates several oil bleed passages that continually purge trapped air from the manifold and engine block.

To help control contamination within the active fuel management hydraulic system, a small replaceable oil filter (4) is located in the valve lifter oil manifold oil inlet passage. The oil pressure sensor (3) monitors engine oil pressure and provides information to the ECM.

Scheme 28

Scheme 28: Active Fuel Management Valve Lifters

When operating in V8 mode, the active fuel management valve lifters function similar to the non-active fuel management valve lifters. The active fuel management oil manifold solenoids are in the closed position, with no pressurized oil directed to the valve lifters. The pushrod (1) travels upward and downward to actuate the rocker arm and valve. The spring loaded locking pins (5) of the lifter are extended outward and mechanically lock the pin housing (4) to the outer body of the valve lifter (3).

When the active fuel management system is commanded ON, the ECM will direct the solenoids of the oil manifold to open and direct pressurized oil to the valve lifters. Oil travels through the valve lifter oil manifold and engine block oil galleries and enters the inlet port (6) of the valve lifter.

When operating in V4 mode, pressurized oil forces the locking pins (11) inward. The pushrod (7) remains in a constant position and does not travel upward and downward. The outer body of the lifter (9) moves upward and downward independently from the pin housing (10). The valve lifter spring (8) retains tension on the valve train components to eliminate valve train noise.

When the active fuel management system is commanded OFF, the ECM directs the solenoids of the oil manifold to close, stopping the flow of pressurized oil to the valve lifters. The oil pressure within the lifter will decrease and the locking pins will move outward to mechanically lock the pin housing and outer body.

Scheme 29

Scheme 29: Engine Block

The active fuel management engine block incorporates additional features to support active fuel management system operation. Engine oil pressure is routed to the valve lifter oil manifold assembly from an oil gallery (2) in the rear of the cylinder block. Cylinders 1, 4, 6, and 7 each have 2 vertical, cast-in-block oil passages (1). The vertical oil passages permit oil flow from the manifold assembly to the valve lifter bores.

Engine Control Module (ECM)

Refer to Cylinder Deactivation (Active Fuel Management) System Description .

Scheme 30

Scheme 30: Camshaft

The camshaft is designed to provide a lubrication path for pressurized engine oil to flow to the camshaft position (CMP) actuator. Pressurized engine oil enters the camshaft at bearing journal location number 2. Oil travels through the camshaft, out the front, and into the CMP actuator solenoid valve.

Scheme 31

Scheme 31: CMP Actuator Solenoid Valve

The CMP actuator solenoid valve consists of a housing, spool valve (1), spool return spring (2), oil filter (3), inlet check ball return spring (4), and inlet check ball (5). Pressurized engine oil enters the valve and travels through the filter to the spool. Spool position is controlled by the CMP magnet and engine control module (ECM). When the spool is moved to the proper position, oil flow is directed through the valve and into the CMP actuator assembly. The CMP solenoid valve is a torque-to-yield design and should be replaced each time it is removed.

Scheme 32

Scheme 32: CMP Actuator Magnet

The CMP actuator magnet (752) is located in the engine front cover and is sealed by a gasket (753). The CMP actuator magnet is controlled by a 12-volt 150 Hz pulse width 0-100 percent duty cycle signal from the ECM. When energized, the solenoid uses electromagnetic force on the magnet pintle to position the spool valve of the CMP solenoid valve.

Scheme 33

Scheme 33: CMP Actuator

The CMP actuator is a vane type design that hydraulically changes angle or timing of the camshaft relative to crankshaft position. The CMP actuator allows earlier or later intake and exhaust valve opening during the 4-stroke engine cycle. The CMP actuator cannot vary the duration of valve opening or valve lift. The CMP actuator is to be serviced as an assembly. For system operation, refer to Camshaft Actuator System Description .

The CMP actuator consists of the CMP reluctor wheel (1), wheel retaining pins (2), return spring (3), front cover (4), park position pin (5), park position pin spring (6), vanes and vane springs (7), rotor (8), housing with chain sprocket (9), sealing cover/thrust plate (10), and bolts (11).

Scheme 34

Scheme 34: CMP System Operation

A CMP actuator dynamically changes valve timing events relative to piston timing by controlling camshaft position. This is sometimes referred to as variable valve timing or camshaft phasing. Variable valve timing or camshaft phasing does not change duration or lift.

By advancing camshaft timing, an improvement in low end torque can be achieved.
By retarding camshaft timing slightly, an improvement in high end power can be achieved.
By retarding camshaft timing significantly, an improvement in light load fuel economy can be achieved.

There are 5 cavities divided by vanes within the CMP actuator.

When oil is directed to the advance cavities (1), the camshaft timing is advanced.
When oil is directed to the retard cavities (2), the camshaft timing is retarded.
When oil is directed to both cavities, the camshaft is held stationary.

Scheme 35

The 6.0L LFA CMP actuator has a 46 degree range of authority. With the engine not running and no engine oil pressure to the CMP actuator, the high tension spring positions camshaft timing at the 29 degree retard park position. During normal engine operation, and based on performance requirements, the ECM may adjust camshaft timing, as required, within a range from 29 degrees retard to 17 degrees advanced.

Scheme 36

Scheme 36: CMP System Lubrication Flow and Actuator Operation

Oil enters the camshaft at the second main bearing journal (1).
Oil travels through the camshaft into the CMP actuator valve check ball (2) and filter (3).
Oil exits the valve and travels through the internal passages of the camshaft (4).
Oil exits the camshaft and enters the actuator oil entry ports.
Oil travels through the actuator and is directed back into the valve (5).
Valve spool position directs oil to the advance or retard passages of the actuator.

The valve may also, under certain conditions, be positioned in a neutral position with no flow to either the advance or retard passages of the actuator.

Scheme 37

Oil flows from the camshaft into the valve inlet (3) through the internal check ball and filter.
Oil exits the valve (2) and travels within the internal passages of the camshaft into the entry ports (7) of the actuator.
The center oil groove of the actuator is pressurized and oil reenters the valve (1).
Valve spool position directs oil out of the valve advance (4) or retard (5) ports to the actuator.

The valve may also, under certain conditions, be positioned in a neutral position with no flow to either the advance or retard passages of the actuator.

Scheme 38

Pressurized oil enters the advance cavities (1) of the actuator and moves the park pin (3) from the locked position.
As pressure increases within the advance cavities (1), the rotor and camshaft rotate clockwise advancing valve timing.
As the duty cycle decreases, the spool is repositioned and oil is sent to the retard cavities (2), rotating the rotor and camshaft counter clockwise, retarding valve timing. With a 0 percent duty cycle signal to the magnet, the spool is positioned in the fully extended position and there is full flow to the retard cavities of the actuator. As duty cycle increases to near 50 percent, flow to the retard cavities is decreased. With a 50 percent duty cycle, the spool is positioned neutral, with no flow to either the advance and retard cavities. With a 51-100 percent duty cycle, the spool is positioned to provide oil flow to advance cavities. As the duty cycle increases, the flow to advance cavities increases. With a 100 percent duty cycle, there is full flow to the advance cavities of the actuator. The above duty cycle percentage values are only a guideline, as the actual duty cycle values may vary based on engine oil temperature, solenoid magnet coil temperature, magnet coil resistance, and other specifics.

Scheme 39

Scheme 39: CMP Actuator Park Position Verification

The CMP actuator can be visually inspected to determine if the tension spring has returned the reluctor wheel and rotor to the park position.

With the reluctor wheel returned to the proper parked position, the edge of the notched area of the wheel (2) aligns with the marking (1) on the camshaft sprocket.

Scheme 40

Scheme 40: CMP Actuator Handling Safety

WARNING

Refer to Camshaft Position Actuator Removal and Installation Warning .

Scheme 41

Install tie wrap (1) to retain the reluctor wheel to the sprocket. The reluctor wheel is mounted to the actuator body with 3 roll pins.

New Product Information

The purpose of New Product Information is to highlight, or indicate, important product changes from the previous model year.

Changes may include 1 or more of the following items

Torque values and/or fastener tightening strategies
Changed engine specifications
New sealants and/or adhesives
Disassembly and assembly procedure revisions
Engine mechanical diagnostic procedure revisions
New special tools required
A component comparison from the previous year

Changed Engine Specifications

A variety of specifications have been revised based on the new design LZ1 engine. Refer to «Engine Mechanical Specifications»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-hybrid-hp2-60l-lz1__engine-mechanical-specifications) .
Specifications have been added for the active fuel management (AFM) oil pressure relief valve.

Torque Values and/or Fastener Tightening Strategies

All fasteners and threaded holes on the LZ1 engine utilize metric threads.
Cylinder head, connecting rod, crankshaft balancer, camshaft position actuator valve, and main bearing cap bolts now apply a torque and angle tightening strategy.
Certain fasteners should not be used again. Bolts, studs, or other fasteners that must be replaced, will be called out in the specific service procedure.
A new design crankshaft balancer bolt is used with a four pass tightening process.

New Sealants and/or Adhesives

Sealers and adhesives, as required, are identified within the specific service procedures. Refer to Adhesives, Fluids, Lubricants, and Sealers .

Disassembly and Assembly Procedure Revisions

Engine oil pan disassembly now includes servicing of the AFM oil pressure relief valve. Refer to Oil Pan Cleaning and Inspection .

Engine Mechanical Diagnostic Procedure Revisions

Diagnosis on a vehicle should follow a logical process. Strategy based diagnostics is a uniform approach for repairing all systems. The diagnostic flow may always be used in order to resolve a system condition. The diagnostic flow is the place to start when repairs are necessary. For a detailed explanation, refer to «Diagnostic System Check - Vehicle»(/cadillac/escalade/gmt900-2006-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) .
A diagnostic procedure has been added for testing the AFM oil pressure relief valve.

New Special Tools Required

No new service tools are required.

A Component Comparison from the Previous Year

A rivet-type plug replaces the coolant air bleed covers located at the top rear of each cylinder head. To properly repair a leaking plug, remove cylinder head from the engine, remove the plug from the cylinder head and install first design coolant air bleed cover and bolt.
A new design crankshaft balancer bolt is used with a four pass tightening process.
The oil pan assembly now includes the AFM oil pressure relief valve.

Scheme 42

Scheme 42: Lubrication Description

Callout	Component Name
200	Camshaft
209	Valve Lifter - Non-Active Fuel Management
219	Valve Lifter - Active Fuel Management
234	Camshaft Position (CMP) Actuator Solenoid Valve
235	CMP Actuator
407	Oil Pump Screen
413	Oil Pump - Variable Displacement
437	Oil Filter
451	Valve Lifter Oil Manifold
452	Valve Lifter Oil Filter
455	Active Fuel Management Oil Pressure Relief Valve
706	Oil Pressure Sensor
752	CMP Magnet

Lubrication System Description

Engine lubrication is supplied by a variable displacement vane-type oil pump assembly. The oil pump is mounted on the front of the engine block and driven directly by the crankshaft sprocket. The pump rotor and vanes rotate and draw oil from the oil pan sump through a pick-up screen and pipe. The oil is pressurized as it passes through the pump and is sent through the engine block lower oil gallery.

Pressurized oil is directed through the engine block lower oil gallery to the full flow oil filter where harmful contaminants are removed. A bypass valve is incorporated into the oil filter, which permits oil flow in the event the filter becomes restricted. The active fuel management oil pressure relief valve limits oil pressure directed to the upper oil galleries and valve lifter oil manifold assembly to 379-517 kPa (55-75 psi) maximum. When main oil pressure exceeds 379 kPa (55 psi), the oil pressure relief valve exhausts excess oil to the sump.

Oil is then directed from the filter to the upper main oil galleries and the valve lifter oil manifold assembly. Oil from the left upper oil gallery is directed to the crankshaft and camshaft bearings. Oil that has entered both the upper main oil galleries also pressurizes the valve lifter assemblies and is then pumped through the pushrods to lubricate the valve rocker arms and valve stems. Oil returning to the pan is directed by the crankshaft oil deflector. The oil pressure sensor is located at the top rear of the engine.

An oil passage at camshaft bearing location 2 permits oil flow into the center of the camshaft. Oil enters the camshaft exiting at the front and into the camshaft position (CMP) actuator solenoid valve. The CMP valve spool position is controlled by the engine control module (ECM) and CMP magnet. When commanded by the ECM, the CMP magnet repositions the CMP actuator solenoid valve spool directing pressurized oil into the CMP actuator to control valve timing. Refer to Camshaft Position Actuator and Solenoid Valve Description and Camshaft Actuator System Description .

With active fuel management activated, the ECM commands the 4 valve lifter oil manifold solenoids to open, directing oil through the engine block oil galleries to the intake and exhaust valve lifters for cylinders 1, 4, 6, and 7. With active fuel management activated, cylinders 1, 4, 6, and 7 are disabled.

Oil Pump Assembly and Operation

Callout	Component Name
408	Bolt
409	Oil Pump Housing Cover
410	Oil Pump Vane Ring
410	Oil Pump Vane Ring
412	Oil Pump Slide
413	Oil Pump Housing
414	Oil Pump Slide Seal
415	Oil Pump Slide Seal
416	Oil Pump Slide Spring
456	Oil Pump Rotor
457	Oil Pump Vane
458	Oil Pump Housing

The variable displacement vane-type oil pump is able to regulate oil pressure in the engine by internally regulating the pump's outlet flow. As outlet pressure increases, pump displacement decreases.

The benefits of a variable displacement vane-type oil pump are

Requires less drive torque and improves fuel economy
Provides increased low-speed oil pressure for improved variable valve timing and active fuel management systems operation
Quiet operation, especially during cold and/or high speed operation
Does not tend to over-pressurize the engine during extreme cold starts
Reduction in high speed oil aeration
Improved reliability - no relief valve required

Scheme 43

Scheme 43: Increased Pressure/Flow Condition

Oil from the oil pan sump is drawn into the pump inlet (1). The rotor and vanes of the pump are rotated in a clockwise direction pressurizing the oil (5). Pressurized oil exits at the pump outlet (6) and continues to the engine oil galleries. In this mode of operation, the spring (2) pressure is greater than the hydraulic force of the pressurized cavity (4) on the outer area of the slide and the slide (3) is positioned fully clockwise.

Scheme 44

Scheme 44: Decreased Pressure/Flow Condition

Oil from the oil pan sump is drawn into the pump inlet (1). The rotor and vanes of the pump are rotated in a clockwise direction pressurizing the oil (4). Pressurized oil exits at the pump outlet (5) and continues to the engine oil galleries. In this mode of operation, the hydraulic force of the oil pressurizes the cavity (4) on the outer area of the slide (3). When the hydraulic force increases sufficiently, it overcomes the spring (2) force and pivots the slide counterclockwise. As the slide pivots counterclockwise, the pump outlet pressure and displacement decreases, which in turn reduces the required drive torque.

Scheme 45

Scheme 45: Lubrication Description - Cylinder Deactivation (Active Fuel Management) Off

Pressurized oil is directed through the engine block lower oil gallery to the full flow oil filter where harmful contaminants are removed. A bypass valve is incorporated into the oil filter, which permits oil flow in the event the filter becomes restricted. A second valve, the active fuel management oil pressure relief valve is incorporated into the oil pan. The active fuel management oil pressure relief valve limits oil pressure directed to the upper oil galleries and oil manifold assembly to 379-517 kPa (55-75 psi) maximum.

Oil returning to the pan is directed by the crankshaft oil deflector. The oil pressure sensor is located at the top rear of the engine. With active fuel management deactivated, or OFF, there is no signal from the ECM to the 4 manifold solenoids. No oil is directed through the manifold and to the 4 active fuel management intake and exhaust valve lifters, cylinders 1, 4, 6, and 7. Refer to Cylinder Deactivation (Active Fuel Management) System Description , Camshaft Position Actuator and Solenoid Valve Description and Camshaft Actuator System Description .

Scheme 46

Scheme 46: Lubrication Description - Cylinder Deactivation (Active Fuel Management) On

Pressurized oil is directed through the engine block lower oil gallery to the full flow oil filter where harmful contaminants are removed. A bypass valve is incorporated into the oil filter, which permits oil flow in the event the filter becomes restricted. A second valve, the active fuel management oil pressure relief valve is incorporated into the oil pan. The active fuel management oil pressure relief valve limits oil pressure directed to the upper oil galleries and oil manifold assembly to 379-517 kPa (55-75 psi) maximum.

Oil returning to the pan is directed by the crankshaft oil deflector. The oil pressure sensor is located at the top rear of the engine.

With active fuel management activated, or ON, the ECM commands the 4 manifold solenoids to open, directing oil through the manifold and to the 4 active fuel management intake and exhaust valve lifters, cylinders 1, 4, 6, and 7. Refer to Cylinder Deactivation (Active Fuel Management) System Description , Camshaft Position Actuator and Solenoid Valve Description and Camshaft Actuator System Description .

Cleanliness and Care

Throughout this section, it should be understood that proper cleaning and protection of machined surfaces and friction areas is part of the repair procedure. This is considered standard shop practice, even if not specifically stated.
When any internal engine parts are serviced, care and cleanliness is important.
When components are removed for service, they should be marked, organized or retained in a specific order for assembly. Refer to «Separating Parts»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-description-and-operation__separating-parts) .
At the time of installation, components should be installed in the same location and with the same mating surface as when removed.
An automobile engine is a combination of many machined, honed, polished and lapped surfaces with tolerances that are measured in millimeters or thousandths of an inch. These surfaces should be covered or protected to avoid component damage.
A liberal coating of clean engine oil should be applied to friction areas during assembly.
Proper lubrication will protect and lubricate friction surfaces during initial operation.

Separating Parts

IMPORTANT

Many internal engine components will develop specific wear patterns on their friction surfaces. When disassembling the engine, internal components MUST be separated, marked, or organized in a way to ensure installation to their original location and position.

Separate, mark, or organize the following components

Piston and the piston pin
Piston to the specific cylinder bore
Piston rings to the piston
Connecting rod location and orientation to the crankshaft journal
Connecting rod to the bearing cap A paint stick or etching/engraving type tool are recommended. Stamping the connecting rod or cap near the bearing bore may affect component geometry.
Crankshaft main and connecting rod bearings
Camshaft and valve lifters
Valve lifters, lifter guides, pushrods and rocker arm assemblies
Valve to the valve guide
Valve spring to the cylinder head location
Engine block main bearing cap location and direction
Oil pump drive and driven gears

J 28410: Gasket Remover

For equivalent regional tools, refer to Special Tools .

Gasket Use and Applying Sealants

Do not use any gasket again unless specified.
Gaskets that can be used again will be identified in the service procedure.
Do not apply sealant to any gasket or sealing surface unless called out in the service information.

Separating Components

Use a rubber mallet to separate components.
Bump the part sideways to loosen the components.
Bumping should be done at bends or reinforced areas to prevent distortion of parts.

Cleaning Gasket Surfaces

Remove all gasket and sealing material from the part using the J 28410: remover or equivalent.
Care must be used to avoid gouging or scraping the sealing surfaces.
Do not use any other method or technique to remove sealant or gasket material from a part.
Do not use abrasive pads, sand paper, or power tools to clean the gasket surfaces. These methods of cleaning can cause damage to the component sealing surfaces. Abrasive pads also produce a fine grit that the oil filter cannot remove from the oil. This grit is abrasive and has been known to cause internal engine damage.

Assembling Components

When assembling components, use only the sealant specified or equivalent in the service procedure.
Sealing surfaces should be clean and free of debris or oil.
Specific components such as crankshaft oil seals or valve stem oil seals may require lubrication during assembly.
Components requiring lubrication will be identified in the service procedure.
When applying sealant to a component, apply the amount specified in the service procedure.
Tighten bolts to specifications. Do not overtighten.

J 28410: Gasket Remover

For equivalent regional tools, refer to Special Tools .

Do not use any gasket again unless specified.
Gaskets that can be used again will be identified in the service procedure.
Do not apply sealant to any gasket or sealing surface unless called out in the service information.

Use a rubber mallet to separate components.
Bump the part sideways to loosen the components.
Bumping should be done at bends or reinforced areas to prevent distortion of parts.

Remove all gasket and sealing material from the part using the J 28410: remover or equivalent.
Care must be used to avoid gouging or scraping the sealing surfaces.
Do not use any other method or technique to remove sealant or gasket material from a part.
Do not use abrasive pads, sand paper, or power tools to clean the gasket surfaces. These methods of cleaning can cause damage to the component sealing surfaces. Abrasive pads also produce a fine grit that the oil filter cannot remove from the oil. This grit is abrasive and has been known to cause internal engine damage.

When assembling components, use only the sealant specified or equivalent in the service procedure.
Sealing surfaces should be clean and free of debris or oil.
Specific components such as crankshaft oil seals or valve stem oil seals may require lubrication during assembly.
Components requiring lubrication will be identified in the service procedure.
When applying sealant to a component, apply the amount specified in the service procedure.
Tighten bolts to specifications. Do not overtighten.

Tools and Equipment

Special tools are listed and illustrated throughout this section, with a complete listing at the end of the section. These tools, or their equivalents, are specially designed to quickly and safely accomplish the operations for which they are intended. The use of these special tools also minimize possible damage to engine components. Some precision measuring tools are required for inspection of certain critical components. Torque wrenches and a torque angle meter are necessary for the proper tightening of various fasteners.

To properly service the engine assembly, the following items should be readily available

Approved eye protection and safety gloves
A clean, well lit, work area
A suitable parts cleaning tank
A compressed air supply
Trays or storage containers to keep parts and fasteners organized
An adequate set of hand tools
Approved engine repair stand
An approved engine lifting device that will adequately support the weight of the components

Illustration Tool Number/Description EN-46330 Timing Belt Tensioner Retaining Pin EN-46999 Active Fuel Management Tester EN-46999-1 Active Fuel Management Tester Air Adapter EN-46999-5 Active Fuel Management Tester Harness - Small Block V8 EN-47971 Oil Pressure Gauge Adapter EN-48853 Front Cover Alignment Tool J 6125-1B Slide Hammer with Adapter J 7872 Magnetic Base Dial Indicator Set J 8001 Dial Indicator Set J 8037 Ring Compressor J 8062 Valve Spring Compressor - Head Off J 8087 Cylinder Bore Gauge J 8089 Carbon Removal Brush J 8433 Two Jaw Puller J 8520 Cam Lobe Lift Indicator J 9666 Valve Spring Tester J 21366 Converter Holding Strap J 21867 Pressure Gauge J-21867-16 Oil Pressure Adapter J 22794 Spark Plug Port Adapter J 24270 Cylinder Bore Ridge Reamer J 28410 Gasket Remover J 28428-E High-Intensity Black Light Kit J 33049 Camshaft Bearing Service Set J 35667-A Cylinder Head Leakdown Tester J 37378-1 Valve Guide Reamer J 38606 Valve Spring Compressor J 41476 Front and Rear Cover Alignment Tool J 41478 Crankshaft Front Oil Seal Installer J 41479 Crankshaft Rear Oil Seal Installer J 41480 Front and Rear Cover Alignment J 41556 Connecting Rod Guide J 41558 Crankshaft Sprocket Remover J 41665 Crankshaft Balancer and Sprocket Installer J 41712 Oil Pressure Switch Socket J 41798 Engine Lift Bracket J 41816-A Crankshaft Balancer Remover J 41816-2 Crankshaft End Protector J 41818 Crankshaft Bearing Cap Remover J 42385-100 Head/Main Bolt Thread Repair Kit J 42385-200 Common Thread Repair Kit J 42385-300 Fixtures and Hardware Kit J 42386-A Flywheel Holding Tool J 43690 Rod Bearing Clearance Checking Tool J 43690-100 Rod Bearing Clearance Checking Tool - Adapter Kit J 45059 Angle Meter J 45299 Engine Preluber