Engine Mechanical - 3.4l (la1) Buick Rendezvous I

Fastener Tightening Specifications

Fastener Tightening Specifications

Engine Mechanical Specifications

Engine Mechanical Specifications

Sealers, Adhesives, and Lubricants

Sealers, Adhesives, and Lubricants

Scheme 1

Scheme 2

Scheme 3

Scheme 4

Scheme 5

The Vehicle Identification Number - VIN derivative (1) for 3100 LG8 and 3400 LA1 is stamped or laser etched on the left side rear of the engine block. The Vehicle Identification Number - VIN derivative is nine digits long and can be used to determine if a vehicle contains the original engine.

1. The first digit identifies the division.
2. The second digit identifies the model year.
3. The third digit identifies the assembly plant.
4. The fourth through ninth digits are the last six digits of the Vehicle Identification Number - VIN.

Diagnostic Starting Point - Engine Mechanical

Begin the system diagnosis by reviewing the Disassembled Views , Engine Component Description , Drive Belt System Description , Lubrication Description , and New Product Information . Reviewing the description and operation information will help you determine the correct symptom diagnostic procedure when a malfunction exists. Reviewing the description and operation information will also help you determine if the condition described by the customer is normal operation. Refer to Symptoms - Engine Mechanical in order to identify the correct procedure for diagnosing the system and where the procedure is located.

Strategy Based Diagnostics

1. Perform «Diagnostic System Check - Engine Controls»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-diagnostic-information-and-procedures) in Engine Controls before using the symptom tables if applicable.
2. Review the system operations in order to familiarize yourself with the system functions. Refer to «Disassembled Views»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) , «Engine Component Description»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1__engine-component-description) , Drive Belt System Description, «Lubrication Description»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) , and «New Product Information»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1__new-product-information) .

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 problem. The diagnostic flow is the place to start when repairs are necessary. For a detailed explanation, refer to Strategy Based Diagnosis in General Information.

Visual/Physical Inspection

1. Inspect for aftermarket devices which could affect the operation of the Engine. Refer to «Checking Aftermarket Accessories»(/buick/rendezvous/i-2001-2007/remont/body-electrical/#wiring-systems-diagnostic-information-and-procedures__checking-aftermarket-accessories) in Wiring Systems.
2. Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.
3. Check for the correct oil level, proper oil viscosity, and correct filter application.
4. 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.
5. 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

1. «Base Engine Misfire without Internal Engine Noises»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1__base-engine-misfire-without-internal-engine)
2. «Base Engine Misfire with Abnormal Internal Lower Engine Noises»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1__base-engine-misfire-with-abnormal-internal)
3. «Base Engine Misfire with Abnormal Valve Train Noise»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1__base-engine-misfire-with-abnormal-valve)
4. «Base Engine Misfire with Coolant Consumption»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1__base-engine-misfire-with-coolant-consumption)
5. «Base Engine Misfire with Excessive Oil Consumption»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1__base-engine-misfire-with-excessive-oil)
6. «Engine Compression Test»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1__engine-compression-test)
7. «Engine Noise on Start-Up, but Only Lasting a Few Seconds»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1__engine-noise-on-start-up-but-only)
8. «Upper Engine Noise, Regardless of Engine Speed»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1__upper-engine-noise-regardless-of-engine)
9. «Lower Engine Noise, Regardless of Engine Speed»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1__lower-engine-noise-regardless-of-engine)
10. «Engine Noise Under Load»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1__engine-noise-under-load)
11. «Engine Will Not Crank - Crankshaft Will Not Rotate»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1__engine-will-not-crank-crankshaft)
12. «Oil Consumption Diagnosis»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1__oil-consumption-diagnosis)
13. «Oil Pressure Diagnosis and Testing»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1)
14. «Oil Leak Diagnosis»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1)
15. «Drive Belt Chirping Diagnosis»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1)
16. «Drive Belt Squeal Diagnosis»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1)
17. «Drive Belt Whine Diagnosis»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1)
18. «Drive Belt Rumbling Diagnosis»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1)
19. «Drive Belt Vibration Diagnosis»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1)
20. «Drive Belt Falls Off Diagnosis»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1)
21. «Drive Belt Excessive Wear Diagnosis»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1)
22. «Drive Belt Tensioner Diagnosis»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1__drive-belt-tensioner-diagnosis)

Base Engine Misfire without Internal Engine Noises

Base Engine Misfire without Internal Engine Noises

Base Engine Misfire with Abnormal Internal Lower Engine Noises

Base Engine Misfire with Abnormal Internal Lower Engine Noises

Base Engine Misfire with Abnormal Valve Train Noise

Base Engine Misfire with Abnormal Valve Train Noise

Base Engine Misfire with Coolant Consumption

Base Engine Misfire with Coolant Consumption

Base Engine Misfire with Excessive Oil Consumption

Base Engine Misfire with Excessive Oil Consumption

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

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

Upper Engine Noise, Regardless of Engine Speed

Upper Engine Noise, Regardless of Engine Speed

Lower Engine Noise, Regardless of Engine Speed

Lower Engine Noise, Regardless of Engine Speed

Engine Noise Under Load

Engine Noise Under Load

Engine Will Not Crank - Crankshaft Will Not Rotate

Engine Will Not Crank - Crankshaft Will Not Rotate

Coolant in Combustion Chamber

Coolant in Combustion Chamber

Coolant in Engine Oil

Coolant in Engine Oil

Engine Compression Test

A compression pressure test of the engine cylinders determines the condition of the rings, the valves, and the head gasket.

1. Disable the ignition.
2. Disable the fuel systems.
3. Remove the spark plugs from all the cylinders.
4. Remove the air duct from the throttle body.
5. Block the throttle plate in the open position.
6. Measure the engine compression, using the following procedure: Firmly install the compression gauge to the spark plug hole. Have an assistant crank the engine through at least 4 compression strokes in the testing cylinder. Record the readings on the gauge at each stroke. Disconnect the gauge. Repeat the compression test for each cylinder.
7. Record the compression readings from all of the cylinders. The lowest reading should not be less than 70 percent of the highest reading. No cylinder reading should be less than 689 kPa (100 psi).
8. The following list contains examples of the possible measurements: When the compression measurement is normal, the compression builds up quickly and evenly to the specified compression on each cylinder. When the compression is low on the first stroke and tends to build up on the following strokes, but does not reach the normal compression, the piston rings may be the cause. If the compression improves considerably with the addition of three squirts of oil, the piston rings may be the cause. When the compression is low on the first stroke and does not build up in the following strokes, the valves may be the cause. The addition of oil does not affect the compression, the valves may be the cause. When the compression is low on two adjacent cylinders, or coolant is present in the crankcase, the head gasket may be the cause.
9. Remove the block from the throttle plate.
10. Install the air duct to the throttle body.
11. Install the spark plugs.
12. Install the Powertrain Control Module (PCM) fuse.
13. Install the ignition fuse to the I/P fuse block.

Tools Required

J 35667-A Cylinder Head Leakdown Tester. See Special Tools and Equipment .

Testing Procedure

With the use of air pressure, a cylinder leakage test will aid in the diagnosis. Use the cylinder leakage test in conjunction with the engine compression test in order to isolate the cause of leaking cylinders.

1. Disconnect the negative battery cable.
2. Remove the spark plugs. Refer to «Spark Plug Replacement»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-introduction-service-replacement) in Engine Controls.
3. Install the J 35667-A . See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
4. Measure each cylinder on the compression stroke, with both valves closed.
5. Apply air pressure, using the J 35667-A . See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) . Refer to the manufacturer's instructions.
6. Record the cylinder leakage readings for each cylinder.
7. Inspect the 4 primary areas in order to properly diagnose a leaking cylinder.
8. If air is heard from the intake or exhaust system, perform the following procedure: Remove the valve rocker arm cover of the suspect cylinder head. Ensure that both valves are closed. Inspect the cylinder head for a broken valve spring. Remove and inspect the suspect cylinder head. Refer to «Cylinder Head Cleaning and Inspection»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1__cylinder-head-cleaning-and-inspection) .
9. If air is heard from the crankcase system at the crankcase oil filler tube, perform the following procedure: Remove the piston from the suspect cylinder. Inspect the piston and connecting rod assembly. Refer to «Piston, Connecting Rod, and Bearings Cleaning and Inspection»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) . Inspect the engine block. Refer to «Engine Block Cleaning and Inspection»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1__engine-block-cleaning-and-inspection) .
10. If bubbles are found in the radiator, perform the following procedure: Remove and inspect both cylinder heads. Refer to «Cylinder Head Cleaning and Inspection»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1__cylinder-head-cleaning-and-inspection) . Inspect the engine block. Refer to «Engine Block Cleaning and Inspection»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1__engine-block-cleaning-and-inspection) .
11. Remove the J 35667-A . See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
12. Install the spark plugs. Refer to «Spark Plug Replacement»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-introduction-service-replacement) in Engine Controls.
13. Connect the negative battery cable. Refer to Battery Disconnect Caution in Cautions and Notices.

Oil Consumption Diagnosis

An engine that has excessive oil consumption uses 0.9 L (1 qt) of oil, or more, within 3 200 km (2,000 mi). The following list indicates the conditions and corrections of excessive oil consumption

1. An improperly read oil level indicator dipstick Inspect the oil level while the vehicle is parked on a level surface. Allow adequate drain-down time.
2. Improper oil viscosity Use the recommended SAE viscosity for prevailing temperatures.
3. Continuous high-speed driving
4. Severe hauling, such as a trailer. This causes decreased oil mileage.
5. A malfunctioning crankcase ventilation system
6. External oil leaks Tighten the bolts, as needed. Replace the gaskets and seals, as needed.
7. Worn or omitted valve guides and/or valve stem seals Ream the guides. Install oversized service valves and/or new valve stem seals.
8. Broken or worn piston rings
9. Improperly installed or unseated piston rings
10. Improperly installed or improperly fitted piston
11. Plugged cylinder head gasket oil drain holes
12. Damaged intake gaskets

Low or No Oil Pressure

The following conditions may cause low or no oil pressure

1. Low oil level Fill to the full mark on the oil level indicator.
2. Incorrect or malfunctioning oil pressure switch Replace the oil pressure switch.
3. Incorrect or malfunctioning oil pressure gage Replace the oil pressure gage.
4. Improper oil viscosity or diluted oil Install oil of proper viscosity for expected temperature. Install new oil if the oil is diluted.
5. A worn or dirty oil pump Clean or replace the oil pump.
6. A plugged oil filter Replace the oil filter.
7. A loose or plugged oil pickup screen Replace the oil pickup screen.
8. A hole in the oil pickup tube Replace the oil pickup tube.
9. Excessive bearing clearance Replace the bearings.
10. Cracked, porous, or plugged oil gallery Repair or replace the engine block.
11. Missing or improperly installed gallery plugs Install or repair the plugs as needed.
12. A stuck pressure regulator valve Inspect the pressure regulator valve for sticking in the bore. Inspect the bore for scoring and burrs.
13. A worn or poorly machined camshaft Replace the camshaft.
14. Worn valve guides Repair the valve guides as needed.

J 25087-C Oil Pressure Tester

Test Procedure

If the vehicle has low oil pressure complete the following steps

1. Inspect the oil level.
2. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/buick/rendezvous/i-2001-2007/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) in General Information.
3. Remove the oil filter.
4. Assemble the plunger valve in the large hole of the J 25087-C base. Insert the hose in the small hole of the J 25087-C base. Connect the gage to the end of the hose.
5. Insert the flat side of the rubber plug in the bypass valve without depressing the bypass valve.
6. Install the J 25087-C on the filter mounting pad.
7. Start the engine.
8. Inspect the overall oil pressure, the oil pressure switch, and for noisy lifters. Ensure that the engine is at operating temperature before inspecting the oil pressure. The oil pressure should be approximately 414 kPa (60 psi) at 1,850 RPM using 5W-30 engine oil.
9. If adequate oil pressure is indicated, test the oil pressure switch.
10. If a low reading is indicated, press the valve on the tester base in order to isolate the oil pump and/or its components from the lubricating system. An adequate reading at this time indicates a good pump and the previous low pressure was due to worn bearings, etc. A low reading while pressing the valve indicates a faulty pump.

J 28428-E High Intensity Black Light Kit

Diagnosis Procedure

You may 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 leak and the cause of leak.

Locating and Identifying the Leak

Use the visual inspection method in order to determine if the leaking fluid is one of the following items

1. Engine oil
2. Transmission fluid
3. Power steering fluid
4. Brake fluid
5. Some other fluid
6. Engine coolant
7. Fuel

Visual Inspection Method

Complete the following steps in order to perform the visual inspection method

1. Bring the vehicle to normal operating temperature.
2. Park the vehicle over a large sheet of paper, or other clean surface.
3. Wait several minutes, then inspect for dripping fluids.
4. Identify the type of fluid, and the approximate location of the leak.
5. Visually inspect the suspected area. Use a small mirror if necessary.
6. Inspect for leaks at sealing surfaces, fittings, or from cracked or damaged components.
7. If you cannot locate the leak, perform the following steps: Completely clean the entire engine and surrounding components. Operate the vehicle for several miles at normal operation temperature and at varying speeds. Park the vehicle over a large sheet of paper, or other clean surface. Wait several minutes, then inspect for dripping fluids. Identify the type of fluid, and the approximate location of the leak. Visually inspect the suspected area. Use a small mirror if necessary.
8. If you still cannot locate the leak, use the powder method or the black light and dye method.

Powder Method

1. Completely clean the entire engine and surrounding components.
2. Apply an aerosol-type powder, baby powder, foot powder, etc., to the suspected area.
3. Operate the vehicle for several miles at normal operation temperature and at varying speeds.
4. Identify the type of fluid, and the approximate location of the leak, from the discolorations in the powder surface.
5. Visually inspect the suspected area. Use a small mirror to assist in looking at hard to see areas. Refer to Possible Causes for Leaks if necessary.

Black Light and Dye Method

A dye and light kit is available for finding leaks.

1. Use the J 28428-E or the equivalent. Refer to the manufacturer's instructions when using the tool.
2. Visually inspect the suspected area. Use a small mirror if necessary Refer to Possible Causes for Leaks if necessary.

Possible Causes for Leaks

Inspect the vehicle for the following conditions

1. Higher than recommended fluid levels
2. Higher than recommended fluid pressures
3. Plugged or malfunctioning fluid filters or pressure bypass valves
4. Plugged or malfunctioning engine ventilation system
5. Improperly tightened or damaged fasteners
6. Cracked or porous components
7. Improper sealants or gaskets where required
8. Improper sealant or gasket installation
9. Damaged or worn gaskets or seals
10. Damaged or worn sealing surfaces

Crankcase Ventilation System Inspection/Diagnosis

1. Disconnect the PCV hose.
2. Start the engine.
3. Check for vacuum at the hose. If there is no vacuum, check for a plugged hose or manifold port. Check for a hose that collapses when blocked (vacuum applied). Replace the plugged or the deteriorated hoses.
4. Allow the engine to idle at normal operating temperature.
5. Remove the engine oil dipstick and install a vacuum gage on the dipstick tube.
6. Block off the PCV system fresh air intake passage.
7. Run the engine at 1500 RPM for 30 seconds, then read vacuum gage while engine is running at 1500 RPM. If vacuum is present, this indicates that the crankcase ventilation system is functioning properly. If no vacuum is indicated, the engine may not be sealed and is drawing in outside air. Check the valve covers, the oil pan gasket or other sealing areas for leaks. If the vacuum gage registers a pressure, or if a vacuum gage is pushed out of dipstick tube, check for a plugged PCV port, a plugged hose or an excessive engine blow-by.

Diagnostic Aids

The symptom may be intermittent due to moisture on the drive belt(s) or the pulleys. It may be necessary to spray a small amount of water on the drive belt(s) in order to duplicate the customers concern. If spraying water on the drive belt(s) duplicates the symptom, cleaning the belt pulleys may be the probable solution.

A loose or improper installation of a body component, a suspension component, or other items of the vehicle may cause the chirping noise.

Test Description

The number(s) below refer to the step number(s) on the diagnostic table.

1. 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.
2. 3: The noise may be an internal engine noise. Removing the drive belt and operating the engine for a brief period will verify the noise is related to the drive belt. When removing the drive belt(s) 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.
3. 4: Inspect all drive belt pulleys for pilling. Pilling is the small balls or pills or it may be strings in the drive belt grooves from the accumulation of rubber dust.
4. 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 misalign pulley using a straight edge in the pulley grooves across two or three pulleys. If a misalign pulley is found refer to that accessory drive component for the proper installation procedure for that pulley.
5. 10: Inspecting of the fasteners can eliminate the possibility that a wrong bolt, nut, spacer, or washer was installed.
6. 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.
7. 14: Replacing the drive belt when it is not damaged or there is not excessive pilling will only be a temporary repair.

Drive Belt Chirping Diagnosis

A loose or improper installation of a body component, a suspension component, or other items of the vehicle may cause the squeal noise.

If the noise is intermittent, verify the accessory drive components by varying their loads making sure they are operated to their maximum capacity. An overcharged A/C system, power steering system with a pinched hose or wrong fluid, or a generator failing are suggested items to inspect.

The number(s) below refer to the step number(s) on the diagnostic table.

1. 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
2. 3: The noise may be an internal engine noise. Removing the drive belt and operating the engine for a brief period will verify the squeal noise is the drive belt(s) or an accessory drive component. 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.
3. 4: This test is to verify that an accessory drive component does not have a seized bearing. With the belt remove test the bearings in the accessory drive components for turning smoothly. Also test the accessory drive components with the engine operating by varying the load on the components to verify that the components operate properly.
4. 5: 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.
5. 6: This test is to verify that the drive belt(s) 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.
6. 7: 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 misalign pulley using a straight edge in the pulley grooves across two or three pulleys. If a misalign pulley is found refer to that accessory drive component for the proper installation procedure for that pulley.
7. 8: This test is to verify that the pulleys are the correct diameter or width. Using a known good vehicle compare the pulley sizes.

Drive Belt Squeal Diagnosis

The drive belt(s) will not cause the whine noise.

If the whine noise is intermittent, verify the accessory drive components by varying their loads making sure they are operated to their maximum capacity. Such items but not limited to may be an A/C system overcharged, the power steering system restricted or the wrong fluid, or the generator failing.

The number(s) below refer to the step number(s) on the diagnostic table.

1. 3: This test is to verify that the noise is being caused by the drive belt(s) or the accessory drive components. 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.
2. 4: The inspection should include checking the drive belt tensioner and the drive belt idler pulley bearings. The drive belt(s) may have to be installed and the accessory drive components operated separately by varying their loads. Refer to the suspected accessory drive component for the proper inspection and replacement procedure.

Drive Belt Whine Diagnosis

Vibration from the engine operating may cause a body component or another part of the vehicle to make rumbling noise.

The drive belt(s) may have a 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(s), completing the diagnostic table, and the noise is only heard when the drive belt(s) is 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 number(s) below refer to the step number(s) on the diagnostic table.

1. 2: This test is to verify that the symptom is present during diagnosing. Other vehicle components may cause a similar symptom.
2. 3: This test is to verify that the drive belt(s) is causing the rumbling noise. Rumbling noise may be confused with an internal engine noise due to the similarity in the description. Remove only one drive belt at a time if the vehicle has multiple drive belts. 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.
3. 4: Inspecting the drive belt(s) is to ensure that it is not causing a 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 our felt as a lump in the belt.
4. 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.

Drive Belt Rumbling Diagnosis

The accessory drive components can have an affect on engine vibration. Such as but not limited to the A/C system over charged, the power steering system restricted or the incorrect fluid, or an extra load on the generator. To help identify an intermittent or an improper condition, vary the loads on the accessory drive components.

The number(s) below refer to the step number(s) on the diagnostic table.

1. 2: This test is to verify that the symptom is present during diagnosing. Other vehicle components may cause a similar symptom such as the exhaust system, or the drivetrain.
2. 3: This test is to verify that the drive belt(s) or accessory drive components may be causing the vibration. 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.
3. 4: The drive belt(s) may cause a vibration. While the drive belt(s) is removed this is the best time to inspect the condition of the belt.
4. 6: Inspecting of the fasteners can eliminate the possibility that a wrong bolt, nut, spacer, or washer was installed.
5. 8: This step should only be performed if the water pump is driven by the drive belt. Inspect the water pump shaft for being bent. Also inspect the water pump bearings for smoothness and excessive play. Compare the water pump with a known good water pump.
6. 9: Accessory drive component brackets that are bent, cracked, or loose may put extra strain on that accessory component causing it to vibrate.

Drive Belt Vibration Diagnosis

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

The number(s) below refer to the step number(s) on the diagnostic table.

1. 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.
2. 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 misalign pulley using a straight edge in the pulley grooves across two or three pulleys. If a misalign pulley is found refer to that accessory drive component for the proper installation procedure of that pulley.
3. 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.
4. 6: Accessory drive component brackets that are bent or cracked may will let the drive belt fall off.
5. 7: Inspecting 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.

Drive Belt Falls Off Diagnosis

Excessive wear on a drive belt(s) 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(s) 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(s) fall off.

The number(s) below refer to the step number(s) on the diagnostic table.

1. 2: The inspection is to verify the drive belt(s) is correctly installed on all of the drive belt pulleys. Wear on the drive belt(s) may be caused by mis-positioning the drive belt(s) by one groove on a pulley.
2. 3: The installation of a drive belt that is two wide or two narrow will cause wear on the drive belt. The drive belt ribs should match all of the grooves on all of the pulleys.
3. 4: This inspection is to verify the drive belt(s) 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(s) should not come in contact with an engine or a body component when snapping the throttle.

Drive Belt Excessive Wear Diagnosis

Drive Belt Tensioner Diagnosis

Drive Belt Tensioner Diagnosis

Removal Procedure

1. Rotate the drive belt tensioner in order to release the pressure on the drive belt.
2. Remove the drive belt.

Installation Procedure

1. Install the drive belt to all of the pulleys except the generator pulley.
2. Rotate the drive belt tensioner in order to install the drive belt over the generator pulley.
3. Ensure that the drive belt is properly routed.

1. Remove the drive belt. Refer to «Drive Belt Replacement»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
2. Remove the drive belt tensioner bolt.
3. Remove the drive belt tensioner.

1. Install the drive belt tensioner.
2. Install the drive belt tensioner bolt. Tighten: Tighten the bolt to 50 N.m (37 lb ft).
3. Install the drive belt. Refer to «Drive Belt Replacement»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .

1. Remove the drive belt. Refer to «Drive Belt Replacement»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
2. Remove the drive belt idler pulley bolt.
3. Remove the drive belt idler pulley.

1. Install the drive belt idler pulley.
2. Install the drive belt idler pulley bolt. Tighten: Tighten the drive belt idler pulley bolt to 50 N.m (37 lb ft).
3. Install the drive belt. Refer to «Drive Belt Replacement»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .

Engine Mount Inspection

Note. In order to avoid oil pan damage and possible engine failure, insert a block of wood that spans the width of the oil pan bottom between the oil pan and the jack support.

1. Raise the engine in order to remove the weight from the engine mount and create slight tension in the rubber.
2. Observe the engine mount while raising the engine. Replace the engine mount if the engine mount exhibits any of the following conditions: The hard rubber surface is covered with heat check cracks. The rubber is separated from the metal plate of the engine mount. The rubber is split through the center of the engine mount.
3. If there is movement between the metal plate of the engine mount and its attaching points, lower the engine on the engine mount. Tighten the bolts or nuts attaching the engine mount to the frame or engine mount bracket. Refer to «Engine Mount Bracket Replacement»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .

Engine Support Fixture

Tools Required

1. J 28467-34 Lift Hook Wing Nut and Washer (2). See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
2. J 28467-6A Bracket Assembly (2). See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
3. J 28467-7A Bolt Hook (2). See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
4. J 28467-500 Engine Support Fixture. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
5. J 28467-B Universal Engine Support Fixture. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
6. J 45057 Engine Support Bar Assembly. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
7. J 45057-2 Lower Support Bar. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .

1. Remove the right engine mount strut. Refer to «Engine Mount Strut Replacement - Right»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
2. Install the J 45057 to the right engine mount strut bracket (1). See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
3. Install the J 45057 to the left side engine lift bracket. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
4. Install the J 45057 to the right rear engine lift bracket. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
5. For Buick vehicles, remove the headlamps. Refer to «Headlamp Assembly or Headlamp Bulb Replacement (Aztek)»(/buick/rendezvous/i-2001-2007/remont/exterior-lights/#lighting-systems) or «Headlamp Assembly or Headlamp Bulb Replacement (Rendezvous)»(/buick/rendezvous/i-2001-2007/remont/exterior-lights/#lighting-systems) in Lighting Systems.
6. Disconnect the hood strut assist rods from the fenders.
7. Carefully open and secure the hood in a 90 degree position.
8. Install a J 28467-B and retention pin to each end of the J 28467-500 beam (2). See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
9. Position the J 28467-B to the left and right side inner fender rails in order to install the J 28467-500 . See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
10. Assemble the following to create 2 lift hook assemblies as shown: J 28467-34 . See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) . J 28467-6A . See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) . J 28467-7A . See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
11. Install the 2 lift hook assemblies (1) to the J 45057-2 (2). See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
12. Install the right side lift hook assembly to the right side hole in the J 45057 (2). See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
13. Install the left side lift hook assembly to the left side hole in the J 45057 (2). See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
14. Gently tighten the J 28467-34 lift hook wing nuts. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
15. Raise the vehicle. Refer to «Lifting and Jacking the Vehicle»(/buick/rendezvous/i-2001-2007/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) in General Information.
16. Remove the lower air baffle. Refer to «Radiator Air Baffle Assemblies and Deflectors»(/buick/rendezvous/i-2001-2007/remont/cooling-fan/#engine-cooling-system) in Engine Cooling.
17. Remove the engine mount left bolt.
18. Install the J 45057-2 to the radiator core support. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
19. Use the engine mount bolt to install the J 45057-2 to the engine. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
20. Ensure that the J 45057-2 is assembled properly and hand tighten the fasteners. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .

1. Disconnect the battery ground (negative) cable. Refer to «Battery Negative Cable Disconnect/Connect Procedure (LA1)»(/buick/rendezvous/i-2001-2007/remont/charging-system/#battery-charging-system-and-starting-system) in Engine Electrical.
2. Remove the throttle body air inlet duct. Refer to «Air Cleaner Intake Duct Replacement»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-introduction-service-replacement) in Engine Controls - 3.4L.
3. Remove the engine mount struts. Refer to «Engine Mount Strut Replacement - Left»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) or «Engine Mount Strut Replacement - Right»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
4. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/buick/rendezvous/i-2001-2007/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) in General Information.
5. Remove the three-way catalytic converter pipe from the engine right side exhaust manifold. Refer to «Catalytic Converter Replacement»(/buick/rendezvous/i-2001-2007/remont/exhaust/#engine-exhaust-system) in Engine Exhaust.
6. Remove the right front wheel and tire. Refer to «Tire and Wheel Removal and Installation»(/buick/rendezvous/i-2001-2007/remont/wheel-tire-system/#tires-and-wheels) in Tires and Wheels.
7. Remove the right engine splash shield. Refer to «Splash Shield Replacement - Engine»(/buick/rendezvous/i-2001-2007/remont/exterior-body-panels/#body-front-end) in Body Front End.
8. Remove the engine mount lower nuts.
9. Use a utility stand and a block of wood in order to raise the engine.
10. For FWD, remove the engine mount bracket-to-oil pan bolts.
11. For AWD, remove the engine mount bracket-to-oil pan bolts (1).
12. For AWD, remove the engine mount bracket-to engine bolts (2).
13. Remove the engine mount and the engine mount bracket.
14. Remove the engine mount upper nuts.
15. Remove the engine mount from the engine mount bracket.

1. Install the engine mount to the engine mount bracket.
2. Install the engine mount upper nuts. Tighten: Tighten the engine mount upper nuts to 53 N.m (39 lb ft).
3. Install the engine mount bracket with the engine mount to the oil pan.
4. For FWD, install the engine mount bracket-to-oil pan bolts. Tighten: Tighten the engine mount bracket bolts to 58 N.m (43 lb ft).
5. Fro AWD, install the engine mount bracket-to-oil pan bolts. Hand tighten only.
6. For AWD, install the engine mount-to-engine bolt (2). Tighten: Tighten the bolts to 58 N.m (43 lb ft).
7. Use the utility stand in order to lower the engine.
8. Install the engine mount lower nuts. Tighten: Tighten the engine mount lower nuts to 47 N.m (35 lb ft).
9. Install the right engine splash shield. Refer to «Splash Shield Replacement - Engine»(/buick/rendezvous/i-2001-2007/remont/exterior-body-panels/#body-front-end) in Body Front End.
10. Install the right front wheel and tire. Refer to «Tire and Wheel Removal and Installation»(/buick/rendezvous/i-2001-2007/remont/wheel-tire-system/#tires-and-wheels) in Tires and Wheels.
11. Connect the three-way catalytic converter pipe to the engine right side exhaust manifold. Refer to «Catalytic Converter Replacement»(/buick/rendezvous/i-2001-2007/remont/exhaust/#engine-exhaust-system) in Engine Exhaust.
12. Lower the vehicle.
13. Install the engine mount struts. Refer to «Engine Mount Strut Replacement - Left»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) and «Engine Mount Strut Replacement - Right»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
14. Install the throttle body air inlet duct. Refer to «Air Cleaner Element Replacement»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-introduction-service-replacement) in Engine Controls - 3.4L.
15. Connect the battery ground (negative) cable. Refer to «Battery Negative Cable Disconnect/Connect Procedure (LA1)»(/buick/rendezvous/i-2001-2007/remont/charging-system/#battery-charging-system-and-starting-system) in Engine Electrical.

1. Remove the engine mount. Refer to «Engine Mount Replacement»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
2. Remove the engine mount upper nuts.
3. Remove the engine mount bracket from the engine mount.

1. Install the engine mount bracket to the engine mount.
2. Install the engine mount upper nuts. Tighten: Tighten the engine mount upper nuts to 53 N.m (39 lb ft).
3. Install the engine mount. Refer to «Engine Mount Replacement»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .

1. Remove the bolt and the nut from the engine mount strut at the left engine mount strut bracket on the engine.
2. Remove the bolt and the nut from the engine mount strut at the engine mount strut bracket on the upper radiator support.
3. Remove the engine mount strut.
4. Inspect the rubber in the engine mount strut for the following conditions: Hardness Splitting Cracking

1. Install the engine mount strut.
2. Install the bolt and the nut to the engine mount strut at the engine mount strut bracket on the upper radiator support. HAND TIGHTEN ONLY.
3. Install the bolt and the nut to the engine mount strut at the left engine mount strut bracket on the engine. Tighten: Tighten bolt engine mount strut nuts to 48 N.m (35 lb ft).

1. Remove the bolt and the nut from the engine mount strut at the right engine mount strut bracket on the engine.
2. Remove the bolt and the nut from the engine mount strut at the engine mount strut bracket on the upper radiator support.
3. Remove the engine mount strut.
4. Inspect the rubber in the engine mount strut for the following conditions: Hardness Splitting Cracking

1. Install the engine mount strut.
2. Install the bolt and the nut to the engine mount strut at the engine mount strut bracket on the upper radiator support. HAND TIGHTEN ONLY.
3. Install the bolt and the nut to the engine mount strut at the right engine mount strut bracket on the engine. Tighten: Tighten both engine mount strut nuts to 48 N.m (35 lb ft).

1. Remove the left engine mount strut from the left engine mount strut bracket. Refer to «Engine Mount Strut Replacement - Left»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
2. Remove the thermostat housing. Refer to «Thermostat Replacement (LA1)»(/buick/rendezvous/i-2001-2007/remont/cooling-fan/#engine-cooling-system) in Engine Cooling.
3. Remove the engine mount strut bracket bolts from the left engine mount strut bracket to the cylinder head.
4. Remove the left engine mount strut bracket.

1. Install the left engine mount strut bracket.
2. Install the engine mount strut bracket bolts through the engine mount strut bracket to the cylinder head. Tighten: Tighten the engine mount strut bracket bolts to 70 N.m (52 lb ft).
3. Install the thermostat housing. Refer to «Thermostat Replacement (LA1)»(/buick/rendezvous/i-2001-2007/remont/cooling-fan/#engine-cooling-system) in Engine Cooling.
4. Install the left engine mount strut to the left engine mount strut bracket. Refer to «Engine Mount Strut Replacement - Left»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .

1. Remove the right engine mount strut from the right engine mount strut bracket. Refer to «Engine Mount Strut Replacement - Right»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
2. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/buick/rendezvous/i-2001-2007/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) in General Information.
3. Remove the lower radiator baffle. Refer to «Radiator Air Baffle Assemblies and Deflectors»(/buick/rendezvous/i-2001-2007/remont/cooling-fan/#engine-cooling-system) in Engine Cooling.
4. Remove the air conditioning compressor mounting bolts. Refer to «Compressor Replacement»(/buick/rendezvous/i-2001-2007/remont/automatic-hvac-system/#heating-ventilation-and-air-conditioning) in Heating, Ventilation and Air Conditioning.
5. Remove and set the air conditioning compressor aside.
6. Remove the lower engine mount strut bracket bolt from the right engine mount strut bracket.
7. Lower the vehicle.
8. Remove the vertical engine mount strut bracket bolt from the right engine mount strut bracket.
9. Remove the right engine mount strut bracket.

1. Position the right engine mount strut bracket over the pin locator.
2. Install the vertical engine mount strut bracket bolt through the right engine mount strut bracket to the cylinder head. Tighten: Tighten the engine mount strut bracket bolt to 50 N.m (37 lb ft).
3. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/buick/rendezvous/i-2001-2007/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) in General Information.
4. Install the engine mount strut bracket lower bolt through the right engine mount strut bracket into the cylinder block. Tighten: Tighten the engine mount strut bracket bolt to 50 N.m (37 lb ft).
5. Install the air conditioning compressor. Refer to «Compressor Replacement»(/buick/rendezvous/i-2001-2007/remont/automatic-hvac-system/#heating-ventilation-and-air-conditioning) in Heating, Ventilation and Air Conditioning.
6. Install the lower radiator baffle. Refer to «Radiator Air Baffle Assemblies and Deflectors»(/buick/rendezvous/i-2001-2007/remont/cooling-fan/#engine-cooling-system) in Engine Cooling.
7. Lower the vehicle.
8. Install the right engine mount strut to the right engine mount strut bracket. Refer to «Engine Mount Strut Replacement - Right»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .

1. Remove the engine mount strut from the engine mount strut bracket at the upper radiator support. Refer to «Engine Mount Strut Replacement - Left»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) and/or «Engine Mount Strut Replacement - Right»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
2. Remove the engine mount strut bracket bolts from the upper radiator support.
3. Remove the engine mount strut bracket from the upper radiator support.

1. Position the engine mount strut bracket over the upper radiator support. Ensure that the engine mount strut bracket and the engine mount strut are aligned to the proper holes of the upper radiator support.
2. Install the engine mount strut bracket bolts to the upper radiator support. Tighten: Tighten the engine mount strut bracket bolts to 26 N.m (19 lb ft).
3. Install the engine mount strut to the engine mount strut bracket at the upper radiator support. Refer to «Engine Mount Strut Replacement - Left»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) and/or «Engine Mount Strut Replacement - Right»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .

1. Raise and suitably support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/buick/rendezvous/i-2001-2007/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) in General Information.
2. Remove the oil filter. Refer to «Engine Oil and Oil Filter Replacement»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
3. Remove oil filter bypass hole plug.
4. Insert a flat-bladed tool into the oil filter bypass hole and force the bypass valve (1 ) out.
5. Remove the oil filter bypass valve.
6. If necessary, remove the oil filter adapter.

1. If removed, install the oil filter adapter. Tighten: Tighten the oil filter adapter to 39 N.m (29 lb ft).
2. Install the oil filter bypass valve.
3. Install the oil filter bypass valve (1) to the proper depth.
4. Install oil filter bypass hole plug. Tighten: Tighten the oil filter bypass hole plug to 19 N.m (14 lb ft).
5. Install the oil filter. Refer to «Engine Oil and Oil Filter Replacement»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
6. Lower the vehicle.
7. Inspect and correct the engine oil level as necessary. Refer to «Fluid and Lubricant Recommendations»(/buick/rendezvous/i-2001-2007/remont/lubrication-system/#maintenance-and-lubrication__fluid-and-lubricant-recommendations) and «Explanation of Scheduled Services»(/buick/rendezvous/i-2001-2007/remont/lubrication-system/#maintenance-and-lubrication) in Maintenance and Lubrication.

1. Remove the oil level indicator.
2. Remove the oil level indicator tube bolt and tube. If you are unable to remove the oil level indicator tube, perform the following steps: Apply penetrating oil to the bottom of the oil level indicator tube. Move the oil level indicator tube back and forth in order to loosen the oil level indicator tube.

1. Clean the oil level indicator tube.
2. Apply GM sealant P/N 12345739 or equivalent around the oil level indicator tube 12.7 mm (0.50 in) below the bead.
3. Install the oil level indicator tube and bolt. Tighten: Tighten bolt to 25 N.m (18 lb ft.)
4. Install the oil level indicator.

1. Drain the engine coolant from the cooling system. Refer to «Draining and Filling Cooling System»(/buick/rendezvous/i-2001-2007/remont/cooling-fan/#engine-cooling-system) in Engine Cooling.
2. Remove the throttle body air inlet duct. Refer to «Air Cleaner Intake Duct Replacement»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-introduction-service-replacement) in Engine Controls - 3.4L.
3. Remove the accelerator control and cruise control cables with bracket from the throttle body. Refer to «Accelerator Controls Cable Replacement»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-introduction-service-replacement) in Engine Controls - 3.4L.
4. Disconnect the wiring harness connectors from the following throttle body components: Throttle Position (TP) sensor Idle Air Control (IAC) valve
5. Disconnect the engine left side spark plug wires. Refer to «Spark Plug Wire Replacement»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-introduction-service-replacement) in Engine Electrical.
6. Disconnect the engine left side spark plug wire harness attachment clip. Refer to «Spark Plug Wire Replacement»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-introduction-service-replacement) in Engine Electrical.
7. Disconnect the throttle body heater hoses. Refer to «Throttle Body Heater Hose Replacement - Inlet»(/buick/rendezvous/i-2001-2007/remont/cooling-fan/#engine-cooling-system) and «Throttle Body Heater Hose Replacement - Outlet»(/buick/rendezvous/i-2001-2007/remont/cooling-fan/#engine-cooling-system) in Engine Cooling.
8. Disconnect the vacuum hoses from the evaporative emission (EVAP) canister purge solenoid valve.
9. Remove the EVAP canister purge solenoid valve. Refer to «Evaporative Emission (EVAP) Canister Purge Solenoid Valve Replacement»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-introduction-service-replacement) in Engine Controls - 3.4L.
10. Remove the ignition coil bracket.
11. Disconnect the wiring harness from the manifold air pressure (MAP) sensor.
12. Disconnect the vacuum harness from the MAP sensor and the upper intake manifold.
13. Disconnect and remove the emission control vacuum harness.
14. Disconnect the vacuum brake booster hose from the upper intake manifold.
15. Disconnect the vacuum hose connections from the upper intake manifold: Heating, Ventilation and Air Conditioning (HVAC) vacuum source hose Fuel pressure regulator
16. Remove the exhaust gas recirculation (EGR) valve. Refer to «Exhaust Gas Recirculation (EGR) Valve Replacement»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-introduction-service-replacement) in Engine Controls - 3.4L.
17. Remove the MAP sensor and the bracket. Refer to «Manifold Absolute Pressure (MAP) Sensor Replacement»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-introduction-service-replacement) in Engine Controls - 3.4L.
18. Remove generator through bolt bracket.
19. Remove the upper intake manifold studs and bolts.
20. Remove the upper intake manifold.
21. If replacing the intake manifold, remove the throttle body. Refer to «Throttle Body Assembly Replacement»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-introduction-service-replacement) in Engine Controls - 3.4L.
22. Remove the upper intake manifold gasket.
23. Clean and inspect the upper intake manifold. Refer to «Intake Manifold Cleaning and Inspection - Upper»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1__intake-manifold-cleaning-and-inspection) in the Engine Unit Repair Manual.

1. If removed, install the throttle body. Refer to «Throttle Body Assembly Replacement»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-introduction-service-replacement) in Engine Controls - 3.4L.
2. Install the upper intake manifold gasket.
3. Install the upper intake manifold.
4. Install the MAP sensor and the bracket. Refer to «Manifold Absolute Pressure (MAP) Sensor Replacement»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-introduction-service-replacement) in Engine Controls - 3.4L.
5. Install the upper intake manifold studs and bolts. Tighten: Tighten bolts to 25 N.m (18 lb ft.)
6. Install generator through bolt bracket.
7. Install the EGR valve. Refer to «Exhaust Gas Recirculation (EGR) Valve Replacement»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-introduction-service-replacement) in Engine Controls - 3.4L.
8. Connect the vacuum hose connections to the upper intake manifold: Heater and air conditioning vacuum source hose Fuel pressure regulator
9. Connect the vacuum brake booster hose to the upper intake manifold.
10. Install and connect the emission control vacuum harness.
11. Connect the vacuum hose to the MAP sensor and the upper intake manifold.
12. Connect the wiring harness to the MAP sensor.
13. Install the ignition coil bracket with the coils.
14. Install the EVAP canister purge solenoid valve. Refer to «Evaporative Emission (EVAP) Canister Purge Solenoid Valve Replacement»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-introduction-service-replacement) in Engine Controls - 3.4L.
15. Connect the vacuum hoses to the EVAP canister purge solenoid valve.
16. Connect the throttle body heater hoses. Refer to «Throttle Body Heater Hose Replacement - Inlet»(/buick/rendezvous/i-2001-2007/remont/cooling-fan/#engine-cooling-system) and «Throttle Body Heater Hose Replacement - Outlet»(/buick/rendezvous/i-2001-2007/remont/cooling-fan/#engine-cooling-system) in Engine Cooling.
17. Connect the engine left side spark plug wire harness attachment clip. Refer to «Spark Plug Wire Replacement»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-introduction-service-replacement) in Engine Electrical.
18. Connect the engine left side spark plug wires. Refer to «Spark Plug Wire Replacement»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-introduction-service-replacement) in Engine Electrical.
19. Connect the wiring harness connectors to the throttle body. Refer to «Throttle Body Assembly Replacement»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-introduction-service-replacement) in Engine Controls - 3.4L.
20. Install the accelerator control and cruise control cables with bracket to the throttle body. Refer to «Accelerator Controls Cable Replacement»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-introduction-service-replacement) in Engine Controls - 3.4L.
21. Install the throttle body air inlet duct. Refer to «Air Cleaner Intake Duct Replacement»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-introduction-service-replacement) in Engine Controls - 3.4L.
22. Fill the cooling system with engine coolant. Refer to «Draining and Filling Cooling System»(/buick/rendezvous/i-2001-2007/remont/cooling-fan/#engine-cooling-system) in Engine Cooling.

1. Remove the upper intake manifold. Refer to «Intake Manifold Replacement - Upper»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
2. Remove the engine left side valve rocker arm cover. Refer to «Valve Rocker Arm Cover Replacement - Left»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
3. Remove the engine right side valve rocker arm cover. Refer to «Valve Rocker Arm Cover Replacement - Right»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
4. Disconnect the wiring harness from the engine coolant temperature (ECT) sensor.
5. Disconnect and remove the fuel injector, manifold air pressure (MAP) and ECT wiring harness.
6. Remove the fuel feed and return pipe from the fuel injector rail. Refer to «Fuel Hose/Pipes Replacement - Engine Compartment»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-introduction-service-replacement) in Engine Controls-3.4L.
7. Remove the fuel feed and return pipe retaining clip bolt.
8. Remove the fuel feed and return pipe retaining clip.
9. Remove the fuel injector rail bolts.
10. Remove the fuel injector rail with the fuel injectors.
11. Remove the power steering pump from the front engine cover and reposition. Refer to «Power Steering Pump Replacement (LA1 )»(/buick/rendezvous/i-2001-2007/remont/manual-power-steering/#power-steering-system) in Power Steering System.
12. Disconnect the heater inlet pipe with heater hose from the lower intake manifold and reposition. Refer to «Heater Pipe Replacement - Inlet»(/buick/rendezvous/i-2001-2007/remont/automatic-hvac-system/#heating-ventilation-and-air-conditioning) in Heating, Ventilation and Air Conditioning.
13. Disconnect the inlet radiator hose from the engine. Refer to «Radiator Hose Replacement - Inlet (LA1)»(/buick/rendezvous/i-2001-2007/remont/cooling-fan/#engine-cooling-system) in Engine Cooling.
14. Disconnect the thermostat bypass hose from the lower intake manifold pipe.
15. Remove the lower intake manifold bolts.
16. Remove the lower intake manifold.
17. Loosen the valve rocker arms and remove the push rods. Refer to «Valve Rocker Arm and Push Rod Removal»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1__valve-rocker-arm-and-push-rod) .
18. Remove the lower intake manifold gaskets and seals.
19. Clean the lower intake manifold gasket and seal surfaces on the cylinder heads and the engine block.
20. Clean and inspect the lower intake manifold. Refer to «Intake Manifold Cleaning and Inspection - Lower»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
21. If you are replacing the lower intake manifold, perform the following steps: Remove the ECT sensor. Refer to «Engine Coolant Temperature (ECT) Sensor Replacement»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-introduction-service-replacement) in Engine Controls-3.4L. Remove the thermostat. Refer to «Thermostat Replacement (LA1)»(/buick/rendezvous/i-2001-2007/remont/cooling-fan/#engine-cooling-system) in Engine Cooling.

1. If you are replacing the lower intake manifold, perform the following steps. Install the ECT sensor. Refer to «Engine Coolant Temperature (ECT) Sensor Replacement»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-introduction-service-replacement) in Engine Controls - 3.4L. Install the thermostat. Refer to «Thermostat Replacement (LA1)»(/buick/rendezvous/i-2001-2007/remont/cooling-fan/#engine-cooling-system) in Engine Cooling.
2. Install the lower intake manifold gaskets.
3. Install the push rods and tighten the valve rocker arms. Refer to «Valve Rocker Arm and Push Rod Installation»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1__valve-rocker-arm-and-push-rod) .
4. With the gaskets in place apply a small drop 8-10 mm (0.31-0.39 in) of RTV sealer GM P/N 12346286 (Canadian P/N 10953472) or equivalent to the 4 corners of the intake manifold to block joint (1).
5. Connect the 2 small drops with a bead of RTV sealer that is between 8-10 mm (0.31-0.39 in) wide and 3.0-5.0 mm (0.12-0.20 in) thick (2).
6. Install the lower intake manifold.
7. Apply sealer GM P/N 12345382, (Canadian P/N 10953489) or the equivalent to the lower intake manifold bolt threads.
8. Install the lower intake manifold bolts. Tighten: Tighten the lower intake manifold bolts in sequence to 7 N.m (62 lb in) on the first pass. Tighten the lower intake manifold bolts (1, 2, 3, 4) in sequence to 13 N.m (115 lb in) on the final pass. Tighten the lower intake manifold bolts (5, 6, 7, 8) in sequence to 25 N.m (18 lb ft) on the final pass.
9. Connect the thermostat bypass hose to the lower intake manifold pipe.
10. Connect the inlet radiator hose to the engine. Refer to «Radiator Hose Replacement - Inlet (LA1)»(/buick/rendezvous/i-2001-2007/remont/cooling-fan/#engine-cooling-system) in Engine Cooling.
11. Connect the heater inlet pipe to the lower intake manifold. Refer to «Heater Pipe Replacement - Inlet»(/buick/rendezvous/i-2001-2007/remont/automatic-hvac-system/#heating-ventilation-and-air-conditioning) in Heating, Ventilation and Air Conditioning.
12. Install the power steering pump to the front engine cover. Refer to «Power Steering Pump Replacement (LA1 )»(/buick/rendezvous/i-2001-2007/remont/manual-power-steering/#power-steering-system) in Power Steering System.
13. Install the fuel injector rail. Refer to «Fuel Rail Assembly Replacement»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-introduction-service-replacement) in Engine Controls - 3.4L.
14. Connect the fuel feed and return pipe to the fuel injector rail. Refer to «Fuel Hose/Pipes Replacement - Engine Compartment»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-introduction-service-replacement) in Engine Controls-3.4L.
15. Install the fuel feed and return pipe retaining clip.
16. Install the fuel feed and return pipe retaining clip bolt. Tighten: Tighten the fuel feed and return pipe retaining clip bolt to 8 N.m (71 lb in).
17. Install and connect the fuel injector, MAP and ECT wiring harness.
18. Install the wiring harness to the ECT sensor.
19. Install the engine right side valve rocker arm cover. Refer to «Valve Rocker Arm Cover Replacement - Left»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
20. Install the engine left side valve rocker arm cover. Refer to «Valve Rocker Arm Cover Replacement - Left»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
21. Install the upper intake manifold. Refer to «Intake Manifold Replacement - Upper»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .

1. Disconnect the vacuum hose from positive crankcase ventilation valve (2).
2. Remove the positive crankcase ventilation valve.

1. Install the positive crankcase ventilation valve (2).
2. Connect the vacuum hose to positive crankcase ventilation valve.

1. Remove the right engine strut mount. Refer to «Engine Mount Strut Replacement - Right»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
2. Remove the thermostat bypass pipe. Refer to «Thermostat Bypass Pipes Replacement»(/buick/rendezvous/i-2001-2007/remont/cooling-fan/#engine-cooling-system) in Engine Cooling.
3. Remove the PCV valve from valve rocker arm cover.
4. Remove the valve rocker arm cover bolts.
5. Remove the valve rocker arm cover. Bump the end of the valve rocker arm cover with the palm of your hand or a soft rubber mallet if the cover adheres to the cylinder head.
6. Trim valve cover gasket and sealant away from lower intake manifold gasket at the cylinder head to lower intake manifold joints (1).
7. Remove the valve cover gasket.
8. Clean the sealing surface on the cylinder head with degreaser.
9. Clean the valve rocker arm cover. Refer to «Valve Rocker Arm Cover Cleaning and Inspection»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1__valve-rocker-arm-cover-cleaning-and) .

1. Apply sealant at the cylinder head to lower intake manifold joints (1).
2. Install the valve rocker arm cover gasket into valve rocker arm cover. Ensure that the gasket is properly seated in the groove of the valve rocker arm cover.
3. Install the valve rocker arm cover. Tighten: Tighten bolts to 10 N.m (89 lb in).
4. Install the PCV valve to valve rocker arm cover.
5. Install the thermostat bypass pipe. Refer to «Thermostat Bypass Pipes Replacement»(/buick/rendezvous/i-2001-2007/remont/cooling-fan/#engine-cooling-system) in Engine Cooling.
6. Install the right engine mount strut. Refer to «Engine Mount Strut Replacement - Right»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .

1. Remove the drive belt. Refer to «Drive Belt Replacement»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
2. Remove the generator. Refer to «Generator Replacement (LA1)»(/buick/rendezvous/i-2001-2007/remont/charging-system/#battery-charging-system-and-starting-system) in Engine Electrical.
3. Remove the generator bracket. Refer to «Generator Bracket Replacement»(/buick/rendezvous/i-2001-2007/remont/charging-system/#battery-charging-system-and-starting-system) in Engine Electrical.
4. Disconnect the engine right side spark plug wires. Refer to «Spark Plug Wire Replacement»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-introduction-service-replacement) in Engine Controls - 3.4 L.
5. Disconnect the vacuum hoses from the evaporative emissions (EVAP) canister purge solenoid valve.
6. Remove the EVAP canister purge solenoid valve. Refer to «Evaporative Emission (EVAP) Canister Purge Solenoid Valve Replacement»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-introduction-service-replacement) in Engine Controls - 3.4L.
7. Remove the ignition module bracket with the coils.
8. Remove the vacuum hose from the grommet in the engine right side valve rocker arm cover.
9. Remove the valve rocker arm cover bolts.
10. Remove the valve rocker. Bump the end of the valve rocker arm cover with the palm of your hand or a soft rubber mallet if the cover adheres to the cylinder head.
11. Trim the valve cover gasket and sealant away from lower intake manifold gasket at the cylinder head to lower intake manifold joints (1).
12. Remove the valve cover gasket.
13. Clean the sealing surface on the cylinder head with degreaser.
14. Clean the valve rocker arm cover. Refer to «Valve Rocker Arm Cover Cleaning and Inspection»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1__valve-rocker-arm-cover-cleaning-and) in the Engine Unit Repair Manual.

1. Apply sealant at the cylinder head to lower intake manifold joint (1).
2. Install the valve rocker arm cover gasket into the valve rocker arm cover. Ensure that the gasket is properly seated in the groove of the valve rocker arm cover.
3. Install valve rocker arm cover.
4. Install the valve rocker arm cover bolts. Tighten: Tighten the bolts to 10 N.m (89 lb in).
5. Install the vacuum hose to the grommet in the engine right side valve rocker arm cover.
6. Install the ignition module bracket with the coils.
7. Install the EVAP canister purge solenoid valve. Refer to «Evaporative Emission (EVAP) Canister Purge Solenoid Valve Replacement»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-introduction-service-replacement) in Engine Controls - 3.4L.
8. Connect the vacuum hoses from the EVAP canister purge solenoid valve.
9. Connect the engine right side spark plug wires. Refer to «Spark Plug Wire Replacement»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-introduction-service-replacement) in Engine Controls - 3.4L.
10. Install the generator bracket. Refer to «Generator Bracket Replacement»(/buick/rendezvous/i-2001-2007/remont/charging-system/#battery-charging-system-and-starting-system) in Engine Electrical.
11. Install the generator. Refer to «Generator Replacement (LA1)»(/buick/rendezvous/i-2001-2007/remont/charging-system/#battery-charging-system-and-starting-system) in Engine Electrical.
12. Install the drive belt. Refer to «Drive Belt Replacement»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .

1. Remove the valve rocker arm cover(s). Refer to «Valve Rocker Arm Cover Replacement - Left»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) or «Valve Rocker Arm Cover Replacement - Right»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
2. Remove the valve rocker arm bolt(s).
3. Remove the valve rocker arm(s).
4. Remove the pushrod(s).
5. Clean and inspect the valve train components. Refer to «Valve Rocker Arm and Push Rods Cleaning and Inspection»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1__valve-rocker-arm-and-push-rods) in the Engine Unit Repair Manual.

1. Install the pushrod(s) and the valve rocker arm(s). Refer to «Valve Rocker Arm and Push Rod Installation»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1__valve-rocker-arm-and-push-rod) in the Engine Unit Repair Manual.
2. Install the valve rocker arm cover(s). Refer to «Valve Rocker Arm Cover Replacement - Left»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .

Valve Stem Oil Seal and Valve Spring Replacement

Tools Required

1. J 22794 Spark Plug Port Adapter. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
2. J 38606 Valve Spring Compressor

1. Remove the spark plug. Refer to «Spark Plug Replacement»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-introduction-service-replacement) in Engine Controls - 3.4 L.
2. Install the J 22794 into the spark plug port. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) . Apply compressed air in order to hold the valves in place.
3. Remove the rocker arm. Refer to «Valve Rocker Arm and Push Rod Replacement»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
4. Compress the valve spring with the J 38606 .
5. Remove the valve keys.
6. Remove the valve cap.
7. Remove the valve spring.
8. Inspect the valve spring for damage. Replace the spring if it is damaged. Refer to «Cylinder Head Cleaning and Inspection»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1__cylinder-head-cleaning-and-inspection) in the Engine Unit Repair Manual.
9. Remove the spring seat/valve stem oil seal.

1. Install the valve stem oil seal/spring seat. Use a suitable driver. Press over the valve guide boss.
2. Install the valve spring.
3. Install the valve cap.
4. Use the J 38606 in order to compress the valve spring. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
5. Install the valve keys. If necessary, hold the valve keys in place with grease.
6. Remove the J 38606 in order to release the valve spring. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
7. Ensure that the valve keys are seated.
8. Install the valve rocker arm. Refer to «Valve Rocker Arm and Push Rod Replacement»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
9. Release the air pressure and remove the J 22794 . See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
10. Install the spark plug. Refer to «Spark Plug Replacement»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-introduction-service-replacement) in Engine Controls - 3.4 L.

1. Remove the engine left side valve rocker arm cover. Refer to «Valve Rocker Arm Cover Replacement - Left»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
2. Remove the engine right side valve rocker arm cover. Refer to «Valve Rocker Arm Cover Replacement - Right»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
3. Remove the upper intake manifold. Refer to «Intake Manifold Replacement - Lower»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
4. Remove the lower intake manifold. Refer to «Intake Manifold Replacement - Upper»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
5. Remove the valve rocker arms and pushrods. Refer to «Valve Rocker Arm and Push Rod Replacement»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
6. Remove the lifter guide bolts.
7. Remove the lifter guide.
8. Remove the lifter(s).
9. Clean and inspect the valve lifter(s). Refer to «Valve Lifters Cleaning and Inspection»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1__valve-lifters-cleaning-and-inspection) in the Engine Unit Repair Manual.

1. Install the lifters and the lifter guide. Refer to «Valve Lifter Installation»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1__valve-lifter-installation) in the Engine Unit Repair Manual.
2. Install the valve rocker arms and pushrods. Refer to «Valve Rocker Arm and Push Rod Replacement»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
3. Install the lower intake manifold. Refer to «Intake Manifold Replacement - Lower»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1)
4. Install the upper intake manifold. Refer to «Intake Manifold Replacement - Upper»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
5. Install the engine right side valve rocker arm cover. Refer to «Valve Rocker Arm Cover Replacement - Left»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
6. Install the engine left side valve rocker arm cover. Refer to «Valve Rocker Arm Cover Replacement - Left»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .

Crankshaft Balancer Replacement

Tools Required

1. J 24420-C Crankshaft Balancer Puller. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
2. J 29113 Crankshaft Balancer Installer. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .

1. Remove the drive belt. Refer to «Drive Belt Replacement»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
2. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/buick/rendezvous/i-2001-2007/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) in General Information.
3. Remove the right front tire and wheel. Refer to «Tire and Wheel Removal and Installation»(/buick/rendezvous/i-2001-2007/remont/wheel-tire-system/#tires-and-wheels) in Tires and Wheels.
4. Remove the right engine splash shield. Refer to «Splash Shield Replacement - Engine»(/buick/rendezvous/i-2001-2007/remont/exterior-body-panels/#body-front-end) in Body Front End.
5. Install a utility stand beneath the frame right side rail in order to support the frame/powertrain.
6. Remove the two frame right side bolts.
7. Use the utility stand to lower the frame enough to provide access to the crankshaft balancer.
8. Remove and DISCARD the crankshaft balancer bolt.
9. Remove the crankshaft balancer using the J 24420-C . See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
10. Clean and inspect the crankshaft balancer. Refer to «Crankshaft Balancer Cleaning and Inspection»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1__crankshaft-balancer-cleaning-and-inspection) .

1. Apply sealer GM P/N 12345739 or the equivalent to the keyway of the crankshaft balancer.
2. Install the crankshaft balancer into position over the key in the crankshaft.
3. Use the J 29113 in order to install the crankshaft balancer to the crankshaft. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
4. Remove the J 29113 from the crankshaft balancer. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
5. Install the crankshaft balancer washer and the NEW crankshaft balancer bolt. Tighten: Tighten the bolt to 70 N.m (52 lb ft). Use a torque angle meter in order to rotate the bolt 72 degrees.
6. Use the utility stand in order to raise the frame/powertrain.
7. Install the frame right side bolts. Refer to «Frame Replacement - Front (W/AWD)»(/buick/rendezvous/i-2001-2007/remont/frames-subframes-crossmembers/#frame-and-underbody) or «Frame Replacement - Front (W/FWD)»(/buick/rendezvous/i-2001-2007/remont/frames-subframes-crossmembers/#frame-and-underbody) in Frame and Underbody.
8. Install the engine splash shield. Refer to «Splash Shield Replacement - Engine»(/buick/rendezvous/i-2001-2007/remont/exterior-body-panels/#body-front-end) in Body Front End.
9. Install the right front tire and wheel. Refer to «Tire and Wheel Removal and Installation»(/buick/rendezvous/i-2001-2007/remont/wheel-tire-system/#tires-and-wheels) in Tires and Wheels.
10. Lower the vehicle.
11. Install the drive belt. Refer to «Drive Belt Replacement»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .

Oil Pan Replacement

Tools Required

1. J 39505 Torque Wrench Adapter. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
2. J 45057-2 Lower Support Bar. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .

1. Disconnect the battery negative cable. Refer to «Battery Negative Cable Disconnect/Connect Procedure (LA1)»(/buick/rendezvous/i-2001-2007/remont/charging-system/#battery-charging-system-and-starting-system) in Engine Electrical.
2. Remove the right engine mount strut from the engine. Refer to «Engine Mount Strut Replacement - Right»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
3. Install the engine support fixture. Refer to «Engine Support Fixture»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1__engine-support-fixture) .
4. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/buick/rendezvous/i-2001-2007/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) in General Information.
5. Remove the A/C compressor bolts and reposition the compressor in order to gain access to the oil pan. Refer to «Compressor Replacement»(/buick/rendezvous/i-2001-2007/remont/automatic-hvac-system/#heating-ventilation-and-air-conditioning) in HVAC Systems - Manual.
6. Disconnect the catalytic converter from the exhaust manifold. Refer to «Catalytic Converter Replacement»(/buick/rendezvous/i-2001-2007/remont/exhaust/#engine-exhaust-system) in Engine Exhaust.
7. Remove the frame. Refer to «Frame Replacement - Front (W/AWD)»(/buick/rendezvous/i-2001-2007/remont/frames-subframes-crossmembers/#frame-and-underbody) or «Frame Replacement - Front (W/FWD)»(/buick/rendezvous/i-2001-2007/remont/frames-subframes-crossmembers/#frame-and-underbody) in Frame and Underbody.
8. Drain the engine oil. Refer to «Engine Oil and Oil Filter Replacement»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
9. Disconnect the oil level sensor electrical connector.
10. Remove the starter motor. Refer to «Starter Motor Replacement (LA1)»(/buick/rendezvous/i-2001-2007/remont/charging-system/#battery-charging-system-and-starting-system) in Engine Electrical.
11. If the vehicle is equipped with All-Wheel-Drive (AWD), remove the transfer case brace. Refer to «Support Brace Replacement (LA1)»(/buick/rendezvous/i-2001-2007/remont/transfer-case/#transfer-case-steyr) in Transfer Case - Steyr.
12. Remove the transaxle brace. Refer to «Automatic Transmission Brace Replacement (LA1)»(/buick/rendezvous/i-2001-2007/remont/automatic-trans/#automatic-transaxle-4t65-e-introduction-service-replacement) in Automatic Transaxle - 4T65-E.
13. Install one end of a suitable utility strap to the transmission. If the vehicle is equipped with All-Wheel-Drive (AWD), carefully wrap the utility strap around the transfer case. If the vehicle is equipped with Front-Wheel-Drive (FWD), carefully wrap the utility strap around the transmission case extension housing.
14. Install the opposite end of the utility strap to a suitable underbody structure.
15. Tighten the utility strap in order to prevent movement of the powertrain.
16. Remove the J 45057-2 lower support bar. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
17. Remove the engine mount with the engine mount bracket from the oil pan. Refer to «Engine Mount Bracket Replacement»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
18. Remove the oil pan and the oil pan gasket. Refer to «Oil Pan Removal»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1__oil-pan-removal) .
19. Clean the oil pan and the engine block gasket surface. Refer to «Oil Pan Cleaning and Inspection»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1__oil-pan-cleaning-and-inspection) .

1. Install the oil pan gasket and the oil pan. Refer to «Oil Pan Installation»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1__oil-pan-installation) .
2. Install the transaxle brace. Refer to «Automatic Transmission Brace Replacement (LA1)»(/buick/rendezvous/i-2001-2007/remont/automatic-trans/#automatic-transaxle-4t65-e-introduction-service-replacement) in Automatic Transaxle - 4T65-E.
3. Install the engine mount with the engine mount bracket to the oil pan. Refer to «Engine Mount Bracket Replacement»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
4. Install the J 45057-2 lower support bar. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
5. Remove the utility strap.
6. If the vehicle is equipped with All-Wheel-Drive (AWD), install the transfer case brace. Refer to «Support Brace Replacement (LA1)»(/buick/rendezvous/i-2001-2007/remont/transfer-case/#transfer-case-steyr) in Transfer Case - Steyr.
7. Install the starter motor. Refer to «Starter Motor Replacement (LA1)»(/buick/rendezvous/i-2001-2007/remont/charging-system/#battery-charging-system-and-starting-system) in Engine Electrical.
8. Connect the oil level sensor electrical connector.
9. Install the frame. Refer to «Frame Replacement - Front (W/AWD)»(/buick/rendezvous/i-2001-2007/remont/frames-subframes-crossmembers/#frame-and-underbody) or «Frame Replacement - Front (W/FWD)»(/buick/rendezvous/i-2001-2007/remont/frames-subframes-crossmembers/#frame-and-underbody) in Frame and Underbody.
10. Connect the catalytic converter to the exhaust manifold. Refer to «Catalytic Converter Replacement»(/buick/rendezvous/i-2001-2007/remont/exhaust/#engine-exhaust-system) in Engine Exhaust.
11. Install the A/C compressor. Refer to «Compressor Replacement»(/buick/rendezvous/i-2001-2007/remont/automatic-hvac-system/#heating-ventilation-and-air-conditioning) in HVAC Systems - Manual.
12. Lower the vehicle.
13. Remove the engine support fixture. Refer to «Engine Support Fixture»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1__engine-support-fixture) .
14. Install the right engine mount strut to the engine. Refer to «Engine Mount Strut Replacement - Right»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
15. Fill the engine with oil. Refer to «Engine Oil and Oil Filter Replacement»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
16. Connect the battery negative cable. Refer to «Battery Negative Cable Disconnect/Connect Procedure (LA1)»(/buick/rendezvous/i-2001-2007/remont/charging-system/#battery-charging-system-and-starting-system) in Engine Electrical.

1. Remove the battery negative cable from the battery. Refer to «Battery Negative Cable Disconnect/Connect Procedure (LA1)»(/buick/rendezvous/i-2001-2007/remont/charging-system/#battery-charging-system-and-starting-system) in Engine Electrical.
2. Raise and suitably support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/buick/rendezvous/i-2001-2007/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) in General Information.
3. Remove the electrical connector from the engine oil pressure sensor.
4. Remove the engine oil pressure switch.

1. Install the engine oil pressure switch. Tighten: Tighten the switch to 16 N.m (12 lb ft).
2. Install the electrical connector to the engine oil pressure switch.
3. Lower the vehicle.
4. Install the battery negative cable to the battery. Refer to «Battery Negative Cable Disconnect/Connect Procedure (LA1)»(/buick/rendezvous/i-2001-2007/remont/charging-system/#battery-charging-system-and-starting-system) in Engine Electrical.

1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/buick/rendezvous/i-2001-2007/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) in General Information.
2. Drain the oil from the oil pan.
3. Disconnect the electrical connector from the oil level sensor.
4. Remove the oil level sensor bolt.
5. Remove the oil level sensor from the oil pan.

1. Install the oil level sensor to the oil pan.
2. Install the oil level sensor bolt. Tighten: Tighten the bolt to 10 N.m (7 lb ft).
3. Connect the electrical connector to the oil level sensor.
4. Lower the vehicle.
5. Ensure that the engine oil is filled to the proper level.

1. Remove the oil pan. Refer to «Oil Pan Replacement»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1__oil-pan-replacement) .
2. Remove the crankshaft oil deflector nuts.
3. Remove the crankshaft oil deflector.

1. Install the crankshaft oil deflector.
2. Install the crankshaft oil deflector nuts. Tighten: Tighten the crankshaft oil deflector nuts to 25 N.m (18 lb ft).
3. Install the oil pan. Refer to «Oil Pan Replacement»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1__oil-pan-replacement) .

1. Remove the oil pan. Refer to «Oil Pan Replacement»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1__oil-pan-replacement) .
2. Remove the oil pump bolt.
3. Remove the oil pump and oil pump drive shaft.
4. Remove the crankshaft oil deflector nuts.
5. Remove the crankshaft oil deflector.
6. Inspect the oil pump driveshaft at both ends for rounding of the corners.
7. Inspect the oil pump. Refer to «Oil Pump Disassemble»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1__oil-pump-disassemble) , «Oil Pump Cleaning and Inspection»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1__oil-pump-cleaning-and-inspection) , and «Oil Pump Assemble»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1__oil-pump-assemble) in Engine Unit Repair Manual.

1. Install the crankshaft oil deflector.
2. Install the crankshaft oil deflector nuts. Tighten: Tighten the nuts to 25 N.m (18 lb ft).
3. Install the oil pump and oil pump drive shaft.
4. Install the oil pump bolt. Tighten: Tighten the oil pump bolt to 41 N.m (30 lb ft).
5. Install the oil pan. Refer to «Oil Pan Replacement»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1__oil-pan-replacement) .

1. Remove the upper intake manifold. Refer to «Intake Manifold Replacement - Upper»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
2. Disconnect the fuel feed and return pipe from the fuel injector rail. Refer to «Fuel Hose/Pipes Replacement - Engine Compartment»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-introduction-service-replacement) in Engine Controls - 3.4L.
3. Remove the oil pump drive clamp bolt.
4. Remove the oil pump drive clamp.
5. Remove the oil pump drive.

1. Apply prelube GM P/N 1052365 or the equivalent to the oil pump drive gear.
2. Apply engine oil to the oil pump drive gear assembly for ease of assembly.
3. Install the oil pump drive gear assembly.
4. Install the oil pump drive gear clamp.
5. Install the oil pump drive gear clamp bolt. Tighten: Tighten the oil pump drive gear clamp bolt to 36 N.m (27 lb ft).
6. Connect the fuel feed and return pipe to the fuel injector rail. Refer to «Fuel Hose/Pipes Replacement - Engine Compartment»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-introduction-service-replacement) in Engine Controls - 3.4L.
7. Install the upper intake manifold. Refer to «Intake Manifold Replacement - Upper»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .

J 35468 Crankshaft Front Oil Seal Installer. See Special Tools and Equipment .

1. Remove the crankshaft balancer. Refer to «Crankshaft Balancer Replacement»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1__crankshaft-balancer-replacement) .
2. Pry out the crankshaft front oil seal using a suitable tool. Use care not to damage the engine front cover or the crankshaft.
3. Inspect the crankshaft, the crankshaft balancer and the engine front cover for wear and/or damage. Replace the components as necessary. Refer to the following procedures: «Crankshaft Balancer Cleaning and Inspection»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1__crankshaft-balancer-cleaning-and-inspection) «Engine Front Cover Cleaning and Inspection»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1__engine-front-cover-cleaning-and-inspection)

1. Align the J 35468 and the crankshaft front oil seal with the engine front cover and crankshaft. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
2. Install the crankshaft front oil seal using the J 35468 and a suitable tool. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
3. Install the crankshaft balancer. Refer to «Crankshaft Balancer Replacement»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1__crankshaft-balancer-replacement) .

1. Drain the engine cooling system. Refer to «Draining and Filling Cooling System»(/buick/rendezvous/i-2001-2007/remont/cooling-fan/#engine-cooling-system) in Engine Cooling.
2. Drain the engine oil. Refer to «Engine Oil and Oil Filter Replacement»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
3. Remove the crankshaft balancer. Refer to «Crankshaft Balancer Replacement»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1__crankshaft-balancer-replacement) .
4. Remove the drive belt tensioner. Refer to «Drive Belt Tensioner Replacement»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
5. Remove the power steering pump with lines. Move the power steering pump aside. Refer to «Power Steering Pump Replacement (LA1 )»(/buick/rendezvous/i-2001-2007/remont/manual-power-steering/#power-steering-system) in Power Steering System.
6. Disconnect the thermostat bypass pipe from the engine front cover. Refer to «Thermostat Bypass Pipes Replacement»(/buick/rendezvous/i-2001-2007/remont/cooling-fan/#engine-cooling-system) in Engine Cooling.
7. Disconnect the radiator outlet hose from the front cover. Refer to «Radiator Hose Replacement - Outlet (LA1)»(/buick/rendezvous/i-2001-2007/remont/cooling-fan/#engine-cooling-system) in Engine Cooling.
8. Remove the coolant pump pulley. Refer to «Water Pump Replacement (LA1)»(/buick/rendezvous/i-2001-2007/remont/cooling-fan/#engine-cooling-system) in Engine Cooling.
9. Remove the crankshaft position sensor wiring harness bracket from the engine front cover.
10. Remove oil pan. Refer to «Oil Pan Replacement»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1__oil-pan-replacement) .
11. Remove the engine front cover bolts (1,2,3).
12. Remove the engine front cover.
13. Remove the engine front cover gasket.
14. Clean the engine front cover and engine block gasket sealing surfaces. Refer to «Engine Front Cover Cleaning and Inspection»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1__engine-front-cover-cleaning-and-inspection) in the Engine Unit Repair Manual.
15. Inspect the engine front cover for damage to the engine front cover, crankshaft front oil seal or the gasket sealing surface. Refer to «Engine Front Cover Cleaning and Inspection»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1__engine-front-cover-cleaning-and-inspection) in the Engine Unit Repair Manual.
16. If you are replacing the engine front cover, remove the drive belt shield.
17. If you are replacing the engine front cover, remove the crankshaft position sensor from the engine front cover. Refer to «Crankshaft Position (CKP) Sensor Replacement (24X CKP Sensor)»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-introduction-service-replacement) or «Crankshaft Position (CKP) Sensor Replacement (7X CKP Sensor)»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-introduction-service-replacement) in Engine Controls-3.4L.
18. If you are replacing the engine front cover, remove the coolant pump from the engine front cover. Refer to «Water Pump Replacement (LA1)»(/buick/rendezvous/i-2001-2007/remont/cooling-fan/#engine-cooling-system) in Engine Cooling.

1. If removed, install the coolant pump to the engine front cover. Refer to «Water Pump Replacement (LA1)»(/buick/rendezvous/i-2001-2007/remont/cooling-fan/#engine-cooling-system) in Engine Cooling.
2. If removed, install the crankshaft position sensor to the engine front cover. Refer to «Crankshaft Position (CKP) Sensor Replacement (24X CKP Sensor)»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-introduction-service-replacement) or «Crankshaft Position (CKP) Sensor Replacement (7X CKP Sensor)»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-introduction-service-replacement) in Engine Controls-3.4L.
3. If removed, install the drive belt shield.
4. Install the drive belt shield bolt. Tighten: Tighten the drive belt shield bolt to 10 N.m (89 lb in).
5. Install the engine front cover gasket.
6. Apply sealer GM P/N 12346004, (Canadian P/N 10953480) or equivalent to both sides of the lower tabs of the engine front cover gasket, and the engine front cover bolts.
7. Install the engine front cover.
8. Install the engine front cover bolts (2). Tighten: Tighten the engine front cover bolts (2) to 55 N.m (41 lb ft).
9. Install the engine front cover bolts (3). Tighten: Tighten the engine front cover bolts (3) to 55 N.m (41 lb ft).
10. Install the engine front cover bolts (1). Tighten: Tighten the engine front cover bolts (1) to 27 N.m (20 lb ft).
11. Install the crankshaft position sensor wiring bracket.
12. Install the crankshaft position sensor wiring bracket bolt. Tighten: Tighten the crankshaft position sensor wiring bracket bolt to 27 N.m (20 lb ft).
13. Install the coolant pump pulley. Refer to «Water Pump Replacement (LA1)»(/buick/rendezvous/i-2001-2007/remont/cooling-fan/#engine-cooling-system) in Engine Cooling.
14. Connect the radiator outlet hose to the coolant pump. Refer to «Radiator Hose Replacement - Outlet (LA1)»(/buick/rendezvous/i-2001-2007/remont/cooling-fan/#engine-cooling-system) in Engine Cooling.
15. Connect the thermostat bypass pipe to the engine front cover. Refer to «Thermostat Bypass Pipes Replacement»(/buick/rendezvous/i-2001-2007/remont/cooling-fan/#engine-cooling-system) in Engine Cooling.
16. Install the power steering pump with lines. Refer to «Power Steering Pump Replacement (LA1 )»(/buick/rendezvous/i-2001-2007/remont/manual-power-steering/#power-steering-system) in Power Steering System.
17. Install the drive belt tensioner. Refer to «Drive Belt Tensioner Replacement»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
18. Install the crankshaft balancer. Refer to «Crankshaft Balancer Replacement»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1__crankshaft-balancer-replacement) .
19. Fill the engine with new engine oil. Refer to «Engine Oil and Oil Filter Replacement»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
20. Fill the cooling system with engine coolant. Refer to «Draining and Filling Cooling System»(/buick/rendezvous/i-2001-2007/remont/cooling-fan/#engine-cooling-system) in Engine Cooling.

1. Remove the engine front cover. Refer to «Engine Front Cover Replacement»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
2. Align the crankshaft timing mark (2) to the timing mark on the bottom of the timing chain dampener (1).
3. Align the timing mark on the camshaft gear (4) with the timing mark on top of the timing chain dampener (3).
4. Remove the camshaft sprocket bolt.
5. Remove the camshaft sprocket and timing chain.
6. Remove the crankshaft sprocket.
7. Remove the timing chain dampener bolts.
8. Remove the timing chain dampener.
9. Clean and inspect the timing chain and gears. Refer to «Timing Chain and Sprockets Cleaning and Inspection»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1__timing-chain-and-sprockets-cleaning-and) in the Engine Unit Repair Manual.

1. Install the crankshaft sprocket.
2. Apply prelube GM P/N 1052365 or the equivalent to the crankshaft sprocket thrust surface.
3. Install the timing chain dampener.
4. Install the timing chain dampener bolts. Tighten: Tighten the timing chain dampener bolt to 21 N.m (15 lb ft).
5. Align the crankshaft timing mark (2) to the timing mark on the bottom of the timing chain dampener (1).
6. Hold the camshaft sprocket with the timing chain hanging down and install the timing chain to the crankshaft gear.
7. Align the timing mark on the camshaft gear (4) with the timing mark on top of the timing chain dampener (3).
8. Align the dowel in the camshaft with the dowel hole in the camshaft sprocket.
9. Draw the camshaft sprocket onto the camshaft using the mounting bolt. Tighten: Tighten the bolt to 140 N.m (103 lb ft).
10. Coat the crankshaft and camshaft sprocket with engine oil.
11. Install the engine front cover. Refer to «Engine Front Cover Replacement»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .

J 45059 Torque Angel Meter. See Special Tools and Equipment .

1. Disconnect the battery negative cable. Refer to «Battery Negative Cable Disconnect/Connect Procedure (LA1)»(/buick/rendezvous/i-2001-2007/remont/charging-system/#battery-charging-system-and-starting-system)
2. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/buick/rendezvous/i-2001-2007/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) in General Information.
3. Drain the cooling system. Refer to «Draining and Filling Cooling System»(/buick/rendezvous/i-2001-2007/remont/cooling-fan/#engine-cooling-system) in Engine Cooling.
4. Drain the engine oil. Refer to «Engine Oil and Oil Filter Replacement»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
5. Lower the vehicle.
6. Remove the lower intake manifold. Refer to «Intake Manifold Replacement - Lower»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
7. Remove the exhaust crossover pipe. Refer to «Exhaust Crossover Pipe Replacement (LA1)»(/buick/rendezvous/i-2001-2007/remont/exhaust/#engine-exhaust-system) in Engine Exhaust.
8. Remove the pushrods and valve rocker arms. Refer to «Valve Rocker Arm and Push Rod Replacement»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
9. Remove the engine mount strut bracket. Refer to «Engine Mount Strut Bracket Replacement - Left»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
10. Remove the oil level indicator tube. Refer to «Oil Level Indicator and Tube Replacement»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
11. Remove and discard the cylinder head bolts.
12. Remove the cylinder head.
13. Remove and discard the cylinder head gasket.
14. Clean the following areas: The gasket sealing surfaces on the cylinder head, cylinder block, and intake manifolds. The cylinder block bolt threads. The cylinder head bolts.
15. Clean and inspect the cylinder head.
16. If the cylinder head is being replaced, perform the following steps: Remove the exhaust manifold. Refer to «Exhaust Manifold Replacement - Left (LA1)»(/buick/rendezvous/i-2001-2007/remont/exhaust/#engine-exhaust-system) in Engine Exhaust. Remove the spark plugs from the cylinder head. Refer to «Spark Plug Replacement»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-introduction-service-replacement) in Engine Controls - 3.4L.

1. If the cylinder head is being replaced, perform the following steps: Install the exhaust manifold to the cylinder head. Refer to «Exhaust Manifold Replacement - Left (LA1)»(/buick/rendezvous/i-2001-2007/remont/exhaust/#engine-exhaust-system) in Engine Exhaust. Install the spark plugs to the cylinder head. Refer to «Spark Plug Replacement»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-introduction-service-replacement) in Engine Controls - 3.4L.
2. Install the new cylinder head gasket.
3. Install the engine left side exhaust manifold. Refer to «Exhaust Manifold Replacement - Left (LA1)»(/buick/rendezvous/i-2001-2007/remont/exhaust/#engine-exhaust-system) .
4. Install the spark plugs. Refer to «Spark Plug Replacement»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-introduction-service-replacement) in Engine Controls - 3.4L.
5. Install the cylinder head.
6. Install the new cylinder head bolts. Tighten: Tighten the bolts in the sequence shown to 60 N.m (44 lb ft), Using the J 45059 , torque the cylinder head bolts in sequence, an additional 95 degrees. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
7. Install the oil level indicator tube. Refer to «Oil Level Indicator and Tube Replacement»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
8. Install the engine mount strut bracket. Refer to «Engine Mount Strut Bracket Replacement - Left»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
9. Install the pushrods and valve rocker arms. Refer to «Valve Rocker Arm and Push Rod Replacement»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
10. Install the exhaust crossover pipe. Refer to «Exhaust Crossover Pipe Replacement (LA1)»(/buick/rendezvous/i-2001-2007/remont/exhaust/#engine-exhaust-system) in Engine Exhaust.
11. Install the lower intake manifold. Refer to «Intake Manifold Replacement - Lower»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
12. Fill the engine with new engine oil. Refer to «Engine Oil and Oil Filter Replacement»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
13. Install the battery negative cable to the battery. Refer to «Battery Negative Cable Disconnect/Connect Procedure (LA1)»(/buick/rendezvous/i-2001-2007/remont/charging-system/#battery-charging-system-and-starting-system)
14. Fill the cooling system. Refer to «Draining and Filling Cooling System»(/buick/rendezvous/i-2001-2007/remont/cooling-fan/#engine-cooling-system) in Engine Cooling.

J 45059 Torque Angle Meter. See Special Tools and Equipment .

1. Disconnect the battery negative cable from the battery. Refer to «Battery Negative Cable Disconnect/Connect Procedure (LA1)»(/buick/rendezvous/i-2001-2007/remont/charging-system/#battery-charging-system-and-starting-system) in Engine Electrical.
2. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/buick/rendezvous/i-2001-2007/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) in General Information.
3. Drain the cooling system. Refer to «Draining and Filling Cooling System»(/buick/rendezvous/i-2001-2007/remont/cooling-fan/#engine-cooling-system) in Engine Cooling.
4. Drain the engine oil. Refer to «Engine Oil and Oil Filter Replacement»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
5. Lower the vehicle.
6. Remove the lower intake manifold. Refer to «Intake Manifold Replacement - Lower»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
7. Remove the exhaust crossover pipe. Refer to «Exhaust Crossover Pipe Replacement (LA1)»(/buick/rendezvous/i-2001-2007/remont/exhaust/#engine-exhaust-system) in Engine Exhaust.
8. Remove the pushrods and valve rocker arms. Refer to «Valve Rocker Arm and Push Rod Replacement»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
9. Remove and discard the cylinder head bolts.
10. Remove the cylinder head.
11. Remove and discard the cylinder head gasket.
12. Clean the following areas: The gasket sealing surfaces on the cylinder head, cylinder block, and intake manifolds. The cylinder block bolt threads. The cylinder head bolts.
13. Clean and inspect the cylinder head.
14. If the cylinder head is being replaced, perform the following steps: Remove the exhaust manifold. Refer to «Exhaust Manifold Replacement - Right (LA1)»(/buick/rendezvous/i-2001-2007/remont/exhaust/#engine-exhaust-system) in Engine Exhaust. Remove the spark plugs from the cylinder head. Refer to «Spark Plug Replacement»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-introduction-service-replacement) in Engine Controls - 3.4L.

1. If the cylinder head is being replaced, perform the following steps: Install the exhaust manifold to the cylinder head. Refer to «Exhaust Manifold Replacement - Right (LA1)»(/buick/rendezvous/i-2001-2007/remont/exhaust/#engine-exhaust-system) in Engine Exhaust. Install the spark plugs to the cylinder head. Refer to «Spark Plug Replacement»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-introduction-service-replacement) in Engine Controls - 3.4L.
2. Install the cylinder head gasket.
3. Install the cylinder head.
4. Install the new cylinder head bolts. Tighten: Tighten the bolts in the sequence shown to 60 N.m (44 lb ft), Using the J 45059 , torque the cylinder head bolts in sequence, an additional 95 degrees. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
5. Install the exhaust crossover pipe. Refer to «Exhaust Crossover Pipe Replacement (LA1)»(/buick/rendezvous/i-2001-2007/remont/exhaust/#engine-exhaust-system) in Engine Exhaust.
6. Install the pushrods and valve rocker arms. Refer to «Valve Rocker Arm and Push Rod Replacement»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
7. Install the lower intake manifold. Refer to «Intake Manifold Replacement - Lower»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
8. Fill the engine with new engine oil. Refer to «Engine Oil and Oil Filter Replacement»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
9. Install the battery negative cable to the battery. Refer to «Battery Negative Cable Disconnect/Connect Procedure (LA1)»(/buick/rendezvous/i-2001-2007/remont/charging-system/#battery-charging-system-and-starting-system) in Engine Electrical.
10. Fill the cooling system. Refer to «Draining and Filling Cooling System»(/buick/rendezvous/i-2001-2007/remont/cooling-fan/#engine-cooling-system) in Engine Cooling.

1. Remove the automatic transaxle. Refer to «Transmission Replacement (LA1)»(/buick/rendezvous/i-2001-2007/remont/automatic-trans/#automatic-transaxle-4t65-e-introduction-service-replacement) in Automatic Transaxle - 4T65-E.
2. Remove the engine flywheel bolts and flywheel.
3. Clean the engine flywheel bolt threads and bolt holes.
4. Clean and inspect the engine flywheel. Refer to «Engine Flywheel Cleaning and Inspection»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1__engine-flywheel-cleaning-and-inspection) .

1. Install the engine flywheel and bolts Tighten: Tighten bolts to 71 N.m (52 lb ft).
2. Install the automatic transaxle. Refer to «Transmission Replacement (LA1)»(/buick/rendezvous/i-2001-2007/remont/automatic-trans/#automatic-transaxle-4t65-e-introduction-service-replacement) in Automatic Transaxle - 4T65-E.

J 34686 Rear Main Seal Installer. See Special Tools and Equipment .

1. Remove the engine flywheel. Refer to «Engine Flywheel Replacement»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
2. Insert a screwdriver or a similar tool at an angle through the dust lip.
3. Pry the seal out by moving the handle of the tool towards the end of the crankshaft pilot. Pry around the seal as required until you remove the seal.
4. Inspect the inner diameter (ID) of bore for nicks or burrs. Repair the bore if needed.
5. Inspect the crankshaft for burrs or nicks on the sealing surfaces. Repair or replace the crankshaft as needed.

Note. Do not apply or use any oil lubrication on the crankshaft rear oil seal, or the seal installer. Do not touch the sealing lip of the oil seal once the protective sleeve is removed. Doing so will damage/deform the seal.

Note. Clean the crankshaft sealing surface with a clean, lint free towel. Inspect lead-in edge of crankshaft for burrs/sharp edges that could damage the rear main oil seal. Remove burrs/sharp edges with crocus cloth before proceeding.

1. Carefully remove the protection sleeve from the new crankshaft rear oil seal.
2. Install the crankshaft rear oil seal onto the J34686 by sliding the crankshaft rear oil seal over the mandrel using a twisting motion until the back of the crankshaft rear oil seal bottoms squarely against the collar of the tool.
3. Perform the following steps in order to install the crankshaft rear oil seal. Align the dowel pin of the J 34686 with the dowel pin in the crankshaft. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) . Attach the J 34686 to the crankshaft by hand, or tighten the attaching screws to 5 N. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .m (45 lb in). Turn the T-handle of the J 34686 in order to engage allow the collar to push the seal into the bore. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) . Turn the handle until the collar is tight against the engine block. Ensure that the seal is seated properly. Loosen the T-handle until the T-handle comes to a stop. Remove the attaching screws.
4. Install the flywheel. Refer to «Engine Flywheel Replacement»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .

1. Remove the engine flywheel. Refer to «Engine Flywheel Replacement»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
2. Remove the camshaft rear bearing hole plug.

1. Coat the camshaft rear bearing hole plug with sealer. Use sealer GM P/N 12345493 or equivalent.
2. Use an impact wrench socket and a hammer in order to install the camshaft rear bearing hole plug.
3. Ensure that the camshaft rear bearing plug is installed to specifications.
4. Install the engine flywheel. Refer to «Engine Flywheel Replacement»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .

1. Disconnect the negative battery cable. Refer to «Battery Negative Cable Disconnect/Connect Procedure (LA1)»(/buick/rendezvous/i-2001-2007/remont/charging-system/#battery-charging-system-and-starting-system) in Engine Electrical.
2. Remove the throttle body air inlet duct. Refer to «Air Cleaner Intake Duct Replacement»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-introduction-service-replacement) in Engine Controls - 3.4L.
3. Remove the cruise control cable from the engine and reposition the cable away from the engine. Refer to «Cruise Control Cable Replacement»(/buick/rendezvous/i-2001-2007/remont/cruise-control-systems/#cruise-control-system) in Cruise Control.
4. Remove and discard the accelerator control cable from the engine and reposition the cable away from the engine. Refer to «Accelerator Controls Cable Replacement»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-introduction-service-replacement) in Engine Controls - 3.4L.
5. Drain the cooling system. Refer to «Draining and Filling Cooling System»(/buick/rendezvous/i-2001-2007/remont/cooling-fan/#engine-cooling-system) in Engine Cooling.
6. Disconnect the radiator hoses from the engine. Refer to «Radiator Hose Replacement - Inlet (LA1)»(/buick/rendezvous/i-2001-2007/remont/cooling-fan/#engine-cooling-system) and «Radiator Hose Replacement - Outlet (LA1)»(/buick/rendezvous/i-2001-2007/remont/cooling-fan/#engine-cooling-system) in Engine Cooling.
7. Disconnect the heater hoses from the engine. Refer to «Heater Hose Replacement - Inlet (LA1)»(/buick/rendezvous/i-2001-2007/remont/automatic-hvac-system/#heating-ventilation-and-air-conditioning) and «Heater Hose Replacement - Outlet (LA1)»(/buick/rendezvous/i-2001-2007/remont/automatic-hvac-system/#heating-ventilation-and-air-conditioning) in HVAC Systems - Manual.
8. Remove the engine mount struts. Refer to «Engine Mount Strut Replacement - Left»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) and «Engine Mount Strut Replacement - Right»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
9. Disconnect the fuel lines at quick connects. Refer to «Fuel Hose/Pipes Replacement - Engine Compartment»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-introduction-service-replacement) in Engine Controls - 3.4L.
10. Remove the upper engine wiring harness from engine and transmission.
11. Remove the vacuum hoses from the engine. Refer to «Emission Hose Routing Diagram»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-introduction-service-replacement) in Engine Controls - 3.4L.
12. Remove the vacuum brake booster hose.
13. Remove the automatic transaxle range selector cable. Refer to «Automatic Transmission Range Selector Cable Replacement»(/buick/rendezvous/i-2001-2007/remont/automatic-trans/#automatic-transaxle-4t65-e-introduction-service-replacement) in Automatic Transaxle - 4T65-E.
14. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/buick/rendezvous/i-2001-2007/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) in General Information.
15. Drain the engine oil. Refer to «Engine Oil and Oil Filter Replacement»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
16. Remove the lower engine wiring harness from engine and transmission.
17. Remove the three-way catalytic converter. Refer to «Catalytic Converter Replacement»(/buick/rendezvous/i-2001-2007/remont/exhaust/#engine-exhaust-system) in Engine Exhaust.
18. Remove rear propshaft. Refer to «Propeller Shaft Replacement»(/buick/rendezvous/i-2001-2007/remont/driveshaft-universal-joints/#propeller-shaft) in Driveline/Axle-Propeller Shaft. (AWD Only)
19. Remove the front tires and wheels. Refer to «Tire and Wheel Removal and Installation»(/buick/rendezvous/i-2001-2007/remont/wheel-tire-system/#tires-and-wheels) in Tires and Wheels.
20. Remove lower radiator baffle assembly.
21. Remove the engine splash shields. Refer to «Splash Shield Replacement - Engine»(/buick/rendezvous/i-2001-2007/remont/exterior-body-panels/#body-front-end) in Body Front End.
22. Remove the stabilizer shaft links from the lower control arms. Refer to «Stabilizer Shaft Link Replacement»(/buick/rendezvous/i-2001-2007/remont/suspension-front/#front-suspension-system) in Front Suspension.
23. Remove the tie rod ends from the steering knuckles. Refer to «Steering Knuckle Replacement»(/buick/rendezvous/i-2001-2007/remont/suspension-front/#front-suspension-system) in Front Suspension.
24. Remove the lower ball joints from the knuckles. Refer to «Lower Ball Joint Replacement»(/buick/rendezvous/i-2001-2007/remont/suspension-front/#front-suspension-system) in Front Suspension.
25. Remove the transaxle cooler lines and bracket from the transaxle. Refer to «Automatic Transmission Oil Cooler Hose Replacement»(/buick/rendezvous/i-2001-2007/remont/automatic-trans/#automatic-transaxle-4t65-e-introduction-service-replacement) in Automatic Transaxle - 4T65-E.
26. Remove A/C compressor bolts and position compressor aside.
27. Disconnect the drive axles from the transaxle. Refer to «Wheel Drive Shaft Replacement - Front»(/buick/rendezvous/i-2001-2007/remont/axle-shafts/#wheel-drive-shafts__wheel-drive-shaft-replacement-front) in Drive Axle.
28. Secure the drive axles to the steering knuckle/struts.
29. Remove the intermediate shaft pinch bolt from the steering gear. Refer to «Intermediate Steering Shaft Replacement»(/buick/rendezvous/i-2001-2007/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) in Steering Wheel and Column.
30. Lower the vehicle until the frame contacts the transaxle table.
31. Remove the frame bolts. Refer to «Frame Replacement - Front (W/AWD)»(/buick/rendezvous/i-2001-2007/remont/frames-subframes-crossmembers/#frame-and-underbody) or «Frame Replacement - Front (W/FWD)»(/buick/rendezvous/i-2001-2007/remont/frames-subframes-crossmembers/#frame-and-underbody) in Frame and Underbody.
32. Raise the vehicle in order to separate the powertrain/frame assembly from the vehicle.
33. Remove starter. Refer to «Starter Motor Replacement (LA1)»(/buick/rendezvous/i-2001-2007/remont/charging-system/#battery-charging-system-and-starting-system) in Engine Electrical.
34. Remove the engine flywheel to torque converter bolts.
35. Install engine hoist to engine.
36. Remove engine mount to frame nuts.
37. Remove the engine-to-transaxle bolts (3, 4, 5, 6) and studs (1, 2).
38. Separate and remove the engine from the transaxle/frame and install to the engine stand.

1. Remove engine from engine stand.
2. Install and align the engine to the transaxle/frame.
3. Install the engine-to-transaxle bolts (3, 4, 5, 6) and studs (1, 2). Tighten: Tighten the bolts (3, 4, 5, 6) and studs (1, 2) to 75 N.m (55 lb ft).
4. Install engine mount to frame nuts. Tighten: Tighten nuts to 43 N.m (32 lb ft).
5. Remove engine hoist from engine.
6. Install the engine flywheel to torque converter bolts. Tighten: Tighten bolts to 62 N.m (46 lb ft).
7. Install starter. Refer to «Starter Motor Replacement (LA1)»(/buick/rendezvous/i-2001-2007/remont/charging-system/#battery-charging-system-and-starting-system) in Engine Electrical.
8. Position the transaxle table with the powertrain/frame under the vehicle.
9. Lower the vehicle until the frame contacts the transaxle table.
10. Install the new frame bolts. Refer to «Frame Replacement - Front (W/AWD)»(/buick/rendezvous/i-2001-2007/remont/frames-subframes-crossmembers/#frame-and-underbody) or «Frame Replacement - Front (W/FWD)»(/buick/rendezvous/i-2001-2007/remont/frames-subframes-crossmembers/#frame-and-underbody) in Frame and Underbody.
11. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/buick/rendezvous/i-2001-2007/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) in General Information.
12. Remove the transaxle table.
13. Install the intermediate shaft pinch bolt to steering gear. Refer to «Intermediate Steering Shaft Replacement»(/buick/rendezvous/i-2001-2007/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) in Steering Wheel and Column.
14. Install the drive axles to the transaxle. Refer to «Wheel Drive Shaft Replacement - Front»(/buick/rendezvous/i-2001-2007/remont/axle-shafts/#wheel-drive-shafts__wheel-drive-shaft-replacement-front) in Drive Axle.
15. Install the transaxle cooler lines and bracket to the transaxle. Refer to «Automatic Transmission Oil Cooler Hose Replacement»(/buick/rendezvous/i-2001-2007/remont/automatic-trans/#automatic-transaxle-4t65-e-introduction-service-replacement) in Automatic Transaxle - 4T65-E.
16. Install A/C compressor and bolts.
17. Install the lower ball joints to the knuckles. Refer to «Lower Ball Joint Replacement»(/buick/rendezvous/i-2001-2007/remont/suspension-front/#front-suspension-system) in Front Suspension.
18. Install the tie rod ends to the steering knuckles. Refer to «Steering Knuckle Replacement»(/buick/rendezvous/i-2001-2007/remont/suspension-front/#front-suspension-system) in Front Suspension.
19. Install the stabilizer shaft links to the lower control arms. Refer to «Stabilizer Shaft Link Replacement»(/buick/rendezvous/i-2001-2007/remont/suspension-front/#front-suspension-system) in Front Suspension.
20. Install the engine splash shields. Refer to «Splash Shield Replacement - Engine»(/buick/rendezvous/i-2001-2007/remont/exterior-body-panels/#body-front-end) in Body Front End.
21. Install lower radiator baffle.
22. Install the front tires and wheels. Refer to «Tire and Wheel Removal and Installation»(/buick/rendezvous/i-2001-2007/remont/wheel-tire-system/#tires-and-wheels) in Tires and Wheels.
23. Install the three-way catalytic converter. Refer to «Catalytic Converter Replacement»(/buick/rendezvous/i-2001-2007/remont/exhaust/#engine-exhaust-system) in Engine Exhaust.
24. Install the lower engine wiring harness to engine and transmission.
25. Install rear propshaft. Refer to «Propeller Shaft Replacement»(/buick/rendezvous/i-2001-2007/remont/driveshaft-universal-joints/#propeller-shaft) in Driveline/Axle-Propeller Shaft. (AWD Only)
26. Lower the vehicle.
27. Install the automatic transaxle range selector cable. Refer to «Automatic Transmission Range Selector Cable Replacement»(/buick/rendezvous/i-2001-2007/remont/automatic-trans/#automatic-transaxle-4t65-e-introduction-service-replacement) in Automatic Transaxle - 4T65-E.
28. Install the vacuum brake booster hose.
29. Install the vacuum hoses to the engine. Refer to «Emission Hose Routing Diagram»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-introduction-service-replacement) in Engine Controls - 3.4L.
30. Install the upper engine wiring harness to engine and transmission.
31. Install the fuel lines at quick connects. Refer to «Fuel Hose/Pipes Replacement - Engine Compartment»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-introduction-service-replacement) in Engine Controls - 3.4L.
32. Install the engine mount struts. Refer to «Engine Mount Strut Replacement - Left»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) and «Engine Mount Strut Replacement - Right»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
33. Connect the heater hoses to the engine. Refer to «Heater Hose Replacement - Inlet (LA1)»(/buick/rendezvous/i-2001-2007/remont/automatic-hvac-system/#heating-ventilation-and-air-conditioning) and «Heater Hose Replacement - Outlet (LA1)»(/buick/rendezvous/i-2001-2007/remont/automatic-hvac-system/#heating-ventilation-and-air-conditioning) in HVAC Systems - Manual.
34. Connect the radiator hoses to the engine. Refer to «Radiator Hose Replacement - Inlet (LA1)»(/buick/rendezvous/i-2001-2007/remont/cooling-fan/#engine-cooling-system) and «Radiator Hose Replacement - Outlet (LA1)»(/buick/rendezvous/i-2001-2007/remont/cooling-fan/#engine-cooling-system) in Engine Cooling.
35. Install the NEW accelerator control cable to the engine. Refer to «Accelerator Controls Cable Replacement»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-introduction-service-replacement) in Engine Controls - 3.4L.
36. Install the cruise control cable to the engine. Refer to «Cruise Control Cable Replacement»(/buick/rendezvous/i-2001-2007/remont/cruise-control-systems/#cruise-control-system) in Cruise Control.
37. Install the throttle body air inlet duct. Refer to «Air Cleaner Intake Duct Replacement»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-introduction-service-replacement) in Engine Controls - 3.4L.
38. Fill the cooling system with engine coolant. Refer to «Draining and Filling Cooling System»(/buick/rendezvous/i-2001-2007/remont/cooling-fan/#engine-cooling-system) in Engine Cooling.
39. Adjust the transaxle fluid level. Refer to the following information: «Capacities - Approximate Fluid»(/buick/rendezvous/i-2001-2007/remont/lubrication-system/#maintenance-and-lubrication__capacities-approximate-fluid) in Maintenance and Lubrication «Fluid and Lubricant Recommendations»(/buick/rendezvous/i-2001-2007/remont/lubrication-system/#maintenance-and-lubrication__fluid-and-lubricant-recommendations) in Maintenance and Lubrication
40. Fill the engine with oil. Refer to «Engine Oil and Oil Filter Replacement»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
41. Connect the negative battery cable. Refer to «Battery Negative Cable Disconnect/Connect Procedure (LA1)»(/buick/rendezvous/i-2001-2007/remont/charging-system/#battery-charging-system-and-starting-system) in Engine Electrical.
42. Perform the CKP system variation learn procedure. Refer to «CKP System Variation Learn Procedure»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-introduction-service-replacement__ckp-system-variation-learn-procedure) in Engine Controls - 3.4L.
43. Inspect for proper fluid levels and possible fluid leaks.

1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/buick/rendezvous/i-2001-2007/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) in General Information.
2. Position the oil drain pan under the engine oil drain plug.
3. Remove the engine oil drain plug.
4. Clean and inspect the engine oil drain plug, repair or replace if necessary.
5. Clean and inspect the engine oil drain plug sealing surface on the oil pan, repair or replace oil pan if necessary.
6. Remove the oil filter.
7. Clean and inspect the oil filter sealing area.

1. Lightly oil the replacement oil filter gasket with clean oil and install the new oil filter.
2. Install the new oil filter. Refer to «Maintenance Items»(/buick/rendezvous/i-2001-2007/remont/lubrication-system/#maintenance-and-lubrication__maintenance-items) in Maintenance and Lubrication. Tighten: Tighten the new oil filter to 3/4 to 1 full turn, after the oil filter gasket contacts the oil filter mounting surface.
3. Install the engine oil drain plug. Tighten: Tighten the engine oil drain plug to 25 N.m (18 lb ft).
4. Remove the oil drain pan.
5. Lower the vehicle.
6. Fill the engine with new engine oil. Refer to the following information in Maintenance and Lubrication. «Capacities - Approximate Fluid»(/buick/rendezvous/i-2001-2007/remont/lubrication-system/#maintenance-and-lubrication__capacities-approximate-fluid) «Fluid and Lubricant Recommendations»(/buick/rendezvous/i-2001-2007/remont/lubrication-system/#maintenance-and-lubrication__fluid-and-lubricant-recommendations) «Explanation of Scheduled Services»(/buick/rendezvous/i-2001-2007/remont/lubrication-system/#maintenance-and-lubrication)

Draining Fluids and Oil Filter Removal

1. Remove the oil pan drain plug.
2. Drain the engine oil.
3. Remove the oil filter.
4. Remove the coolant drain plug from the left side, if applicable.
5. Remove the coolant drain plug from the right side.
6. Drain the coolant.

J 24420-C Harmonic Balancer Puller. See Special Tools and Equipment .

1. Remove the crankshaft balancer retaining bolt and washer.
2. Remove the crankshaft balancer using the J 24420-C . See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .

Engine Flywheel Removal

1. Remove the flywheel bolts.
2. Remove the flywheel.

Drive Belt Tensioner Removal

1. Remove the drive belt tensioner bolt.
2. Remove the drive belt tensioner.

Engine Mount Strut and Air Conditioning Compressor Bracket Removal

1. Remove the engine mount strut and A/C compressor bracket bolts.
2. Remove the engine mount strut and A/C compressor bracket.

Engine Mount Strut and Engine Lift Bracket Removal

1. Remove the engine mount strut and lift bracket bolts.
2. Remove the engine mount strut and lift bracket.

Engine Lift Bracket and Generator Bracket Removal

1. Remove the generator bracket bolts (1-3).
2. Remove the generator bracket.
3. Remove the front engine lift bracket.

Oil Level Indicator and Tube Removal

1. Remove the thermostat bypass pipe to throttle body nut (2).
2. Remove the thermostat bypass pipe to throttle body hose clamps (1).
3. Remove the thermostat bypass pipe to engine front cover bolt (4).
4. Remove the thermostat bypass pipe hose clamp (5) and hose from pipe.
5. Remove the thermostat bypass pipe (3).
6. Remove the oil level indicator tube bolt.
7. Remove the oil level indicator and oil level indicator tube.

Oil Filter Adapter Removal

1. Remove the oil filter bypass hole plug.
2. Remove the oil filter fitting, if necessary.
3. Remove the oil filter bypass valve, by prying out with a suitable tool.

Exhaust Manifold Removal - Left

1. Remove the spark plug wires.
2. Remove the spark plugs.
3. Remove the exhaust manifold heat shield bolts.
4. Remove the exhaust manifold heat shield.
5. Remove the exhaust manifold nuts.
6. Remove the exhaust manifold.
7. Remove the exhaust manifold gasket.
8. Remove the exhaust studs, if required.

Exhaust Manifold Removal - Right

1. Remove the spark plug wires.
2. Remove the spark plugs.
3. Remove the EGR pipe from the exhaust manifold.
4. Remove the heated oxygen sensor.
5. Remove the exhaust manifold heat shield bolts.
6. Remove the exhaust manifold heat shields.
7. Remove the exhaust manifold nuts.
8. Remove the exhaust manifold.
9. Remove the exhaust manifold gasket.
10. Remove the exhaust studs, if required.

Water Outlet and Thermostat Removal

1. Remove the water outlet bolts.
2. Remove the water outlet.
3. Remove the thermostat.

Valve Rocker Arm Cover Removal - Left

1. Remove the valve rocker arm cover bolts.
2. Remove the valve rocker arm cover.
3. Trim valve cover gasket and sealant away from lower intake manifold gasket at the cylinder head to lower intake manifold joints (1).
4. Remove the valve rocker arm cover gasket.

Valve Rocker Arm Cover Removal - Right

1. Remove the electronic ignition control module nuts and bolts.
2. Remove the electronic ignition control module.
3. Remove the electronic ignition control module studs.
4. Remove the valve rocker arm cover bolts.
5. Remove the valve rocker arm cover.
6. Trim valve cover gasket and sealant away from lower intake manifold gasket at the cylinder head to lower intake manifold joints (1).
7. Remove the valve rocker arm cover gasket.

Intake Manifold Removal - Upper

1. Remove the manifold absolute pressure (MAP) sensor electrical connector.
2. Remove the MAP sensor bolts (1).
3. Remove the MAP sensor from bracket.
4. Remove the MAP sensor bracket and bracket bolt (1, 2).
5. Remove the exhaust gas recirculation (EGR) valve pipe and bolt from the EGR valve.
6. Remove the EGR valve bolts.
7. Remove the EGR valve and gasket.
8. Remove the vacuum harness assembly.
9. Remove the accelerator cable bracket and bracket bolts.
10. Remove the purge valve bracket bolt, hose and valve assembly.
11. Remove the throttle body bolts.
12. Remove the throttle body and gasket.
13. Remove the upper intake manifold bolts.
14. Remove the upper intake manifold and gaskets.

Intake Manifold Removal - Lower

1. Remove the fuel feed and return pipe retaining clip bolt.
2. Remove the fuel feed and return pipe retaining clip.
3. Remove the fuel injector rail bolts.
4. Remove the fuel injector rail assembly.
5. Remove the heater inlet pipe nut.
6. Remove the heater inlet pipe.
7. Remove the lower intake manifold bolts.
8. Remove the lower intake manifold.

Valve Rocker Arm and Push Rod Removal

1. Remove the valve rocker arm bolts.
2. Remove the valve rocker arms.
3. Remove the push rods. The intake push rods measure 146 mm (5.75 in). The exhaust push rods measure 152.51 mm (6.0 in).
4. Remove the intake manifold gaskets.

Valve Lifter Removal

1. Remove the valve lifter guide bolts.
2. Remove the valve lifter guides.
3. Remove the valve lifters.

Water Pump Removal

1. Remove the water pump pulley bolts.
2. Remove the water pump pulley.
3. Remove the water pump bolts.
4. Remove the water pump.
5. Remove the water pump gasket.

Cylinder Head Removal - Left

1. Remove the cylinder head bolts and discard.
2. Remove the cylinder head.
3. Remove the cylinder head gasket.
4. Remove the cylinder head locator dowel pins if required.

Cylinder Head Removal - Right

1. Remove the cylinder head bolts and discard.
2. Remove the cylinder head.
3. Remove the cylinder head gasket.
4. Remove the cylinder head locator dowel pins if required.

Oil Pan Removal

1. Remove the oil pan side bolts.
2. Remove the oil pan bolts.
3. Remove the oil pan.
4. Remove the oil pan gasket.

Oil Pump Removal

1. Remove the oil pump bolt.
2. Remove the oil pump and oil pump drive shaft.
3. Remove the crankshaft oil deflector nuts.
4. Remove the crankshaft oil deflector.

Oil Pump Drive Removal

1. Remove the oil pump drive clamp bolt.
2. Remove the oil pump drive clamp.
3. Remove the oil pump drive.

Scheme 6

Pry out the crankshaft front oil seal using a suitable tool. Use care not to damage the engine front cover or the crankshaft.

Engine Front Cover Removal

1. Remove the crankshaft position sensor wiring bracket bolt.
2. Remove the crankshaft position sensor wiring bracket.
3. Remove the engine front cover bolts (1), (2), and (3).
4. Remove the engine front cover.
5. Remove the engine front cover gasket.

Timing Chain and Sprockets Removal

1. Remove the camshaft sprocket bolt.
2. Remove the camshaft sprocket and timing chain.
3. Remove the crankshaft sprocket.
4. Remove the timing chain dampener bolts.
5. Remove the timing chain dampener.

Camshaft Removal

1. Remove the camshaft position sensor and sensor bolt.
2. Remove the camshaft thrust plate screws.
3. Remove the camshaft thrust plate.
4. Complete the following steps in order to remove the camshaft: Install a large screwdriver in the camshaft bolt hole. Do not damage the threads. Carefully rotate and pull the camshaft out of the camshaft bearings.

Piston, Connecting Rod, and Bearing Removal

Tools Required

1. J 24270 Ridge Reamer. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
2. J 5239 Connecting Rod Bolt Guide. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .

1. Mark the piston with the number of the cylinder from which the piston is being removed.
2. Mark the connecting rod and the connecting rod cap in order to ensure correct assembly.
3. Use the J 24270 in order to remove the cylinder bore ring ridge. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) . Complete the following steps: Turn the crankshaft until the piston is at the bottom of the stroke. Cover the piston with a cloth. Remove the cylinder ring ridge. Turn the crankshaft until the piston is at the top of the stroke. Remove the cloth. Remove the metal shavings from the cylinder and piston.
4. Remove the connecting rod nuts and cap.
5. Remove the connecting rod cap and bearing half.
6. Install J 5239 onto the connecting rod bolts. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
7. Remove the connecting rod and piston assembly.
8. Push out the assembly using a suitable tool.

Crankshaft Rear Oil Seal Removal

1. Remove the crankshaft rear oil seal.
2. Pry out the crankshaft rear oil seal out using a suitable tool.

Crankshaft and Bearings Removal

1. Remove the crankshaft position sensor heat shield nut and heat shield.
2. Remove the crankshaft position sensor stud.
3. Remove the crankshaft position sensor from the side of the block.
4. Remove the crankshaft main bearing cap bolt and studs.
5. Remove the crankshaft main bearing caps and lower crankshaft main bearing halves.
6. Remove the crankshaft.
7. Remove the upper crankshaft main bearing halves.

J 33049 Camshaft Bearing Remover/Installer

1. Select the expander assembly and driving washer.
2. Assemble the J 33049 .
3. Drive out the camshaft bearings. Use the J 33049 .

Engine Block Disassemble

1. Remove the camshaft rear bearing hole plug.
2. Remove the rear oil gallery plugs (1, 2, 3).
3. Remove the front oil gallery plugs (1, 2).
4. Remove all of the remaining engine block plugs.
5. Remove the knock sensor.
6. Remove the engine oil pressure switch.

Engine Block Cleaning and Inspection

Tools Required

1. J 8001 Dial Indicator Set
2. J 8087 Cylinder Bore Gage. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .

1. Clean the sealing material from the gasket mating surfaces.
2. Boil the engine block in caustic solution.
3. Flush the engine block with clean water or steam.
4. Clean the oil passages.
5. Clean the blind holes.
6. Spray the cylinder bores and the machined surfaces with engine oil.
7. Inspect the threaded holes.
8. Clean the holes with a tap. Drill out the holes and install thread inserts, as needed.
9. Use a straight edge and a feeler gauge in order to test the deck surface for flatness. Replace the block if it is outside of the specification limit.
10. Inspect the oil pan rail for nicks. Inspect the front cover attaching area for nicks. Use a flat mill file in order to remove any nicks.
11. Inspect the mating surfaces of the transmission case.
12. Use the following procedure in order to measure the engine block flange runout at the 6 mounting bolt hole bosses: Temporarily install the crankshaft. Measure the crankshaft flange runout. Hold the J 8001 gage plate flat against the crankshaft flange. Place the dial indicator stem on the transmission mounting bolt hole boss. Set the indicator to 0. Record the readings obtained from all of the bolt hole bosses. The measurements should not vary more than 0.25 mm (0.010 in). Retest the crankshaft flange runout if the readings vary more than 0.25 mm (0.010 in). If the crankshaft flange runout is not within the specification, replace the engine block.
13. Inspect the crankshaft main bearing bores. Use the J 8087 in order to measure the bearing bore concentricity and alignment at the following locations: The camshaft The crankshaft
14. Replace the engine block if the bores are out of specification.
15. Use the J 8087 in order to inspect the cylinder bores. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) . Inspect the bores for the following conditions: Wear Taper Runout Ridging
16. Leave sufficient material in order to allow honing when fitting the piston.

Boring Procedure

1. Before honing or boring, measure all of the new pistons. Select the smallest piston for the piston fitting. Slightly varied pistons in a set may provide correction, if the first piston is too loosely fitted.
2. Before using any type of boring bar, file the top of the engine block to remove any dirt or burrs. If the cylinder block is not straight, the boring bar may be tilted, causing the bored cylinder wall to have incorrect right angles to the crankshaft.
3. Carefully follow the instructions furnished by the manufacturer regarding use of equipment.
4. Install all crankshaft main bearing caps to specification when boring cylinders. Cover or tape the crankshaft bearings and other internal parts to protect these parts during the boring or honing operation.
5. Leave 0.03 mm (0.001 in) on the diameter for finish honing when performing the final cut with a boring bar. Carefully perform the honing and boring operation to maintain the specified clearances between pistons, rings, and cylinder bores.

Honing Procedure

1. Follow the manufacturer's recommendations for use, cleaning, and lubrication when honing the cylinders. Use only clean, sharp stones of the proper grade for the amount of material to be removed. Dull, dirty stones cut unevenly and generate excessive heat. When using coarse or medium-grade stones, leave sufficient metal so all stone marks may be removed with the fine stones used for finishing to provide the proper clearance.
2. During the honing operation, thoroughly clean the cylinder bore. Check for the correct piston fit.
3. Make full strokes in the cylinder to eliminate taper. Repeatedly check the measurement at the top, the middle, and the bottom of the cylinder bore.
4. When finish honing a cylinder bore to fit a piston, move the hone up and down at a sufficient speed to obtain a fine and uniform surface finish in a cross hatch pattern.
5. The finish marks should be clean but not sharp. The finish marks should be free from imbedded particles and torn or folded metal.
6. Determine the finish hone cylinder measurement by measuring the piston to be installed, and by adding the average of the clearance specification. Measure the block and the piston at normal room temperature.
7. True up the refinished cylinder bores. Final hone each cylinder bore to remove all stone or cutter marks.
8. After final honing and before the piston is checked for fit, clean the 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 will wear the new rings, the cylinder bores, and the bearings lubricated by the contaminated oil. After washing dry the bore.
9. Permanently mark the piston for the cylinder to which the piston has been fitted.
10. Apply clean engine oil to each bore to prevent rusting.

Engine Block Assemble

1. Apply sealer GM P/N 12346004, (Canadian P/N 10953480) or the equivalent to the oil pressure switch threads.
2. Install the engine oil pressure switch. Tighten: Tighten the engine oil pressure switch to 16 N.m (12 lb ft).
3. Apply sealer GM P/N 12346004, (Canadian P/N 10953480) or the equivalent to the knock sensor threads.
4. Install the knock sensor. Tighten: Tighten the knock sensor to 19 N.m (14 lb ft).
5. Apply sealer GM P/N 12346004, (Canadian P/N 10953480) or the equivalent to the front oil gallery plug threads (1 and 2).
6. Install the front oil gallery plug (1). Tighten: Tighten the oil gallery plug (1) to 19 N.m (14 lb ft).
7. Install the front oil gallery plug (2). Tighten: Tighten the oil gallery plug (2) to 33 N.m (24 lb ft).
8. Apply sealer GM P/N 12346004, (Canadian P/N 10953480) or the equivalent to the rear oil gallery plug threads (1 and 4).
9. Install the rear oil gallery plugs (1 and 4). Tighten: Tighten the oil gallery plugs (1 and 4) to 19 N.m (14 lb ft).
10. Install the rear oil gallery plugs (2 and 3). Tighten: Tighten the oil gallery plugs (2 and 3) to 33 N.m (24 lb ft).
11. Apply sealer GM P/N United States 12346004, GM P/N Canada 10953480 or the equivalent to the engine block plugs.
12. Install the remaining engine block plugs.
13. Apply sealant GM P/N 12346004, (Canadian P/N 10953480) or the equivalent to the coolant drain plug threads.
14. Install the left coolant drain plug. Tighten: Tighten the coolant drain plug to 19 N.m (14 lb ft).
15. Apply sealant GM P/N 12346004, (Canadian P/N 10953480) or the equivalent to the coolant drain plug threads.
16. Install the right coolant drain plug. Tighten: Tighten the coolant drain plug to 19 N.m (14 lb ft).

Crankshaft and Bearings Cleaning and Inspection

Tools Required

1. J 8087 Cylinder Bore Gage
2. J 45059 Angle Meter. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .

1. Clean the crankshaft of the following elements: Oil Sludge Carbon
2. Inspect the crankshaft oil passages for obstructions.
3. Inspect the crankshaft keyway for the following conditions: A worn crankshaft key (1) A worn crankshaft keyway (2)
4. Inspect the crankshaft threads (3) for damage.
5. Inspect the crankshaft bearing journals and the crankshaft thrust surfaces for the following conditions: Wear without any grooves or scratches (1) Grooves or scoring (2) Scratches or excessive wear (3) Pitting or embedded bearing material (4) - Inspect the corresponding crankshaft bearing inserts for embedded material and determine the source of the material. Overheating or discoloration
6. The crankshaft bearings are the precision insert type.
7. Inspect the outer surfaces of the crankshaft bearings for the following conditions: Wear-surface wear indicates either movement of the insert, or high spots in the surrounding material - spot wear. Overheating or discoloration Looseness or rotation indicated by flattened tangs and wear grooves
8. Inspect the crankshaft main bearings for craters or pockets. Flattened sections on the crankshaft bearing halves also indicate fatigue.
9. Inspect the thrust surfaces of the main thrust bearing for the following conditions: Wear Grooving-Grooves are caused by irregularities of the crankshaft thrust surface.
10. Inspect the crankshaft bearings for excessive scoring or discoloration.
11. Inspect the crankshaft main bearings for dirt or imbedded debris.
12. Inspect the crankshaft main bearings for improper seating indicated by bright, polished sections.
13. Inspect the crankshaft bearings for uneven side-to-side wear. This may indicate a bent crankshaft or a tapered bearing journal.
14. Inspect the connecting rod bearing bores or crankshaft main bearing bores using the following procedure: Tighten the bearing cap to specification. Use the J 8087 in order to measure the bearing bore for taper and out-of-round. Record the readings for bearing selection. No taper or out-of-round should exist.

Bearing Selection

Measure the bearing clearance to determine the correct replacement bearing insert size. There are two methods to measure bearing clearance. Method A gives more reliable results and is preferred.

1. Method A yields measurement from which the bearing clearance can be computed.
2. Method B yields the bearing clearance directly. Method B does not give any indication of bearing run-out.

Method A

1. Measure the crankshaft bearing journal diameter with a micrometer in several places, 90 degrees apart. Average the measurements.
2. Measure the crankshaft bearing journal taper and runout.
3. Install the crankshaft bearing inserts. Tighten the bearing cap bolts to specification using J 45059 . See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
4. Measure the connecting rod inside diameter in the same direction as the length of the rod with an inside micrometer.
5. Measure the crankshaft main bearing inside diameter with an inside micrometer.
6. Select a set of bearing inserts that will produce the desired clearance.
7. If the specified clearances cannot be met, the crankshaft journals must be reconditioned and undersized bearing inserts installed.

Method B

1. Clean the used bearing inserts.
2. Install the used bearing inserts.
3. Place a piece of gaging plastic across the entire bearing width.
4. Install the bearing caps. NOTE: In order to prevent the possibility of cylinder block or crankshaft bearing cap damage, the crankshaft bearing caps are tapped into the cylinder block cavity using a brass, lead, or a leather mallet before the attaching bolts are installed. Do not use attaching bolts to pull the crankshaft bearing caps into the seats. Failure to use this process may damage a cylinder block or a bearing cap.
5. Install the bearing cap bolts to specification using J 45059 . See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
6. Remove the bearing cap, leaving the gaging plastic in place. It does not matter whether the gaging plastic adheres to the journal or to the bearing cap.
7. Measure the gaging plastic at its widest point with the scale printed on the gaging plastic package.
8. Remove the gaging plastic.
9. Select a set of bearing inserts that will produce the desired clearance.

Crankshaft Balancer Cleaning and Inspection

1. Inspect the crankshaft balancer sealing area for grooves (1).
2. Inspect the crankshaft balancer belt ribs for dents or damage.
3. Replace the crankshaft balancer if necessary.

Engine Flywheel Cleaning and Inspection

1. Inspect the engine flywheel for cracks.
2. Inspect the engine flywheel teeth for damage.
3. Replace the engine flywheel if necessary.

J 24086-C Piston Pin Remover/Installer Set

Disassembly Procedure

1. Using piston ring pliers, remove the piston rings from the piston.
2. Install fork insert J 24086-310 into fixture J 24086-10 piston pin remover/installer base, which are part of J 24086-C .
3. Install the piston and connecting rod assembly onto J 24086-10.
4. Install the J 24086-107 onto the piston pin and J 24086-88A through the fixture and onto J 24086-107, which are part of J 24086-C .
5. Press the piston pin from the piston and connecting rod assembly.
6. The piston and pin are a matched set and are not to be serviced separately. Mark, sort organize the piston and the matching piston pin.

J 8087 Cylinder Bore Gage

Cleaning and Inspection Procedure

1. Clean the piston and connecting rod in solvent.
2. Dry off the piston and connecting rod with compressed air.
3. Clean the piston ring grooves with a suitable ring groove cleaning tool.
4. Clean the piston oil lubrication holes and slots.
5. Inspect the piston for the following: Eroded areas (1) on the top of the piston Scuffed or damaged skirt (2) Damage to the pin bore (3) Cracks in the piston ring lands, the piston skirt, or the pin bosses Piston ring grooves for nicks, burrs, or other warpage which may cause the piston ring to bind
6. Inspect the piston pin for scoring, wear or other damage.
7. Measure the piston ring-to-piston ring groove side clearance. Insert the edge of the piston ring into the piston ring groove. Roll the piston ring completely around the piston ring groove. If binding is caused by distorted piston ring groove, replace the piston. If binding is caused by a distorted piston ring, replace the piston ring.
8. Measure the piston ring side clearance with a feeler gage.
9. If the side clearance is too small try another ring set.
10. If the proper piston ring-to-piston ring groove clearance cannot be achieved, replace the piston and pin assembly. Proper ring-to-piston ring groove clearance for the top ring is 0.03-0.076 mm (0.001-0.003 in). Proper ring-to-piston ring groove clearance for the second ring is 0.04-0.078 mm (0.002-0.003 in).
11. Measure the piston pin diameter using a micrometer.
12. Measure the piston pin bore using an inside micrometer.
13. Subtract the piston pin diameter from the piston pin bore diameter in order to determine the piston pin-to-piston pin bore clearance.
14. Piston-to-piston pin bore clearance must measure 0.008-0.016 mm (0.0003-0.0006 in). Replace the piston and the piston pin if the piston and the piston pin are not within specifications.
15. Measure the piston diameter with a micrometer at a right angle to the piston bore with the piston pin removed, and record the measurement. Measure the piston at 43 mm (1.692 in) from dome of piston. Piston diameter must measure no less than 93.960 mm (3.699 in). Replace the piston and the pin as an assembly if the piston is not within specifications.
16. Measure the cylinder bore, using J 8087 .
17. Measure the J 8087 . Record this reading.
18. Subtract the diameter of the piston from the diameter of the cylinder bore to determine the piston-to-bore clearance. The cylinder bore clearance must be no more than 0.080 mm (0.003 in).
19. If a used piston is not acceptable, inspect the service piston size and determine if a new piston may be selected. Service pistons are available in standard and 0.5 mm (0.012 in) oversize.
20. When a piston has been selected, mark the piston in order to identify the cylinder for which the piston was fitted.
21. Inspect the connecting rod for an out-of-round bearing bore. If the out-of-round measurement exceeds 0.005 mm (0.0002 in) the connecting rod must be replaced.
22. Inspect the connecting rod for twisting. Install the connecting rod cap. Place the connecting rod assembly on a checking fixture. Inspect the assembly for bending or twisting. Do not attempt to straighten the connecting rod. Ensure that the connecting rod meets the following conditions: The connecting rods are not bent more than 0.18 mm (0.007 in). The connecting rods are not twisted more than 0.38 mm (0.0015 in). Replace any bent or twisted connecting rods. Inspect the new connecting rods before using the new rods.
23. Inspect the connecting rod for damage to the bearing cap and bolt threads.
24. Measure the piston compression ring end gap. IMPORTANT: Fit each compression ring to the cylinder in which it will be used. Place the compression ring into the cylinder bore. Push the compression ring into the bottom of the cylinder bore to approximately 6.5 mm (0.25 in) above ring travel. The ring must be square to the cylinder wall. Use a feeler gage in order to measure the end gap. The first compression ring end gap must measure 0.18-0.39 mm (0.007-0.015 in), the second compression ring must measure 0.48-0.74 mm (0.019-0.029 in). Select another size ring set if the end gap exceeds specifications. If ring gap clearance is below specifications, increase the gap by carefully filing off excess material.
25. Inspect the connecting rod bearings for craters or pockets. Flattened sections on the connecting rod bearing halves may indicate fatigue.
26. Inspect the connecting rod bearings for excess scoring or discoloration.
27. Inspect the connecting rod bearings for dirt or debris imbedded into the connecting rod bearing halves.
28. Inspect the connecting rod bearings for improper seating indicated by bright, polished sections of the bearings.
29. Inspect the inside of the connecting rod bearing and the outside diameter of the connecting rod bearing journal for wear. This indicates high spots.

J 24086-C Piston Pin Remover/Installer Set

Assembly Procedure

1. Install fork insert J 24086-310 into fixture J 24086-10, which are part of J 24086-C .
2. Lubricate the piston pin with clean engine oil.
3. Assemble the piston, connecting rod and adapter J 24086-6A and install onto fixture J 24086-10, which are part of J 24086-C .
4. Adjust installation pin J 24086-9 to G-4.
5. Insert pin J 24086-9 through fixture J 24086-10, which are part of J 24086-C and to the piston pin.
6. Press pin J 24086-9 until it bottoms on fixture J 24086-10.
7. Using piston ring pliers, install the piston rings onto the piston. Install the oil control ring spacer into the bottom groove of the piston. Install the lower oil control ring. The oil control rings do not have a dimple or orientation mark and may be installed in either direction. Install the upper oil control ring. Install the middle compression ring with the dot facing up. Install the top compression ring in either direction. The ring has no orientation markings.

J 7872 Magnetic Base Dial Indicator Set. See Special Tools and Equipment .

1. Clean the camshaft with cleaning solvent.
2. Inspect the camshaft for the following conditions: Scored camshaft bearing journals (1) Damaged camshaft lobes (2) Damaged camshaft sprocket locator pins (3) Damaged threads (4) Damage to the camshaft reluctor tooth (5)
3. Measure the camshaft journals using a micrometer. If the camshaft journals are not within specifications, replace the camshaft.
4. Measure the camshaft runout using the J 7872 . See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) . Mount the camshaft in V-blocks between the centers. Use the J 7872 in order to measure the intermediate camshaft journal. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
5. Measure the camshaft lobe lift using the J 7872 . See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) . Lubricate the camshaft using GM P/N United States 12345501, GM P/N Canada 992704 or the equivalent. Set the camshaft on V-blocks. Use the J 7872 in order to measure the lobe lift. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
6. If the runout or lobe lift is not within specifications, replace the camshaft.

Timing Chain and Sprockets Cleaning and Inspection

1. Inspect the timing chain sprockets for teeth that are worn (1), broken (2), or chipped (3).
2. Inspect the timing chain for binding or stretching.
3. Inspect the timing chain dampener for excessive wear or cracks.
4. Replace the timing chain and sprockets as needed.

Valve Lifters Cleaning and Inspection

1. Clean the valve lifters in cleaning solvent.
2. Dry the valve lifters with compressed air.
3. Inspect the valve lifters for the following: Bent or broken clip (1) Worn push rod 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.
4. Inspect the valve lifter guides for the following: For cracks or damage Excessive wear in the lifter mounting bores

Valve Rocker Arm and Push Rods Cleaning and Inspection

1. Clean the valve rocker arms and push rods in cleaning solvent.
2. Dry the valve rocker arms and push rods with compressed air.
3. Inspect the valve rocker arms for the following conditions: Excessive wear at the valve contact or push rod socket area (1) A loose or damaged pin (2) A worn or damaged roller bearing (2) The roller should rotate freely with no binding or roughness. The bolt threads for damage
4. Inspect the push rods for the following conditions: Straightness using a straight edge (1) Excessive wear on the push rod ends (3) Clogging of the oil passage (2)

J 38606 Valve Spring Compressor. See Special Tools and Equipment .

1. Remove the fuel line bracket bolt and stud.
2. Remove the fuel line bracket.
3. Compress the valve springs using the J 38606 . See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
4. Remove the valve spring cap keys.
5. Remove the valve spring caps.
6. Remove the valve springs.
7. Remove the valves.
8. Remove the valve stem oil seals and spring seats as an assembly.

Cylinder Head Cleaning and Inspection

Tools Required

1. J 8089 Carbon Removing Brush. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
2. J 9666 Valve Spring Tester

1. Inspect the cylinder head gasket and the mating surfaces. Inspect for leaks, corrosion, and blowby.
2. If the gasket failed, determine the cause. The following conditions may cause gasket failure: Improper installation A loose or warped cylinder head Missing, off location, or not fully seated dowel pins Low torque on the cylinder head bolts Cylinder head bolts with the incorrect length A warped engine block surface Scratched surfaces Excessive intake manifold torque Cracked engine block threaded holes
3. Use the J 8089 in order to remove the carbon from the combustion chambers. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
4. Clean the following components: The gasket surfaces Do not use a motorized brush on any gasket sealing surface. Valve stems and heads on a buffing wheel The bolt hole threads Remove all dirt, debris, or threadlocking material from the bolt holes.
5. Inspect the cylinder head mating surfaces for flatness. Replace the cylinder head if it is outside of the specification limit.
6. Inspect the cylinder head for cracks.
7. Inspect the cylinder head deck for corrosion. Do not attempt to weld the cylinder head. If the cylinder head is damaged, replace the cylinder head.
8. Inspect the valve springs for squareness.
9. Use the J 9666 in order to measure the valve spring tension. Replace the spring if the spring tension is not within specification.

J 8520 Camshaft Lobe Lift Indicator Set. See Special Tools and Equipment .

Reaming/Grinding Procedure

1. Inspect the valves 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)
2. Inspect the valve face for the following conditions: Worn margin (4) No margin (1) Pitted surfaces (2) Burnt or eroded areas (3)
3. Inspect the valve seats for a loose fit in the cylinder head.
4. Inspect for excessive valve stem (1) to guide (2) clearance.
5. Use a dial indicator in order to measure the valve stem-to-guide clearance. Complete the following steps: Install the valve into the guide. Install the J 8520 onto the cylinder head. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) . Locate the dial indicator so that the movement of the valve stem from side to side, crosswise to the cylinder head, will cause a direct movement on the indicator stem. Ensure that the indicator stem contacts the side of the valve stem just above the valve guide. Drop the valve head about 2 mm (1/8 in) off the valve seat. Use light pressure and move the valve stem side to side in order to obtain a clearance reading. If the valve stem to guide clearance is not within specification, replace the valve and/or repair the guide in order to obtain the proper clearances.
6. Ream the valve guides for oversize valves if the clearance exceeds the specifications.
7. Ream the valve guide in order to obtain the proper specification.
8. Inspect the valves for excessive scoring.
9. Inspect the valve face. Replace the valve if the valve margin is not within specifications after grinding.
10. Reface pitted valves on a valve refacing machine in order to ensure the correct relationship between the head and the stem.
11. Recondition the valve seats after reaming the valve guide bores or installing the new valve guides.
12. The valve seats should be concentric to within 0.05 mm (0.031 in) total indicator reading.

J 38606 Valve Spring Compressor. See Special Tools and Equipment .

1. Lubricate the valve stem with clean engine oil.
2. Install the valves.
3. Lightly lap the reconditioned valves into the valve seat.
4. Install the valve stem oil seals.
5. Install the valve springs.
6. Install the valve spring caps.
7. Compress the valve springs using the J 38606 . See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
8. Install the valve spring cap keys. Hold the valves in place with grease, if necessary.
9. Release the valve springs.
10. Ensure that the valve locks are seated.
11. Measure valve spring installed height.
12. If the valve spring installed height is not within specifications install 0.25 mm (0.010 in) rocker arm shims as needed. If more than 2 shims are needed replace the cylinder head or valve.
13. Install the fuel line bracket.
14. Install the fuel line bracket bolt or stud. Tighten: Tighten the fuel line bracket bolt or stud to 50 N.m (37 lb ft).

Oil Pump Disassemble

1. Remove the oil pump driveshaft and oil pump driveshaft retainer.
2. Remove the oil pump screen, if necessary. The oil pump screen has a press fit into the oil pump cover.
3. Remove the oil pump cover bolts.
4. Remove the oil pump cover.
5. Remove the oil pump drive gear and the oil pump driven gear.
6. Matchmark the gear teeth for assembly.
7. Remove the following items: The oil pump pressure relief valve spring straight pin. The oil pump pressure relief spring. CAUTION: Refer to Cleaning Solvent Caution in Cautions and Notices. The oil pump pressure relief valve. If the valve is stuck, soak the pump housing in cleaning solvent.

Oil Pump Cleaning and Inspection

1. Clean all parts of sludge, oil, and varnish by soaking in cleaning solvent.
2. Inspect for foreign material and determine the source of the foreign material.
3. Inspect the pump housing and cover for the following conditions: Cracks or casting imperfections Scoring (3) Damaged threads
4. Do not attempt to repair the pump housing. Replace the pump housing.
5. Inspect the oil pump gears for the following conditions: Scoring (1) Excessive wear (2)
6. Inspect the idler shaft for looseness or scoring (4). If loose or damaged, replace the oil pump.
7. Inspect the drive gear shaft for looseness or scoring (5).
8. Inspect the pressure regulator valve for the following conditions: Scoring Sticking Burrs may be removed using a fine oil stone.
9. Inspect the pressure regulator valve spring for the following conditions: Loss of tension Bending
10. Inspect the suction pipe and screen assembly for the following conditions: Looseness If the suction pipe is loose, bent or has been removed, replace the pump body cover and suction pipe. Broken wire mesh or screen
11. Measure the oil pump gear lash. Install the gears, and measure in several places.
12. Measure the oil pump housing gear pocket (1, 2).
13. Measure the oil pump gears (1, 2).
14. Measure the oil pump gear side clearance.

Oil Pump Assemble

Tools Required

1. J 21882 Oil Suction Pipe Installer. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
2. J 22144 Oil Suction Pipe Installer. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .

1. Lubricate all the internal oil pump parts using engine oil during assembly.
2. Install the oil pump gears.
3. Install the oil pump cover.
4. Install the oil pump cover bolts. Tighten: Tighten the oil pump cover bolts to 10 N.m (89 lb in).
5. Install the pressure regulator valve.
6. Install the pressure regulator spring.
7. Install the cotter pin.
8. Apply sealer GM P/N 12346004, (Canadian P/N 10953480) or the equivalent to the new suction pipe.
9. Tap the new suction pipe into place using a plastic hammer. Use the J 21882 for 5/8 inch pipe or J 22144 for 3/4 inch pipe. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .

Engine Front Cover Cleaning and Inspection

1. Remove the crankshaft position sensor bolts from the engine front cover.
2. Remove the crankshaft position sensor.
3. Clean the engine front cover with cleaning solvent.
4. Inspect the engine front cover sealing surfaces for damage.
5. Inspect the engine front cover threaded holes.
6. Repair or replace the engine front cover as necessary.
7. Install the crankshaft position sensor to the engine front cover.
8. Install the crankshaft position sensor bolts. Apply threadlock GM P/N United States 12345382, GM P/N Canada 10953489 or the equivalent to the threads. Tighten: Tighten the crankshaft position sensor bolts to 10 N.m (89 lb in).

Valve Rocker Arm Cover Cleaning and Inspection

1. Remove all rubber grommets from the valve rocker arm covers.
2. Inspect the rubber grommets, if cracked or torn replace.
3. Clean the valve rocker arm covers with GM P/N 12346139 (Canadian P/N 88901247) or equivalent.
4. Dry the valve rocker arm covers with compressed air.
5. Inspect the valve rocker arm covers for damage and replace if necessary.
6. Install all rubber grommets into the valve rocker arm covers.

Oil Pan Cleaning and Inspection

1. Remove the oil level sensor bolt.
2. Remove the oil level sensor.
3. Clean the oil pan in solvent. Remove all sludge and debris from the bottom of the oil pan.
4. Inspect the oil pan sealing surfaces for damage. Replace the oil pan if necessary.
5. Install the oil level sensor.
6. Install the oil level sensor bolt. Tighten: Tighten the oil level sensor bolt to 10 N.m (89 lb in).

J 21882 Oil Suction Pipe Installer. See Special Tools and Equipment .

1. Remove the engine coolant temperature sensor.
2. Remove the intake manifold coolant pipe bolt, if required.
3. Remove the intake manifold coolant pipe, if required.
4. Clean the intake manifold gasket mating surfaces.
5. Clean the fuel injector bores.
6. Inspect the threaded holes for damage.
7. Inspect the intake manifold mating surfaces for damage. Repair or replace the intake manifold as necessary.
8. Apply sealant GM P/N 12345493 (Canadian P/N 10953488) to the end of a new intake manifold coolant pipe.
9. Install the intake manifold coolant pipe using the J 21882 . See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
10. Install the intake manifold coolant pipe bolt. Tighten: Tighten the intake manifold coolant pipe bolt to 10 N.m (89 lb in).
11. Apply sealant GM P/N 12346004 (Canadian P/N 10953480) or equivalent to the threads of the engine coolant temperature sensor.
12. Install the engine coolant temperature sensor. Tighten: Tighten the engine coolant temperature sensor to 23 N.m (17 lb ft).

Intake Manifold Cleaning and Inspection - Upper

1. Remove the accelerator control cable bracket bolts (1, 2) and the nut (3).
2. Remove the accelerator control cable bracket.
3. Remove the throttle body bolt and stud.
4. Remove the throttle body.
5. Remove the throttle body gasket.
6. Clean the intake manifold gasket surfaces.
7. Clean the intake manifold bolts and studs.
8. Inspect the intake manifold mating surfaces for nicks or cracks. Replace the intake manifold if damaged.
9. Install the throttle body gasket.
10. Install the throttle body.
11. Apply threadlock GM P/N 12345382 (Canadian P/N 10953489) to the threads.
12. Install the throttle body bolt and stud. Tighten: Tighten the throttle body bolt and stud to 25 N.m (18 lb ft).
13. Install the accelerator control cable bracket.
14. Install the accelerator control cable bracket bolts and nut. Tighten: Tighten the accelerator control cable bracket bolts in sequence (1, 2, 3) to 10 N.m (89 lb in).

Exhaust Manifold Cleaning and Inspection

1. Inspect the exhaust manifold mating surface for flatness.
2. Inspect the exhaust manifold for cracks or damage. Replace the exhaust manifold if necessary.

Water Pump Cleaning and Inspection

1. Remove all gasket material from the sealing surface.
2. Inspect the water pump impeller for damage.
3. Inspect the water pump shaft for looseness.
4. Replace the water pump if necessary.

Thread Repair

General purpose thread repair kits are available commercially.

1. Determine the size, the pitch, and the depth of the damaged thread.
2. Adjust the stop collars on the cutting tool as needed. Tap the stop collars to the required depth.
3. Drill out the damaged thread.
4. Remove the chips.
5. Apply clean engine oil to the top thread.
6. Use the tap in order to cut new thread.
7. Clean the thread.
8. Screw the thread insert onto the mandrel of the thread insert installer. Engage the tang of the thread insert onto the end of the mandrel.
9. Lubricate the thread insert with clean engine oil - except when installing in aluminum - and install the thread insert.
10. If the tang of the thread insert does not break off when backing out the thread insert installer, break off the tang using a drift punch.

Service Prior to Assembly

Dirt will cause premature wear of the rebuilt engine. Clean all of the components. Use the proper tools in order to measure components when inspecting for excessive wear. Repair or replace the components that are not within the manufacturers specification. When components are reinstalled into an engine, return the components to their original location, position, and direction. During assembly, lubricate all of the moving parts with clean engine oil or engine assembly lubricant unless otherwise specified. This will provide initial lubrication when the engine is first started.

J 45299 Engine Preluber. See Special Tools and Equipment .

Prelubing Procedure

1. Remove the engine oil filter, fill with clean engine oil.
2. Install the oil filter. Tighten: Tighten the oil filter to 30 N.m (22 lb ft).
3. Locate the oil pressure sensor on left side of engine and remove.
4. Install the 1/4 inch adapter P/N 509373.
5. Install the flexible hose to the adapter and open the valve.
6. Pump the handle on J 45299 to flow a minimum of 1-2 quarts of engine oil. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) . Observe the flow of engine oil through the flexible hose and into the engine assembly.
7. Close the valve and remove the flexible hose and adapter from the engine.
8. Install the oil pressure sensor. Tighten: Tighten the oil pressure sensor to 16 N.m (12 lb ft).
9. Top off the engine oil to the proper level.

J 33049 Camshaft Bearing Remover/Installer. See Special Tools and Equipment .

1. Assemble the J 33049 according to the manufacturer's instructions. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
2. Install the camshaft bearings in the following order: Index the camshaft bearing oil holes with the engine block oil passages. Place the bearing on the J 33049 . See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) . Install the third camshaft bearing. Install the second camshaft bearing. Install the outer camshaft bearings.
3. Apply sealer GM P/N United States 12377901, GM P/N Canada 10953504 or the equivalent to the camshaft rear bearing hole plug.
4. Install the camshaft rear bearing hole plug.

J 45059 Angle Meter. See Special Tools and Equipment .

1. Dip the crankshaft bearing cap bolts in clean engine oil.
2. Place the crankshaft bearing inserts into the crankshaft bearing cap and into the engine block.
3. Lubricate the crankshaft main bearing surface with clean engine oil.
4. Install the crankshaft.
5. Install the crankshaft main bearing caps. Apply a small amount of sealer GM P/N 1052942 (Canadian P/N 10953466) to the rear of the #4 crankshaft main bearing cap sealing surface.
6. Install the crankshaft main bearing cap bolts. Tighten: Use the J 45059 in order to tighten the crankshaft main bearing cap bolts to 50 N. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .m (37 lb ft) plus 77 degrees.
7. Measure the crankshaft end play. Thrust the crankshaft forward or rearward. Insert a feeler gage between the number 3 crankshaft bearing and the bearing surface of the crankshaft and measure the bearing clearance. The proper crankshaft end play clearance is 0.06-0.21 mm (0.002-0.008 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.
8. Install the crankshaft position sensor into the side of the engine block.
9. Apply threadlock GM P/N 12345382 (Canadian P/N 10953489) or the equivalent to the crankshaft position sensor stud threads.
10. Install the crankshaft position sensor stud. Tighten: Tighten the crankshaft position sensor stud to 11 N.m (98 lb in).
11. Install the crankshaft position sensor shield and nut. Tighten: Tighten the crankshaft position sensor shield nut to 11 N.m (98 lb in).

J 34686 Rear Main Seal Installer. See Special Tools and Equipment .

1. Carefully remove the protection sleeve from the new crankshaft rear oil seal.
2. Install the crankshaft rear oil seal onto the J 34686 by sliding the crankshaft rear oil seal over the mandrel using a twisting motion until the back of the crankshaft rear oil seal bottoms squarely against the collar of the tool. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
3. Perform the following steps in order to install the crankshaft rear oil seal: Align the dowel pin of the J 34686 with the dowel pin in the crankshaft. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) . Attach the J 34686 to the crankshaft by hand, or tighten attaching screws to 5 N. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .m (45 lb in). Turn the T-handle of the J 34686 in order to engage allow the collar to push the seal into the bore. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) . Turn the handle until the collar is tight against the engine block. Ensure that the seal is seated properly. Loosen the T-handle until the T-handle comes to a stop. Remove the attaching screws.

Piston, Connecting Rod, and Bearing Installation

Tools Required

1. J 5239 Connecting Rod Bolt Guide. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
2. J 8037 Piston Ring Compressor. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
3. J 45059 Angle Meter. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .

1. Lightly lubricate the following components with clean engine oil: The piston The piston rings The cylinder bore The bearing surfaces
2. Stagger the oil control ring end gaps a minimum of 90 degrees.
3. Stagger the compression ring end gaps a minimum of 25 mm (1.0 in).
4. Install the J 8037 onto the piston and compress the piston rings. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
5. Install the J 5239 on the connecting rod bolts. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
6. Install the piston and connecting rod assembly into the proper cylinder bore.
7. Hold the piston ring compressor firmly against the engine block. Using a wooden hammer handle, lightly tap the top of the piston until all of the piston rings enter the cylinder bore.
8. Guide the connecting rod end onto the crankshaft journal.
9. Install the bearing, cap, and nuts. Tighten: Tighten the connecting rod bearing cap nuts a first pass to 20 N.m (15 lb ft). Tighten the connecting rod bearing cap nuts a second pass to 75 degrees using the J 45059 . See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
10. With the pistons and connecting rods installed, use a soft faced mallet and lightly tap each connecting rod assembly parallel to the crankpin to make sure that the rods have side clearance.
11. Measure the connecting rod side clearance using a feeler gage or dial indicator. Connecting rod side clearance should be within 0.18-0.44 mm (0.007-0.017 in).

Camshaft Installation

1. Coat the camshaft journals with clean engine oil.
2. Coat the camshaft lobes with prelube GM P/N United States 12345501, GM P/N Canada 992704 or the equivalent.
3. Install the camshaft using the following procedure: Install a large screwdriver into the camshaft bolt hole for support. Do not damage the threads. Rotate the camshaft while installing the camshaft into the camshaft bearings.
4. Install the camshaft thrust plate.
5. Install the camshaft thrust plate screws. Tighten: Tighten the camshaft thrust plate screws to 10 N.m (89 lb in).
6. Install the camshaft position sensor.
7. Install the camshaft position sensor bolt. Tighten: Tighten the camshaft position sensor bolt to 10 N.m (89 lb in).

Timing Chain and Sprockets Installation

1. Install the crankshaft sprocket.
2. Apply prelube GM P/N United States 12345501, GM P/N Canada 992704 or the equivalent to the crankshaft sprocket thrust surface.
3. Install the timing chain dampener.
4. Install the timing chain dampener bolts. Tighten: Tighten the timing chain dampener bolt to 21 N.m (15 lb ft).
5. Align the crankshaft timing mark (2) to the timing mark on the bottom of the timing chain dampener (1).
6. Hold the camshaft sprocket with the timing chain hanging down and install the timing chain to the crankshaft gear.
7. Align the timing mark on the camshaft gear (4) with the timing mark on top of the timing chain dampener (3).
8. Align the dowel in the camshaft with the dowel hole in the camshaft sprocket.
9. Draw the camshaft sprocket onto the camshaft using the mounting bolt.
10. Coat the crankshaft and camshaft sprocket with engine oil. Tighten: Tighten the bolt to 140 N.m (103 lb ft).

Engine Front Cover Installation

1. Install the engine front cover gasket.
2. Apply sealer GM P/N 12346004, (Canadian P/N 10953480) or equivalent to both sides of the lower tabs of the engine front cover gasket, and the engine front cover bolts. Apply the sealer no less than 5.0 mm (0.20 in) wide.
3. Install the engine front cover.
4. Install the engine front cover bolts (2). Tighten: Tighten the engine front cover bolts (2) to 55 N.m (41 lb ft).
5. Install the engine front cover bolts (3). Tighten: Tighten the engine front cover bolts (3) to 55 N.m (41 lb ft).
6. Install the engine front cover bolts (1). Tighten: Tighten the engine front cover bolts (1) to 27 N.m (20 lb ft).
7. Install the crankshaft position sensor wiring bracket.
8. Install the crankshaft position sensor wiring bracket bolt. Tighten: Tighten the crankshaft position sensor wiring bracket bolt to 27 N.m (20 lb ft).

J 35468 Cover Aligner and Seal Installer. See Special Tools and Equipment .

1. Align the J 35468 and the crankshaft front oil seal with the engine front cover and crankshaft. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
2. Install the crankshaft front oil seal using the J 35468 and a suitable tool. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .

Oil Pump Drive Installation

1. Apply prelube GM P/N United States 12345501, GM P/N Canada 992704 or the equivalent to the oil pump drive gear.
2. Apply engine oil to the oil pump drive gear assembly for ease of assembly.
3. Install the oil pump drive gear assembly.
4. Install the oil pump drive gear clamp.
5. Install the oil pump drive gear clamp bolt. Tighten: Tighten the oil pump drive gear clamp bolt to 36 N.m (27 lb ft).

Oil Pump Installation

1. Install the crankshaft oil deflector.
2. Install the crankshaft oil deflector nuts. Tighten: Tighten the crankshaft oil deflector nuts to 25 N.m (18 lb ft).
3. Install the oil pump.
4. Position the oil pump onto the pins.
5. Install the oil pump bolt attaching the oil pump to the rear crankshaft bearing cap. Tighten: Tighten the oil pump bolt to 41 N.m (30 lb ft).

Oil Pan Installation

1. Apply sealer GM P/N 12346141 (Canadian P/N 10953433) or the equivalent to both sides of the crankshaft rear main bearing cap (1). Press sealer into gap using a putty knife.
2. Install the oil pan gasket.
3. Install the oil pan.
4. Install the oil pan bolts. Tighten: Tighten the oil pan bolts to 25 N.m (18 lb ft).
5. Install the oil pan side bolts. Tighten: Tighten the oil pan side bolts to 50 N.m (37 lb ft).

J 45059 Angle Meter. See Special Tools and Equipment .

1. Install the cylinder head locator dowel pins, if necessary.
2. Inspect the cylinder head locator dowel pins for proper installation.
3. Install the cylinder head gasket.
4. Install the cylinder head.
5. Install the new cylinder head bolts. Tighten: Tighten the cylinder head bolts a first pass in sequence to 60 N.m (44 lb ft). Tighten the cylinder head bolts a final pass in sequence to 95 degrees using the J 45059 . See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .

J 45059 Angle Meter. See Special Tools and Equipment .

1. Install the cylinder head locator dowel pins, if necessary.
2. Inspect the cylinder head locator dowel pins for proper installation.
3. Install the cylinder head gasket.
4. Install the cylinder head.
5. Install the new cylinder head bolts. Tighten: Tighten the cylinder head bolts a first pass in sequence to 60 N.m (44 lb ft). Tighten the cylinder head bolts a final pass in sequence to 95 degrees using the J 45059 . See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .

Water Pump Installation

1. Install the water pump gasket.
2. Install the water pump.
3. Install the water pump bolts. Tighten: Tighten the water pump bolts to 11 N.m (98 lb in).
4. Install the water pump pulley.
5. Install the water pump pulley bolts. Tighten: Tighten the water pump pulley bolts to 25 N.m (18 lb ft).

Valve Lifter Installation

1. Coat the valve lifters using prelube GM P/N 12345501 (Canadian P/N 992704) or the equivalent.
2. Install the valve lifters in their original locations.
3. Apply threadlock GM P/N 12345382 (Canadian P/N 10953489) or the equivalent to the threads.
4. Install the valve lifter guides and guide bolts. Tighten: Tighten the valve lifter guide bolts to 10 N.m (89 lb in).

Valve Rocker Arm and Push Rod Installation

1. Install the lower intake manifold gaskets.
2. Coat the ends of the push rods using prelube GM P/N 12345501 (Canadian P/N 992704) or the equivalent.
3. Install the push rods in their original location.
4. Coat the rocker arm friction surfaces using prelube GM P/N 12345501 (Canadian P/N 992704) or the equivalent.
5. Install the valve rocker arms in their original positions.
6. Install the valve rocker arm bolts. Tighten: Tighten the valve rocker arm bolts to 32 N.m (24 lb ft).

Intake Manifold Installation - Lower

1. Install the lower intake manifold gaskets.
2. With gaskets in place apply a small drop 8-10 mm (0.31-0.39 in) of RTV sealer GM P/N 12346141 (Canadian P/N 10953433) or equivalent to the 4 corners of the intake manifold to block joint (1).
3. Connect the 2 small drops with a bead of RTV sealer that is between 8-10 mm (0.31-0.39 in) wide and 3.0-5.0 mm (0.12-0.20 in) thick (2).
4. Install the lower intake manifold.
5. Install the lower intake manifold bolts. Tighten: Tighten the lower intake manifold bolts (1, 2, 3, 4) in sequence to 7 N.m (62 lb in) on the first pass. Tighten the lower intake manifold bolts (5, 6, 7, 8) in sequence to 13 N.m (115 lb in) on the first pass. Tighten the lower intake manifold bolts (1, 2, 3, 4) in sequence to 13 N.m (115 lb in) on the final pass. Tighten the lower intake manifold bolts (5, 6, 7, 8) in sequence to 25 N.m (18 lb ft) on the final pass.
6. Install the heater inlet pipe.
7. Install the heater inlet pipe nut. Tighten: Tighten the heater inlet pipe nut to 25 N.m (18 lb ft).
8. Install the fuel injector rail assembly. Install the fuel injector O-rings using GM P/N 12345616, (Canadian P/N 993182) or equivalent. Install the injector nozzles into the lower intake manifold injector bores. Press on the injector rail using the palms of both hands until the injectors are fully seated.
9. Install the fuel injector rail bolts. Tighten: Tighten the fuel injector rail bolts to 10 N.m (89 lb in).
10. Install the fuel feed and return pipe retaining clip.
11. Install the fuel feed and return pipe retaining clip bolt. Tighten: Tighten the fuel feed and return pipe retaining clip bolt to 8 N.m (71 lb in).

Intake Manifold Installation - Upper

1. Install the upper intake manifold gaskets.
2. Install the upper intake manifold.
3. Install the upper intake manifold bolts and studs. Apply threadlock GM P/N 12345382 (Canadian P/N 10953489) to the threads. Tighten: Tighten the upper intake manifold bolts and studs to 25 N.m (18 lb ft).
4. Install the exhaust gas recirculation (EGR) valve pipe and bolt to the EGR. Tighten: Tighten the EGR valve pipe bolt to 25 N.m (18 lb ft).
5. Install the EGR valve.
6. Install the EGR valve bolts. Tighten: Tighten the EGR valve bolts to 25 N.m (18 lb ft).
7. Install the manifold absolute pressure (MAP) sensor bracket and bolt. Tighten: Tighten the MAP sensor bracket bolt to 25 N.m (18 lb ft).
8. Install the MAP sensor (1, 2).
9. Install the MAP sensor bolts (1). Tighten: Tighten the MAP sensor bolts to 5 N.m (44 lb in).
10. Install the MAP sensor electrical connector.
11. Install the vacuum lines to the upper intake manifold.
12. Install the throttle cable bracket.
13. Install the throttle cable bracket bolts. Tighten: Tighten the throttle cable bracket bolts to 13 N.m (115 lb in).

Valve Rocker Arm Cover Installation - Right

1. Install a NEW gasket to the valve rocker arm cover. Ensure that the gasket is properly seated in the groove of the valve rocker arm cover.
2. Apply sealant GM P/N 12378521, (Canadian P/N 88901148) or the equivalent to the joint surfaces (1) where the cylinder head and intake manifold meet.
3. Install the valve rocker arm cover.
4. Install the valve rocker arm cover bolts. Tighten: Tighten the valve rocker arm cover bolts to 10 N.m (89 lb in).
5. Install the vacuum lines from the upper intake manifold.
6. Install the ignition coil studs. Tighten: Tighten the ignition coil studs to 25 N.m (18 lb ft).
7. Install the electronic ignition control module.
8. Install the electronic ignition control module nuts and bolts. Tighten: Tighten the electronic ignition control module nuts and bolts to 25 N.m (18 lb ft).

Valve Rocker Arm Cover Installation - Left

1. Install a NEW gasket to the valve rocker arm cover. Ensure that the gasket is properly seated in the groove of the valve rocker arm cover.
2. Apply sealant GM P/N 12378521, (Canadian P/N 88901148) or the equivalent to the joint surfaces (1) where the cylinder head and intake manifold meet.
3. Install the valve rocker arm cover.
4. Install the valve rocker arm cover bolts. Tighten: Tighten the valve rocker arm cover bolts to 10 N.m (89 lb in).

Water Outlet and Thermostat Installation

1. Install the thermostat.
2. Install the water outlet.
3. Install the water outlet bolts. Tighten: Tighten the water outlet bolts to 25 N.m (18 lb ft).

Exhaust Manifold Installation - Left

1. Install the exhaust manifold studs. Tighten: Tighten the exhaust manifold studs to 18 N.m (13 lb ft).
2. Install the exhaust manifold gasket.
3. Install the exhaust manifold.
4. Install the exhaust manifold nuts. Tighten: Tighten the exhaust manifold nuts working from the center outward to 16 N.m (12 lb ft).
5. Install the left side spark plugs. Tighten: Tighten the spark plugs to 20 N.m (15 lb ft) when installing spark plugs into a new cylinder head. Tighten the spark plugs to 15 N.m (13 lb ft) when re-installing after initial installation.
6. Install the exhaust manifold heat shield.
7. Install the exhaust manifold heat shield bolts. Tighten: Tighten the exhaust manifold heat shield bolts to 10 N.m (89 lb in).

Exhaust Manifold Installation - Right

1. Install the exhaust manifold studs. Tighten: Tighten the exhaust manifold studs to 18 N.m (13 lb ft).
2. Install the exhaust manifold gasket.
3. Install the exhaust manifold.
4. Install the exhaust manifold nuts. Tighten: Tighten the exhaust manifold nuts working from the center out to 16 N.m (12 lb ft).
5. Install the right side spark plugs. Tighten: Tighten the spark plugs to 20 N.m (15 lb ft) when installing spark plugs into a new cylinder head. Tighten the spark plugs to 15 N.m (13 lb ft) when re-installing after initial installation.
6. Install the spark plug wires on to the spark plugs.
7. Install the lower exhaust manifold heat shield.
8. Install the upper exhaust manifold heat shield.
9. Install the exhaust manifold heat shield bolts. Tighten: Tighten the exhaust manifold heat shield bolts to 10 N.m (89 lb in).
10. Coat the threads of the heated oxygen sensor with anti seize compound.
11. Install the heated oxygen sensor. Tighten: Tighten the heated oxygen sensor to 42 N.m (31 lb ft).
12. Install the spark plug wires.

Oil Filter Adapter Installation

1. Install the oil filter bypass valve.
2. Install the oil filter fitting, if necessary. Tighten: Tighten the oil filter fitting to 39 N.m (29 lb ft).
3. Install the oil filter bypass valve plug. Apply sealer GM P/N 12345739 (Canadian P/N 10953541) or the equivalent to the threads. Tighten: Tighten the oil filter bypass valve plug to 19 N.m (14 lb ft).
4. Install the oil filter. Tighten: Tighten the oil filter to 30 N.m (22 lb ft).

Oil Level Indicator and Tube Installation

1. Install the oil level indicator and oil level indicator tube.
2. Install the oil level indicator tube bolt. Tighten: Tighten the oil level indicator tube bolt to 25 N.m (18 lb ft).
3. Install the thermostat bypass pipe (3).
4. Install the thermostat bypass pipe (3) and hose clamp (5).
5. Install the thermostat bypass pipe to engine front cover bolt (4). Tighten: Tighten the thermostat bypass pipe to engine front cover bolt to 11 N.m (98 lb in).
6. Install the thermostat bypass pipe (3) to throttle body hose clamps (1).
7. Install the thermostat bypass pipe to throttle body nut (2). Tighten: Tighten the thermostat bypass pipe to throttle body nut to 25 N.m (18 lb ft).

Engine Lift Bracket and Generator Bracket Installation

1. Install the front engine lift hook.
2. Install the generator bracket.
3. Install the generator bracket bolts. Tighten: Tighten the generator bracket bolts in sequence (1, 2, 3) to 50 N.m (37 lb ft).

Engine Mount Strut and Engine Lift Bracket Installation

1. Install the engine mount strut and lift bracket.
2. Install the engine mount strut and lift bracket bolts. Tighten: Tighten the engine mount strut and lift bracket bolts to 70 N.m (52 lb ft).

Engine Mount Strut and Air Conditioning Compressor Bracket Installation

1. Install the engine mount strut and A/C Compressor bracket.
2. Install the engine mount strut and A/C Compressor bracket bolts. Tighten: Tighten the engine mount strut and lift bracket bolts to 50 N.m (37 lb ft).

Drive Belt Tensioner Installation

1. Install the drive belt tensioner.
2. Install the drive belt tensioner bolt. Tighten: Tighten the drive belt tensioner bolt to 50 N.m (37 lb ft).

Engine Flywheel Installation

1. Install the flywheel.
2. Install the flywheel bolts. Tighten: Tighten the flywheel bolts to 70 N.m (52 lb ft).

Crankshaft Balancer Installation

Tools Required

1. J 29113 Crankshaft Balancer Installer. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
2. J 45059 Angle Meter. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .

1. Apply sealer GM P/N 12346141, (Canadian P/N 10953433) or the equivalent to the keyway of the crankshaft balancer.
2. Place the crankshaft balancer into position over the key in the crankshaft.
3. Install the J 29113 onto the crankshaft. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
4. Pull the crankshaft balancer into position.
5. Remove the J 29113 from the crankshaft balancer. See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
6. Install the crankshaft balancer washer and bolt. Tighten: Tighten the crankshaft balancer bolt a first pass to 70 N.m (52 lb ft). Tighten the crankshaft balancer bolt a second pass to 85 degrees using the J 45059 . See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .

J 41131 Engine Tilter Strap. See Special Tools and Equipment .

Rotation Procedure

1. Remove the throttle body air inlet duct. Refer to «Air Cleaner Intake Duct Replacement»(/buick/rendezvous/i-2001-2007/remont/testing-diagnostics/#engine-controls-34l-introduction-service-replacement) in Engine Controls - 3.4L.
2. Set the park brake.
3. Shift the transaxle into Neutral.
4. Remove the engine mount strut bolts. Swing the engine mount struts aside.
5. Install the J 41131 . See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .
6. Pull on the engine in order to rotate the engine forward.
7. Tighten the J 41131 . See «Special Tools and Equipment»(/buick/rendezvous/i-2001-2007/remont/mechanical/#engine-mechanical-34l-la1) .

Scheme 7

A crankcase ventilation system is used to consume crankcase vapors in the combustion process instead of venting them to atmosphere. Fresh air from the throttle body is supplied to the crankcase, mixed with blow by gases and then passed through a PCV valve into the intake manifold.

Scheme 8

The primary control is through the positive crankcase ventilation (PCV) valve which meters the flow at a rate depending on inlet vacuum. To maintain idle quality, the PCV valve restricts the flow when inlet 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 into the throttle body to be consumed by normal combustion.

Results of Incorrect Operation

A plugged valve may cause the following conditions

1. Rough idle
2. Stalling or slow idle speed
3. Oil leaks
4. Sludge in engine

A leaking valve would cause

1. Rough idle
2. Stalling
3. High idle speed

Functional Check of PCV valve

If an engine is idling rough, check for a clogged PCV valve. Replace if required. Use the following procedure

1. Remove PCV valve from intake manifold.
2. Shake valve and listen for the rattle of needle inside the valve.
3. If valve does not rattle, replace valve.

With this system, any blow-by in excess of the system capacity (from a badly worn engine, sustained heavy load, etc.) is exhausted into the intake manifold and is drawn into the engine.

Proper operation of the crankcase ventilation system is dependent upon a sealed engine. If oil sludging or dilution is noted, and the crankcase ventilation system is functioning properly, check engine for possible cause and correct to ensure that system will function as intended.

Drive Belt System Description

The drive belt system consists of the following components

1. The drive belt
2. The drive belt tensioner
3. The drive belt idler pulley
4. The crankshaft balancer pulley
5. The accessory drive component mounting brackets
6. 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 one belt or two belts. The drive belt is thin so that it can bend backwards and has several ribs to match the grooves in the pulleys. There also may be a V-belt style belt used to drive certain accessory drive components. 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.

Engine Component Description

The cylinder block is made of cast alloy iron. The cylinder block has 6 cylinders that are arranged in a V shape. There are 3 cylinders in each bank. The cylinder banks are set at a 60 degree angle from each other.

Starting from the front of the engine, the left bank cylinders are 1, 3, 5. The right bank cylinders are 2, 4, 6.

Four main bearings support the crankshaft. The crankshaft is retained by the bearing caps. The bearing caps are machined with the block for proper alignment and clearances. The main bearing caps are drilled and tapped for the structural oil pan side bolts.

The aluminum cylinder heads have individual intake and exhaust ports for each cylinder. The valve guides are pressed in. The roller rocker arms are located on a pedestal in a slot in the cylinder head. The roller rocker arms are retained on individual threaded bolts.

The crankshaft is cast nodular iron with deep rolled fillets on all 6 crankpins and all 4 main journals. Four steel-backed aluminum bearings are used. The #3 bearing is the end-thrust bearing.

The camshaft is made from a new metal composite design. The camshaft profile is a hydraulic roller design. The camshaft is supported by 4 journals. The camshaft includes an oil pump drive gear.

The pistons are cast aluminum using 2 compression rings and 1 oil control ring. The piston pin is offset 0.8 mm (0.031 in) towards the major thrust side. This placement allows for a gradual change in thrust pressure against the cylinder wall as the piston travels its path. The pins are chromium steel. The pins have a floating fit in the pistons. The pins are retained in the connecting rods by a press fit.

The connecting rods are made of forged steel. Full pressure lubrication is directed to the connecting rods by drilled oil passages from the adjacent main bearing journal.

A roller rocker type valve train is used. Motion is transmitted from the camshaft through the hydraulic roller lifter and from the pushrod to the roller rocker arm. The rocker arm pivots on the needle roller bearings. The rocker arm transmits the camshaft motion to the valve. The rocker arm pedestal is located in a slot in the cylinder head. The rocker arm is retained in the cylinder head by a bolt. The pushrod is located by the rocker arm.

The intake manifold is a 2-piece cast aluminum unit. The intake manifold centrally supports a fuel rail with 6 fuel injectors.

The exhaust manifolds are cast nodular iron.

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 one or more of the following items

1. A component comparison from the previous year
2. Fastener changes
3. Torque values and/or fastener tightening strategies
4. Changed engine specifications
5. New sealants and/or adhesives
6. Disassembly and assembly procedure revisions
7. Engine mechanical diagnostic procedure revisions
8. New special tools required

Component Comparison

The MAP sensor and bracket have been revised.

The engine oil cooler has been deleted.

Fastener Changes

No fastener changes for 2004.

Torque Values and/or Fastener Tightening Strategies

Lower intake manifold strategy is now

1. Center bolts: First Pass 7 N.m (62 lb in) Final Pass 13 N.m (115 lb in)
2. Corner bolts: First Pass 13 N.m (115 lb in) Final Pass 25 N.m (18 lb ft)

Changed Engine Specifications

A new Engine Mechanical Specifications chart has been implemented into the 2004 service manual.

New Sealants and/or Adhesives

Engine sealers have been revised.

Disassembly and Assembly Procedure Revisions

No Revisions for 2004.

Engine Mechanical Diagnostic Procedure Revisions

No Revisions for 2004.

New Special Tools Required

J 45059 Angle Meter has been applied to 2004 books.

Scheme 9

Full pressure lubrication, through a full flow oil filter, is furnished by a gear type oil pump. The oil is drawn up through the pickup screen and the tube. The oil passes through the pump to the oil filter.

The oil filter is a full flow paper element unit. An oil filter bypass is used in order to ensure oil supply during the following conditions

1. On a cold start
2. If the filter is plugged
3. If the filter develops excessive pressure drop

The bypass is designed to open at 69-83 kPa (10-12 psi).

A priority oil delivery system supplies oil first to the crankshaft journals. The oil from the crankshaft main bearings is supplied to the connecting rod bearings by intersecting the passages drilled in the crankshaft. The passages supply the oil to the crankshaft main bearings and the camshaft bearings through the intersecting vertical drilled holes. The oil passages from the camshaft journals supply oil to the hydraulic lifters.

The hydraulic lifters pump oil up through the pushrods to the rocker arms. The cast dams in the crankcase casting direct the oil that drains back from the rocker arms in order to supply the camshaft lobes. The camshaft chain drive is lubricated by indirect oil splash.

Scheme 10

Scheme 11

Cleanliness and Care

An automobile engine is a combination of many of the following surfaces

1. Machined
2. Honed
3. Polished
4. Lapped

The tolerances of these surfaces are measured in the ten-thousandths of an inch. When you service any internal engine part, cleanliness and care are important. Apply a liberal coating of engine oil to the friction areas during assembly in order to protect and lubricate the surfaces on initial operation. Throughout this section, practice proper cleaning and protection procedures to the machined surfaces and to the friction areas.

Note. Engine damage may result if an abrasive paper, pad, or motorized wire brush is used to clean any engine gasket surfaces.

Whenever you remove the valve train components, keep the components in order. Follow this procedure in order to install the components in the same locations and with the same mating surfaces as when removed.

Disconnect the negative battery cables before you perform any major work on the engine. For more information on the disconnection of the battery, refer to Engine Electrical.

Separating Parts

In addition to the room temperature vulcanizing (RTV) sealant's sealing capabilities, the RTV sealants may form an adhesive bond between the components. This may make the components difficult to remove or to separate. If possible, bump the components sideways rather than using prying tools in order to remove the components. This technique prevents damage when the bonding strength of the RTV sealant is stronger than the component itself. Perform bumping at the bends or at the reinforced areas in order to prevent part distortion.

Replacing Engine Gaskets

1. Do not reuse any gasket unless otherwise specified. Reusable gaskets will be identified in the service procedure. Do not apply sealant to any gasket or sealing surface unless called out in the service procedure.
2. Use a rubber mallet in order to separate components. Bump the part sideways in order to loosen the components. Perform the bumping at the bends or at the reinforced areas in order to prevent the distortion of components.
3. Remove all of the gasket and the sealing material from the component using a plastic or a wood scraper. Do not gouge or scrape the sealing surfaces.
4. When assembling components, use only the sealant specified in the service procedure. Ensure that the sealing surfaces are clean and free of debris or oil. When applying sealant to a component, apply a bead size as specified in the service procedure.
5. Tighten the bolts to the specifications.

Use of Room Temperature Vulcanizing (RTV) and Anaerobic Sealer

The following 2 types of sealer are commonly used in engines

1. The RTV sealer
2. The anaerobic gasket eliminator sealer

Follow the service procedure instructions. Use the correct sealer in the proper place in order to prevent oil leaks. Do not interchange the 2 types of sealers. Use the sealer recommended in the service procedure.

Applying RTV Sealer

1. Do not use the room temperature vulcanizing (RTV) sealant in areas where extreme temperatures are expected. These areas include the following locations: The exhaust manifold The head gasket The other surfaces where gasket eliminator is specified
2. Use a rubber mallet in order to separate the components sealed with RTV sealant. Bump the part sideways in order to shear the RTV sealer. Perform the bumping at the bends or the reinforced areas in order to prevent distortion of the components. The RTV sealant is weaker in shear (lateral) strength than in tensile (vertical) strength.
3. Do not use the following items in order to clean the gasket surfaces: Abrasive pads Sand Paper Power tools

These methods of cleaning may damage the part.

Abrasive pads also produce a fine grit that the oil filter cannot remove from the oil. This grit is abrasive and may cause internal engine damage.

1. Remove all of the gasket material from the component using a plastic or a wood scraper. Use Loctite® brand gasket remover P/N 4MA or the equivalent. Follow all of the safety recommendations and the directions that are on the container. IMPORTANT: Do not allow the sealer to enter the blind threaded holes. The sealer may cause the following conditions: Prevent you from properly seating the bolt Cause damage when you tighten the bolt
2. Apply the RTV sealant to a clean surface. Use a bead size as specified in the procedure. Apply the bead to the inside of any bolt holes.
3. Assemble the components while the RTV sealant is still wet (within 3 minutes). Do not wait for the RTV sealant to skin over.
4. Tighten the bolts to specifications.

Applying Anaerobic Sealer

The anaerobic gasket eliminator hardens in the absence of air. This type of sealer is used where 2 rigid parts (such as castings) are assembled together. When 2 rigid parts are disassembled and no sealer or gasket is readily noticeable, the parts were probably assembled using a gasket eliminator.

Do not use the following items in order to clean the gasket surfaces

1. Abrasive pads
2. Sand paper
3. Power tools

These methods of cleaning may damage the part.

Abrasive pads also produce a fine grit that the oil filter cannot remove from the oil. This grit is abrasive and may cause internal engine damage.

1. Remove all of the gasket material from the component using a plastic or a wood scraper. Use Loctite® brand gasket remover P/N 4MA or the equivalent. Follow all of the safety recommendations and the directions that are on the container.
2. Apply a continuous bead of the gasket eliminator to 1 flange. Clean and dry any surfaces that you will reseal.
3. Do not allow the sealer to enter the blind threaded holes. The sealer may cause the following conditions: Prevent you from properly seating the bolt Cause damage when you tighten the bolt
4. Spread the sealer evenly in order to get a uniform coating on the sealing surface.
5. Tighten the bolts to the specifications.
6. Remove the excess sealer from the outside of the joint.

Tools and Equipment

Work in a clean and well-lit area. Have the following components available before you begin to work

1. A suitable parts cleaning tank
2. A compressed air supply
3. Trays, in order to keep the parts and the fasteners organized
4. An adequate set of hand tools

An approved engine repair stand will prevent personal injury or damage to the engine components. The special tools are designed in order to quickly and safely accomplish the operations for which the tools are intended. Using the tools will minimize possible damage to the engine components. Precision measuring tools are required for the inspection of certain critical components. Torque wrenches are needed for the correct assembly of various parts.

Special Tools

Special Tools Illustration Tool Number/Description J 5239 Connecting Rod Bolt Guide J 7872 Magnetic Base Dial Indicator Set J 8001 Dial Indicator Set J 8037 Piston Ring Compressor J 8087 Cylinder Bore Gage J 8089 Carbon Removing Brush J 8520 Camshaft Lobe Lift Indicator Set J 9666 Valve Spring Tester J 21882 Oil Suction Pipe Installer J 22144 Oil Suction Pipe Installer J 22794 Spark Plug Port Adapter J 24086-C Piston Pin Remover and Installer Set J 24270 Ridge Reamer J 24420-C Harmonic Balancer Puller J 25087-C Oil Pressure Tester and Pump Primer J 28428-E High Intensity Black Light Kit J 28467-B Universal Engine Support Fixture J 28467-6A Bracket Assembly J 28467-7A Bolt Hook J 28467-34 Lift Hook Wing Nut Washer J 28467-500 Engine Support Fixture J 29113 Crankshaft Balancer Installer J 33049 Camshaft Bearing Remover/Installer J 34686 Rear Main Seal Installer J 35468 Crankshaft Front Oil Seal Installer J 35667-A Cylinder Head Leakdown Tester J 38606 Valve Spring Compressor J 39505 Torque Wrench Adapter J 41131 Engine Tilt Strap J 45057 Engine Support Bar Assembly J 45057-2 Lower Engine Support Bar J 45059 Angle Meter J 45299 Engine Preluber

Scheme 12

Scheme 13

Scheme 14

Scheme 15

Scheme 16

Scheme 17

Scheme 18

Scheme 19

Scheme 20

Scheme 21

Scheme 22

Scheme 23

Scheme 24

Scheme 25

Scheme 26

Scheme 27

Scheme 28

Scheme 29

Scheme 30

Scheme 31

Scheme 32

Scheme 33

Scheme 34

Scheme 35

Scheme 36

Scheme 37

Scheme 38

Scheme 39

Scheme 40

Scheme 41

See also:
• Diagnostic System Check - Engine Controls
• Strategy Based Diagnosis
• Checking Aftermarket Accessories
• Diagnostic Starting Point - Engine Cooling
• Spark Plug Inspection
• Electronic Ignition (EI) System Description
• Electrical Center Identification Views
• Spark Plug Replacement
• Lifting and Jacking the Vehicle
• Diagnostic Starting Point - Vibration Diagnosis and Correction
• Water Pump Replacement (LA1)
• Headlamp Assembly or Headlamp Bulb Replacement (Aztek)
• Battery Negative Cable Disconnect/Connect Procedure (LA1)
• Catalytic Converter Replacement
• Tire and Wheel Removal and Installation
• Splash Shield Replacement - Engine
• Fastener Notice
• Compressor Replacement
• Fluid and Lubricant Recommendations
• Explanation of Scheduled Services
• Power Steering Pump Replacement (LA1 )
• Frame Replacement - Front (W/AWD)
• Support Brace Replacement (LA1)
• Automatic Transmission Brace Replacement (LA1)
• Cruise Control Cable Replacement
• Fuel Pressure Relief Procedure
• Propeller Shaft Replacement
• Stabilizer Shaft Link Replacement
• Wheel Drive Shaft Replacement - Front
• Intermediate Steering Shaft Replacement
• Capacities - Approximate Fluid
• CKP System Variation Learn Procedure
• Maintenance Items
• Cleaning Solvent Caution
• Disassembled Views
• Engine Component Description
• Drive Belt System Description
• New Product Information
• Base Engine Misfire without Internal Engine Noises
• Base Engine Misfire with Abnormal Internal Lower Engine Noises
• Base Engine Misfire with Abnormal Valve Train Noise
• Base Engine Misfire with Coolant Consumption
• Base Engine Misfire with Excessive Oil Consumption
• Engine Compression Test
• Engine Noise on Start-Up, but Only Lasting a Few Seconds
• Upper Engine Noise, Regardless of Engine Speed
• Lower Engine Noise, Regardless of Engine Speed
• Engine Noise Under Load
• Engine Will Not Crank - Crankshaft Will Not Rotate
• Oil Consumption Diagnosis
• Drive Belt Tensioner Diagnosis
• Crankshaft Balancer Replacement
• Cylinder Head Cleaning and Inspection
• Engine Block Cleaning and Inspection
• Fastener Tightening Specifications
• Intake Manifold Cleaning and Inspection - Upper
• Valve Rocker Arm and Push Rod Removal
• Valve Rocker Arm Cover Cleaning and Inspection
• Valve Rocker Arm and Push Rods Cleaning and Inspection
• Valve Lifters Cleaning and Inspection
• Valve Lifter Installation
• Crankshaft Balancer Cleaning and Inspection
• Engine Support Fixture
• Oil Pan Removal
• Oil Pan Cleaning and Inspection
• Oil Pan Installation
• Oil Pan Replacement
• Oil Pump Disassemble
• Oil Pump Cleaning and Inspection
• Oil Pump Assemble
• Engine Front Cover Cleaning and Inspection
• Timing Chain and Sprockets Cleaning and Inspection
• Engine Flywheel Cleaning and Inspection