Engine Mechanical - 4.6l (3 of 5) Cadillac DTS I

Tools Required

EN 46109 Engine Front Cover Installation Guide Pins. See Special Tools .

Removal Procedure

1. Drain the engine oil. Refer to «Engine Oil and Oil Filter Replacement»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-3-of-5) .
2. Remove the front exhaust manifold pipe. Refer to «Exhaust Manifold Front Pipe Replacement»(/cadillac/dts/i-2005-2011/remont/exhaust/#engine-exhaust-system) .
3. Disconnect the engine harness electrical connector (2) from the oil level sensor.
4. Loosen the oil pan bolts (1).
5. Remove the oil pan (2) and discard the oil pan gasket.
6. Clean and inspect the oil pan, if necessary. Refer to «Oil Pan Cleaning and Inspection»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-4-of-5) .

Installation Procedure

1. Completely fill and slightly overfill the oil pan seal groove with a continuous bead of RTV sealant. Refer to «Sealers, Adhesives, and Lubricants»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-1-of-5__sealers-adhesives-lubricants) for the correct part number.
2. Ensure the RTV sealant is higher than the oil pan sealing surface (1) by 3 mm (0.118 in).
3. To prevent shifting of the oil pan, install one EN 46109 into the bolt hole in each side of the lower crankcase. See «Special Tools»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-1-of-5__special-tools) .
4. Position the oil pan (2) to the lower crankcase and finger start the oil pan bolts (1).
5. Tighten the oil pan bolts. Tighten: Tighten the bolts a first pass to 8 N.m (71 lb in). Tighten the bolts a final pass to 12 N.m (106 lb in).
6. Connect the engine harness electrical connector (2) to the oil level sensor.
7. Install the front exhaust manifold pipe. Refer to «Exhaust Manifold Front Pipe Replacement»(/cadillac/dts/i-2005-2011/remont/exhaust/#engine-exhaust-system)
8. Fill the engine oil. Refer to «Engine Oil and Oil Filter Replacement»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-3-of-5)

Crankshaft Rear Oil Seal Replacement

Special Tools

1. EN-48072 Sealant Applicator. See «Special Tools»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-1-of-5__special-tools) .
2. J 42841-A Crankshaft Rear Oil Seal Remover. See «Special Tools»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-1-of-5__special-tools) .
3. J 45930-A Crankshaft Rear Oil Seal Installer. See «Special Tools»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-1-of-5__special-tools) .

1. Remove the transaxle. Refer to «Transmission Replacement»(/cadillac/dts/i-2005-2011/remont/automatic-trans/#how-to-overhaul-the-automatic-transaxle-4t80-e-removal-installation-service-troubleshooting-diagnosis__transmission-replacement) .
2. Remove the flywheel. Refer to «Engine Flywheel Replacement»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-2-of-5__engine-flywheel-replacement) .
3. Place the J 42841-A on to the crankshaft. See «Special Tools»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-1-of-5__special-tools) .
4. Install the J 42841-A retaining bolts. See «Special Tools»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-1-of-5__special-tools) .
5. Using a drill motor, variable speed preferred, with a socket adapter, install eight one-inch self-drilling screws into the seal using the guide holes in the removal tool. When drilling, make sure you reduce the drill speed when the screw begins threading into the seal.
6. With all eight removal screws installed, remove the J 42841-A retaining bolts. See «Special Tools»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-1-of-5__special-tools) .
7. Install the center screw to the J 42841-A . See «Special Tools»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-1-of-5__special-tools) .
8. Tighten the center screw on the J 42841-A to pull the seal assembly off the end of the crankshaft. See «Special Tools»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-1-of-5__special-tools) .

1. Ensure the engine block where the crankshaft rear oil seal is installed is a deep bore (1). A deep bore of approximately 15 mm (0.5906 in) was used on engines from March 1, 1996 and later. A shallow bore of approximately 8 mm (0.3150 in) was used on engines from 1993 through February 29, 1996. This block would use a lip-style crankshaft rear oil seal and the J 38817-A for installation.
2. Inspect the engine block bore (1) and the crankshaft flange (2) for the damage. Repair or replace any damaged components.
3. Ensure the oil drain-back hole (1) is clear of debris using a wire or an unbound plastic tie wrap (2).
4. Clean the bore in the block with cleaner solvent GM P/N 12378392 or 12346139 (Canadian P/N 88901247).
5. Remove the proper sized bolts from the J 45930-A . See «Special Tools»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-1-of-5__special-tools) . Use the bolts (2) 8 mm or the bolts (3) 11 mm.
6. Install the EN-48072 pilot base onto the crankshaft. See «Special Tools»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-1-of-5__special-tools) . The hub on the crankshaft will fit into the recess on the inboard side of the EN-48072 pilot base. See «Special Tools»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-1-of-5__special-tools) .
7. Use the proper bolts from the J 45930-A to retain the EN-48072 pilot base in place. See «Special Tools»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-1-of-5__special-tools) .
8. Install the EN-48072 applicator housing over the EN-48072 pilot base. See «Special Tools»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-1-of-5__special-tools) . Ensure the EN-48072 applicator housing bottoms in the bore of the block. See «Special Tools»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-1-of-5__special-tools) .
9. Apply the sealant GM P/N 12378521 (Canadian P/N 88901148) to the bore outer diameter in the block. Ensure the sealant does not block the drain hole.
10. Using a suitable tool spread the sealant within the bore to ensure an even coating across the bore.
11. Using both hands, slowly and evenly, pull the EN-48072 applicator housing out of the bore and remove it from the EN-48072 pilot base. See «Special Tools»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-1-of-5__special-tools) .
12. Remove the J 45930-A bolts from the EN-48072 pilot base. See «Special Tools»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-1-of-5__special-tools) .
13. Remove the EN-48072 pilot base. See «Special Tools»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-1-of-5__special-tools) .
14. Ensure that the sealant (1) is evenly spread across the bore of the block.
15. Ensure the drain back hole (1) is clear of the sealant.
16. Ensure the proper size of bolt (2) 8 mm or (3) 11 mm is being installed in the J 45930-A . See «Special Tools»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-1-of-5__special-tools) .
17. Turn the center nut (1) of the J 45930-A until the center hub (2) protrudes approximately 15 mm (0. See «Special Tools»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-1-of-5__special-tools) .591 in) beyond the outer plate (3).
18. Do not lubricate any part of the new cassette style crankshaft rear oil seal.
19. Install the new cassette style crankshaft rear oil seal onto the center hub of the J 45930-A . See «Special Tools»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-1-of-5__special-tools) .
20. Thread the two J 45930-A mounting bolts into the crankshaft flywheel bolt holes. See «Special Tools»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-1-of-5__special-tools) .
21. Tighten the two mounting bolts until the J 45930-A is firmly mounted on the crankshaft. See «Special Tools»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-1-of-5__special-tools) .
22. Install the new cassette style crankshaft rear oil seal by turning the nut of the J 45930-A until the drive portion of the J 45930-A bottoms against the crankcase. See «Special Tools»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-1-of-5__special-tools) .
23. Loosen the center nut to release pressure on the crankcase.
24. Loosen the two mounting bolts.
25. Remove the J 45930-A from the crankshaft. See «Special Tools»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-1-of-5__special-tools) .
26. Wipe off any excessive sealant from the block.
27. Ensure the new cassette style crankshaft rear oil seal is installed properly. The outer surface of the seal (3) should be 0.500-0.800 mm (0.0197-0.0315 in) (1) below the surface of the engine block (2). The inner surface of the sleeve (6) should be 0.400-0.900 mm (0.0158-0.0354 in) (4) below the surface of the outer surface of the seal (5). The installed seal and sleeve need to be parallel to the block by 0.000-0.500 mm (0.000-0.0197 in).
28. Clean all tools to remove any residual sealant.
29. Install the flywheel. Refer to «Engine Flywheel Replacement»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-2-of-5__engine-flywheel-replacement) .
30. Install the transaxle. Refer to «Transmission Replacement»(/cadillac/dts/i-2005-2011/remont/automatic-trans/#how-to-overhaul-the-automatic-transaxle-4t80-e-removal-installation-service-troubleshooting-diagnosis__transmission-replacement) .

Engine Replacement

Tools Required

1. J 37097-A Hose Clamp Remover/Installer. See «Special Tools»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-1-of-5__special-tools) .
2. J 38185 Hose Clamp Pliers
3. J 39580 Universal Engine Support Table
4. J 41623-B Cooler Quick Connect Tool
5. J 42640 Steering Column Lock Pin

1. Disconnect the negative battery cable. Refer to «Battery Negative Cable Disconnection and Connection»(/cadillac/dts/i-2005-2011/remont/charging-system/#battery-charging-system-and-starting-system) .
2. Remove the fuel injector sight shield. Refer to «Fuel Injector Sight Shield Replacement»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-2-of-5) .
3. Recover the air conditioning (A/C) refrigerant system. Refer to «Refrigerant Recovery and Recharging»(/cadillac/dts/i-2005-2011/remont/automatic-hvac-system/#heating-ventilation-and-air-conditioning__refrigerant-recovery-recharging) .
4. Reposition the brake booster vacuum hose clamp at the engine port.
5. Disconnect the brake booster vacuum hose from the vacuum connection and position aside.
6. Disconnect the fuel feed and evaporative emission (EVAP) line quick-connect fittings (1, 2). Refer to «Metal Collar Quick Connect Fitting Service»(/cadillac/dts/i-2005-2011/remont/testing-diagnostics/#engine-control-system-fuel-system-46l-introduction-2-of-2) and «Plastic Collar Quick Connect Fitting Service»(/cadillac/dts/i-2005-2011/remont/testing-diagnostics/#engine-control-system-fuel-system-46l-introduction-2-of-2) .
7. Remove the front compartment sight shield. Refer to «Front Compartment Sight Shields Replacement»(/cadillac/dts/i-2005-2011/remont/exterior-body-panels/#bolted-exterior-body-panels-and-closures) .
8. Remove the air cleaner. Refer to «Air Cleaner Assembly Replacement»(/cadillac/dts/i-2005-2011/remont/testing-diagnostics/#engine-control-system-fuel-system-46l-introduction-2-of-2) .
9. Disengage the junction block cover lock tabs.
10. Remove the junction block cover.
11. Remove the nut (1) securing the starter cable to the bussed electrical center (BEC).
12. Remove the starter cable clip (4) from the BEC.
13. Remove the starter cable from the BEC terminal and secure to the top of the engine.
14. Disengage the lever lock.
15. Disconnect the engine harness electrical connector from the transaxle control module (TCM).
16. Disengage the lever lock.
17. Disconnect the engine harness electrical connector from the body harness electrical connector.
18. Secure the TCM and engine harness wiring branches to the engine.
19. Disengage the lever locks.
20. Disconnect the engine harness electrical connectors from the engine control module (ECM).
21. Remove the junction block bolts.
22. Remove the junction block.
23. Remove the engine harness (1) from the BEC.
24. Remove the engine ground strap bolt (1) from the right side frame rail.
25. Secure the ground strap to the engine.
26. Remove the transaxle shift cable clip from the shift cable bracket.
27. Remove the transaxle shift cable retainer (1).
28. Disconnect the transaxle shift cable end (2) from the range selector lever (1).
29. Remove the transaxle shift cable from the bracket and position the cable aside.
30. Drain the cooling system. Refer to «Cooling System Draining and Filling (Vac-N-Fill)»(/cadillac/dts/i-2005-2011/remont/cooling-system-mechanical/#engine-cooling-system__cooling-system-draining-filling-vac-n-fill) or «Cooling System Draining and Filling (Static Fill)»(/cadillac/dts/i-2005-2011/remont/cooling-system-mechanical/#engine-cooling-system__cooling-system-draining-filling-static) .
31. Using the J 37097-A reposition the radiator inlet hose clamp (1). See «Special Tools»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-1-of-5__special-tools) .
32. Remove the radiator inlet hose (2) from the water pump housing and position aside.
33. Using the J 38185 reposition the radiator outlet hose clamp (1).
34. Remove the radiator outlet hose (2) from the thermostat housing and position aside.
35. Reposition the radiator surge tank inlet hose clamp at the surge tank.
36. Remove the surge tank inlet hose from the surge tank.
37. Reposition the heater inlet (1) and outlet (2) hose clamps at the heater pipes.
38. Remove the heater inlet (2) and outlet (3) hoses from the heater pipes.
39. Remove the master cylinder nuts and master cylinder from the brake booster.
40. Reposition the master cylinder and secure the master cylinder to the engine.
41. Loosen the upper transaxle oil cooler pipe bolt (1) from the fan shroud.
42. Slide the plastic caps off the transaxle oil cooler pipe quick connect fittings.
43. Remove the right front engine mount strut bolt.
44. Disconnect the transaxle oil cooler pipes from the radiator using the J 41623-B .
45. Lock the steering column by installing the J 42640 into the underside of the steering column.
46. Remove the left and right side strut tower bolts (1). (Left side shown, right side similar.)
47. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/dts/i-2005-2011/remont/hoistjack/#general-information__lifting-jacking-the-vehicle) .
48. Remove the rear exhaust manifold pipe. Refer to «Exhaust Manifold Rear Pipe Replacement»(/cadillac/dts/i-2005-2011/remont/exhaust/#engine-exhaust-system) .
49. Remove the front wheels. Refer to «Tire and Wheel Removal and Installation»(/cadillac/dts/i-2005-2011/remont/wheel-tire-system/#tires-and-wheels__tire-wheel-removal-installation) .
50. Remove the engine harness grommet (2) from the frame rail bracket.
51. Remove the engine harness clip (3) from the ride lever sensor bracket.
52. Disconnect the electronic suspension front position sensor link from the lower control arms ball stud, if equipped.
53. Loosen the nut (2) securing the left front brake pipe bracket (4) to the body frame rail.
54. Remove the front brake pipe bracket (4) from the body frame rail.
55. Loosen the nut (1) securing the right front brake pipe bracket (4) to the body frame rail.
56. Remove the front brake pipe bracket (4) from the body frame rail.
57. Disconnect the rear brake pipes from the front brake pipes.
58. Plug the open brake lines in order to prevent fluid loss and/or system contamination.
59. Remove the A/C compressor discharge hose bolt at the condenser.
60. Remove the A/C compressor discharge hose from the condenser and secure to the engine.
61. Plug the A/C condenser discharge port.
62. Remove the A/C compressor suction hose nut at the condenser.
63. Remove the A/C compressor suction hose from the condenser and secure to the engine.
64. Plug the A/C condenser suction port.
65. Remove the intermediate steering shaft cover.
66. Remove the intermediate shaft pinch bolt.
67. Remove the intermediate shaft from the steering gear.
68. Remove the oxygen sensor wiring harness heat shield. Refer to «Oxygen Sensor Wiring Harness Heat Shield Replacement»(/cadillac/dts/i-2005-2011/remont/exhaust/#engine-exhaust-system) .
69. Disconnect the engine harness electrical connector from the heated oxygen sensor (HO2S).
70. Remove the transaxle brace bolts.
71. Remove the transaxle brace.
72. Remove the torque converter cover bolt.
73. Remove the torque converter cover.
74. Remove the flywheel to torque converter bolts. (Engine removed for clarity).
75. Position the J 39580 under the frame.
76. Lower the vehicle onto the J 39580 .
77. If the J 39580 is not available. Support the powertrain with four suitable jackstands.
78. Place a 2 in x 4 in block of wood between the front of the engine oil pan and the engine frame.
79. Secure the front hoist pads to the vehicle.
80. Remove the front fascia. Refer to «Front Bumper Fascia Replacement»(/cadillac/dts/i-2005-2011/remont/exterior-body-panels/#bumper-system-fascia) .
81. Remove the 6 bolts (1) attaching the frame to the body. (Left side shown, right side similar).
82. Carefully raise the vehicle in order to clear the supported engine/transaxle assembly.
83. Drain the engine oil. Refer to «Engine Oil and Oil Filter Replacement»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-3-of-5) .
84. Remove the heater outlet pipe nut (2) from the transaxle stud.
85. Reposition the heater outlet pipe clamp (1) at the water pump housing.
86. Remove the heater outlet pipe.
87. Remove the secondary air injection (AIR) inlet hose retainer from the transaxle stud.
88. Disconnect the AIR inlet hose quick connect fitting from the AIR pump. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/dts/i-2005-2011/remont/testing-diagnostics/#engine-control-system-fuel-system-46l-introduction-2-of-2) .
89. Remove the AIR inlet hose.
90. Reposition the AIR outlet hose clamp at the AIR outlet pipe.
91. Separate the AIR outlet hose from the outlet pipe.
92. Remove the AIR pipe outlet pipe nut (3) from the transaxle stud.
93. Remove the AIR pipe outlet pipe nut (2) from the check valve bracket stud.
94. Disconnect the AIR outlet pipe quick connect fitting from the check valve. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/dts/i-2005-2011/remont/testing-diagnostics/#engine-control-system-fuel-system-46l-introduction-2-of-2) .
95. Remove the AIR outlet pipe from the studs.
96. Remove the ignition control module (ICM) ground strap bolt (3) from the right cylinder head.
97. Remove the ICM ground strap (2) from the cylinder head.
98. Disconnect the following engine harness electrical connectors from the rear of the engine: The EVAP solenoid (1) The exhaust gas recirculation (EGR) valve (2) The fuel injectors (3) The ICM (4)
99. Disconnect the following engine harness electrical connectors from the front of the engine: The fuel injectors (1) The ICM (3) The manifold absolute pressure (MAP) sensor (4) the throttle actuator (5)
100. Remove the engine harness clip (2) from the fuel rail stud.
101. Disconnect the following engine harness electrical connectors from the top of the engine: The starter inline (1) The AIR check valve (4)
102. Disconnect the engine harness electrical connector (1) from the engine valley jumper harness electrical connector.
103. Disconnect the engine harness electrical connector (3) from the power steering sensor.
104. Remove the engine harness clip (2) from the steering gear shield.
105. Remove the engine harness ground nut (4).
106. Remove the engine harness ground (5).
107. Disconnect the engine harness electrical connector (6) from the engine coolant temperature (ECT) sensor.
108. Disconnect the engine harness electrical connector (1) from the vehicle speed sensor (VSS).
109. Remove the engine harness clips (2, 3) from the rear engine mount bracket and steering gear shield.
110. Disconnect the engine harness electrical connector from the A/C pressure sensor.
111. Remove the engine harness clip (1) from the boss on the engine block.
112. Disconnect the following engine harness electrical connectors: The oil pressure sensor (2) The oil level sensor (3) The A/C compressor (4) The generator (5)
113. Disconnect the engine harness electrical connectors from the following: The AIR pump (1) The brake modulator (2)
114. Remove the engine harness clip (1) from the engine bracket.
115. Remove the connector position assurance (CPA) retainer.
116. Disconnect the engine harness electrical connector (3) from the HO2S.
117. Disconnect the engine harness electrical connector from the transaxle.
118. Remove the engine harness ground bolts (2, 4, and 6).
119. Gather all the branches of the engine harness and remove the engine harness from the engine.
120. Reposition the power steering outlet hose clamp at the pump reservoir.
121. Remove the power steering outlet hose from the reservoir.
122. Remove the power steering outlet pipe bolt from the engine mount strut bracket.
123. Remove the power steering inlet pipe fitting from the power steering pump.
124. Remove the power steering inlet pipe nut (1) from the rear engine mount bracket stud.
125. Remove the power steering inlet pipe bracket from the stud.
126. Remove the A/C compressor discharge hose nut at the compressor.
127. Unsecure the hose from the engine and remove the A/C compressor discharge hose.
128. Plug the A/C compressor discharge port.
129. Remove the A/C compressor suction hose nut at the compressor.
130. Unsecure the hose from the engine and remove the A/C compressor suction hose.
131. Plug the A/C compressor suction port.
132. Remove the transaxle brace bolt.
133. Remove the transaxle brace nuts.
134. Remove the transaxle brace.
135. Remove the transaxle brace bolt/stud to the transaxle.
136. Remove the transaxle brace bolts to the engine.
137. Remove the transaxle brace.
138. Loosen the front engine mount bracket nut with the transaxle brace behind it.
139. Remove the transaxle brace bolt.
140. Remove the transaxle brace.
141. Install an engine lift chain to the engine lift brackets and attach an engine lifting device.
142. Remove the rear engine mount to frame nut.
143. Remove the rear engine mount bracket bolts and stud.
144. Remove the rear engine mount bracket.
145. Remove the front engine mount to frame nut.
146. Remove the rear transaxle bolt.
147. Remove the upper transaxle bolts.
148. Separate the engine from the transaxle.
149. Raise the engine from the supported frame and transaxle assembly.
150. Remove the front engine mount bracket bolts/nuts.
151. Remove the front engine mount bracket.
152. Install the engine assembly to a suitable engine stand.

1. Install the front engine mount bracket.
2. Install the front engine mount bracket bolts/nuts. Tighten: Tighten the bolts/nuts 50 N.m (37 lb ft).
3. Install an engine lift chain to the engine lift brackets and attach an engine lifting device.
4. Remove the engine assembly from the engine stand.
5. Carefully position and install the engine to the supported frame and transaxle, aligning the engine dowel pins to the transaxle.
6. Install the upper transaxle bolts. Tighten: Tighten the bolts to 75 N.m (55 lb ft).
7. Install the rear transaxle bolt. Tighten: Tighten the bolt to 75 N.m (55 lb ft).
8. Install the front engine mount to frame nut. Tighten: Tighten the nut to 80 N.m (59 lb ft).
9. Position the rear engine mount bracket to the engine and transaxle.
10. Install the rear engine mount bracket bolts and stud. Tighten: Tighten the bolts/stud to 73 N.m (54 lb ft).
11. Install the rear engine mount to frame nut. Tighten: Tighten the nut to 80 N.m (59 lb ft).
12. Remove the engine lifting device and lift chain.
13. Install the transaxle brace.
14. Install the transaxle brace bolt. Tighten: Tighten the bolt to 50 N.m (37 lb ft).
15. Tighten the front engine mount bracket nut with the transaxle brace behind it. Tighten: Tighten the nut to 50 N.m (37 lb ft).
16. Position the transaxle brace to the engine and transaxle.
17. Install the transaxle brace bolts to the engine. Tighten: Tighten the bolts to 50 N.m (37 lb ft).
18. Install the transaxle brace bolt/stud to the transaxle. Tighten: Tighten the bolt/stud to 50 N.m (37 lb ft).
19. Install the transaxle brace to the lift bracket studs.
20. Install the transaxle brace bolt. Tighten: Tighten the bolt to 50 N.m (37 lb ft).
21. Install the transaxle brace nuts. Tighten: Tighten the nut to 50 N.m (37 lb ft).
22. Remove the plug from the A/C compressor suction port.
23. Remove and discard the old sealing washer from the compressor end of the suction hose.
24. Install a NEW sealing washer to the compressor end of the suction hose.
25. Install the A/C compressor suction hose the compressor.
26. Install the A/C compressor suction hose nut at the compressor. Tighten: Tighten the nut to 16 N.m (12 lb ft).
27. Secure the suction hose to the engine.
28. Remove the plug from the A/C compressor discharge port.
29. Remove and discard the old sealing washer from the compressor end of the discharge hose.
30. Install a NEW sealing washer to the compressor end of the discharge hose.
31. Install the A/C compressor discharge hose the compressor.
32. Install the A/C compressor discharge hose nut at the compressor. Tighten: Tighten the nut to 16 N.m (12 lb ft).
33. Secure the discharge hose to the engine.
34. Install the power steering inlet pipe fitting to the power steering pump. Tighten: Tighten the fitting to 27 N.m (20 lb ft).
35. Install the power steering inlet pipe bracket to the stud.
36. Install the power steering inlet pipe nut (1) to the rear engine mount bracket stud. Tighten: Tighten the nut to 9 N.m (80 lb in).
37. Install the power steering outlet hose to the reservoir.
38. Position the power steering outlet hose clamp at the pump reservoir.
39. Install the power steering outlet pipe bolt to the engine mount strut bracket. Tighten: Tighten the bolt to 9 N.m (80 lb in).
40. Install the engine harness to the engine.
41. Position the engine harness grounds (1, 3, and 5) to the engine block.
42. Install the engine harness ground bolts (2, 4, and 6). Tighten: Tighten the bolts to 25 N.m (18 lb ft).
43. Connect the engine harness electrical connector to the transaxle.
44. Connect the engine harness electrical connector (3) to the HO2S.
45. Install the CPA retainer.
46. Install the engine harness clip (1) to the engine bracket.
47. Connect the engine harness electrical connectors to the following: The AIR pump (1) The brake modulator (2)
48. Install the engine harness clip (1) to the boss on the engine block.
49. Connect the following engine harness electrical connectors: The oil pressure sensor (2) The oil level sensor (3) The A/C compressor (4) The generator (5)
50. Connect the engine harness electrical connector to the A/C pressure sensor.
51. Connect the engine harness electrical connector (1) to the VSS.
52. Install the engine harness clips (2, 3) to the rear engine mount bracket and steering gear shield.
53. Connect the engine harness electrical connector (6) to the ECT sensor.
54. Install the engine harness ground (5) to the stud.
55. Install the engine harness ground nut (4). Tighten: Tighten the bolt to 25 N.m (18 lb ft).
56. Install the engine harness clip (2) to the steering gear shield.
57. Connect the engine harness electrical connector (3) to the power steering sensor.
58. Connect the engine harness electrical connector (1) to the engine valley jumper harness electrical connector.
59. Connect the following engine harness electrical connectors to the top of the engine: The starter inline (1) The AIR check valve (4)
60. Connect the following engine harness electrical connectors to the front of the engine: The fuel injectors (1) The ICM (3) The MAP sensor (4) the throttle actuator (5)
61. Install the engine harness clip (2) to the fuel rail stud.
62. Connect the following engine harness electrical connectors to the rear of the engine: The EVAP solenoid (1) The EGR valve (2) The fuel injectors (3) The ICM (4)
63. Position the ICM ground strap (2) to the cylinder head.
64. Install the ICM ground strap bolt (3) to the right cylinder head. Tighten: Tighten the bolt to 25 N.m (18 lb ft).
65. Install the AIR pipe over the studs.
66. Connect the AIR outlet pipe quick connect fitting to the check valve. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/dts/i-2005-2011/remont/testing-diagnostics/#engine-control-system-fuel-system-46l-introduction-2-of-2) .
67. Install the AIR pipe outlet pipe nut (2) to the check valve bracket stud. Tighten: Tighten the nut to 9 N.m (80 lb in).
68. Install the AIR pipe outlet pipe nut (3) to the transaxle stud. Tighten: Tighten the nut to 9 N.m (80 lb in).
69. Connect the AIR outlet hose to the AIR outlet pipe.
70. Position the AIR outlet hose clamp at the AIR outlet pipe.
71. Install the AIR inlet hose.
72. Connect the AIR inlet hose quick connect fitting to the AIR pump. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/dts/i-2005-2011/remont/testing-diagnostics/#engine-control-system-fuel-system-46l-introduction-2-of-2) .
73. Install the AIR inlet hose retainer to the transaxle stud.
74. Install the heater outlet pipe to the engine and stud.
75. Install the heater outlet pipe nut (2) to the transaxle stud. Tighten: Tighten the nut to 25 N.m (18 lb ft).
76. Position the heater outlet pipe clamp (1) at the water pump housing.
77. Position the engine/transaxle assembly under the vehicle.
78. Carefully lower the vehicle over the engine/transaxle assembly, aligning the struts to the strut towers.
79. Install the 6 bolts (1) attaching the frame to the body. (Left side shown, right side similar). Tighten: Tighten the bolts to 191 N.m (141 lb ft).
80. Install the front fascia. Refer to «Front Bumper Fascia Replacement»(/cadillac/dts/i-2005-2011/remont/exterior-body-panels/#bumper-system-fascia) .
81. Raise the vehicle off of the J 39580 or the jack stands.
82. Remove the J 39580 or jack stands from under the frame.
83. Align the flywheel with the marks made during the removal.
84. Install the flywheel to torque converter bolts. (Engine removed for clarity). Tighten: Tighten the bolts to 60 N.m (44 lb ft).
85. Position the torque converter cover.
86. Install the torque converter cover bolt. Tighten: Tighten the bolt to 12 N.m (106 lb in).
87. Install the transaxle brace.
88. Install the transaxle brace bolts. Tighten: Tighten the bolts to 47 N.m (35 lb ft).
89. Connect the engine harness electrical connector to the HO2S.
90. Install the oxygen sensor wiring harness heat shield. Refer to «Oxygen Sensor Wiring Harness Heat Shield Replacement»(/cadillac/dts/i-2005-2011/remont/exhaust/#engine-exhaust-system) .
91. Install the intermediate shaft to the steering gear.
92. Install the intermediate shaft pinch bolt. Tighten: Tighten the bolt to 45 N.m (33 lb ft).
93. Install the intermediate steering shaft cover.
94. Remove the plug from the A/C condenser suction port.
95. Unsecure the A/C compressor suction hose from the engine.
96. Remove and discard the old sealing washer from the condenser end of the suction hose.
97. Install a NEW sealing washer to the condenser end of the suction hose.
98. Install the A/C compressor suction hose to the condenser.
99. Install the A/C compressor suction hose nut. Tighten: Tighten the nut to 16 N.m (12 lb ft).
100. Remove the plug from the A/C condenser discharge port.
101. Unsecure the A/C compressor discharge hose from the engine.
102. Remove and discard the old sealing washer from the condenser end of the discharge hose.
103. Install a NEW sealing washer to the condenser end of the discharge hose.
104. Install the A/C compressor discharge hose to the condenser.
105. Install the A/C compressor discharge hose nut. Tighten: Tighten the nut to 16 N.m (12 lb ft).
106. Remove the plugs from the open brake lines.
107. Connect the rear brake pipes to the front brake pipes. Tighten: Tighten the fittings to 20 N.m (15 lb ft).
108. Install the front brake pipe bracket (4) to the body frame rail.
109. Tighten the nut (1) securing the right front brake pipe bracket (4) to the body frame rail. Tighten: Tighten the nut to 9 N.m (80 lb in).
110. Install the front brake pipe bracket (4) to the body frame rail.
111. Tighten the nut (2) securing the left front brake pipe bracket (4) to the body frame rail. Tighten: Tighten the nut to 9 N.m (80 lb in).
112. Install the front air deflector. Refer to «Front Air Deflector Replacement»(/cadillac/dts/i-2005-2011/remont/exterior-body-panels/#bumper-system-fascia) .
113. Connect the electronic suspension front position sensor link to the lower control arms ball stud, if equipped.
114. Install the engine harness clip (3) to the ride lever sensor bracket.
115. Install the engine harness grommet (2) to the frame rail bracket.
116. Install the front wheels. Refer to «Tire and Wheel Removal and Installation»(/cadillac/dts/i-2005-2011/remont/wheel-tire-system/#tires-and-wheels__tire-wheel-removal-installation) .
117. Install the rear exhaust manifold pipe. Refer to «Exhaust Manifold Rear Pipe Replacement»(/cadillac/dts/i-2005-2011/remont/exhaust/#engine-exhaust-system) .
118. Lower the vehicle.
119. Install the left and right side strut tower bolts (1). (Left side shown, right side similar). Tighten: Tighten the bolts to 40 N.m (30 lb ft).
120. Remove the J 42640 from the steering column.
121. Connect the transaxle oil cooler pipes to the radiator.
122. Slide the plastic caps onto the transaxle oil cooler pipe quick connect fittings.
123. Tighten the upper transaxle oil cooler pipe bolt (1) to the fan shroud. Tighten: Tighten the bolt to 6 N.m (53 lb in).
124. Unsecure the master cylinder from the engine and position the master cylinder the brake booster.
125. Install the master cylinder nuts. Tighten: Tighten the nuts to 30 N.m (22 lb ft).
126. Install the heater inlet (2) and outlet (3) hoses to the heater pipes.
127. Position the heater inlet (1) and outlet (2) hose clamps at the heater pipes.
128. Install the surge tank inlet hose to the surge tank.
129. Position the radiator surge tank inlet hose clamp at the surge tank.
130. Install the radiator outlet hose (2) to the thermostat housing.
131. Using the J 38185 position the radiator outlet hose clamp (1).
132. Install the radiator inlet hose (2) to the water pump housing.
133. Using the J 37097-A position the radiator inlet hose clamp (1). See «Special Tools»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-1-of-5__special-tools) .
134. Install the transaxle shift cable to the bracket.
135. Connect the transaxle shift cable end (2) to the range selector lever (1).
136. Install the transaxle shift cable retainer (1).
137. Install the transaxle shift cable clip to the shift cable bracket.
138. Position the ground strap to the frame rail.
139. Install the engine ground strap bolt (1) to the right side frame rail. Tighten: Tighten the bolt to 25 N.m (18 lb ft).
140. Install the engine harness (1) to the BEC.
141. Install the junction block.
142. Install the junction block bolts. Tighten: Tighten the bolts to 6.5 N.m (58 lb in).
143. Connect the engine harness electrical connectors to the ECM.
144. Engage the lever locks.
145. Connect the engine harness electrical connector to the body harness electrical connector.
146. Engage the lever lock.
147. Connect the engine harness electrical connector to the TCM.
148. Engage the lever lock.
149. Install the starter cable to the BEC terminal.
150. Install the starter cable clip (4) to the BEC.
151. Install the nut (1) securing the starter cable to the BEC. Tighten: Tighten the nut to 15 N.m (11 lb ft).
152. Install the junction block cover.
153. Install the air cleaner. Refer to «Air Cleaner Assembly Replacement»(/cadillac/dts/i-2005-2011/remont/testing-diagnostics/#engine-control-system-fuel-system-46l-introduction-2-of-2) .
154. Install the front compartment sight shield. Refer to «Front Compartment Sight Shields Replacement»(/cadillac/dts/i-2005-2011/remont/exterior-body-panels/#bolted-exterior-body-panels-and-closures) .
155. Connect the fuel feed and EVAP line quick-connect fittings (1, 2). Refer to «Metal Collar Quick Connect Fitting Service»(/cadillac/dts/i-2005-2011/remont/testing-diagnostics/#engine-control-system-fuel-system-46l-introduction-2-of-2) and «Plastic Collar Quick Connect Fitting Service»(/cadillac/dts/i-2005-2011/remont/testing-diagnostics/#engine-control-system-fuel-system-46l-introduction-2-of-2) .
156. Connect the brake booster vacuum hose to the vacuum connection.
157. Position the brake booster vacuum hose clamp at the engine port.
158. Connect the negative battery cable. Refer to «Battery Negative Cable Disconnection and Connection»(/cadillac/dts/i-2005-2011/remont/charging-system/#battery-charging-system-and-starting-system) .
159. Fill the engine with oil. Refer to «Engine Oil and Oil Filter Replacement»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-3-of-5) .
160. Fill the cooling system. Refer to «Cooling System Draining and Filling (Vac-N-Fill)»(/cadillac/dts/i-2005-2011/remont/cooling-system-mechanical/#engine-cooling-system__cooling-system-draining-filling-vac-n-fill) or «Cooling System Draining and Filling (Static Fill)»(/cadillac/dts/i-2005-2011/remont/cooling-system-mechanical/#engine-cooling-system__cooling-system-draining-filling-static) .
161. Bleed the brake system. Refer to «Hydraulic Brake System Bleeding (Manual)»(/cadillac/dts/i-2005-2011/remont/mechanical-hydraulic/#hydraulic-brake-system) or «Hydraulic Brake System Bleeding (Pressure)»(/cadillac/dts/i-2005-2011/remont/mechanical-hydraulic/#hydraulic-brake-system) .
162. Recharge the A/C refrigerant system. Refer to «Refrigerant Recovery and Recharging»(/cadillac/dts/i-2005-2011/remont/automatic-hvac-system/#heating-ventilation-and-air-conditioning__refrigerant-recovery-recharging) .
163. Bleed the power steering system. Refer to «Power Steering System Bleeding»(/cadillac/dts/i-2005-2011/remont/manual-power-steering/#power-steering-system) .
164. Check the wheel alignment. Refer to «Wheel Alignment Measurement»(/cadillac/dts/i-2005-2011/remont/wheel-alignment/#wheel-alignment-system__wheel-alignment-measurement) .
165. Pre-lube the engine. Refer to «Engine Prelubing»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-5-of-5__engine-prelubing) .
166. Install the fuel injector sight shield. Refer to «Fuel Injector Sight Shield Replacement»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-2-of-5) .
167. With the ignition OFF or disconnected, crank the engine several times. Listen for any unusual noises or evidence that any parts are binding.
168. Start the engine and listen for abnormal conditions.
169. Check the vehicle oil pressure gauge or light and confirm that the engine has acceptable oil pressure.
170. Run the engine at approximately 1000 RPM until the engine reaches normal operating temperature.
171. While the engine continues to idle raise and support the vehicle.
172. Inspect for oil, coolant and exhaust leaks while the engine is idling.
173. Lower the vehicle.
174. Perform the crankshaft position (CKP) system variation learn procedure. Refer to «Crankshaft Position System Variation Learn»(/cadillac/dts/i-2005-2011/remont/testing-diagnostics/#engine-control-system-fuel-system-46l-introduction-2-of-2__crankshaft-position-system-variation-learn) .
175. Perform a final inspection for the proper engine oil and coolant levels.
176. Road test the vehicle.

1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/dts/i-2005-2011/remont/hoistjack/#general-information__lifting-jacking-the-vehicle) .
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, 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 on the oil filter adapter, repair or replace if necessary.

1. Fill the oil filter with oil.
2. Lightly oil the replacement oil filter gasket with clean oil.
3. Install the new oil filter. Tighten: Tighten the new oil filter to 3/4 to 1 full turn, after the oil filter gasket contacts the oil filter mounting surface.
4. Install the engine oil drain plug. Tighten: Tighten the engine oil drain plug to 20 N.m (15 lb ft).
5. Lower the vehicle.
6. Fill the engine with new engine oil. Refer to «Approximate Fluid Capacities»(/cadillac/dts/i-2005-2011/remont/lubrication-system/#maintenance-and-lubrication__approximate-fluid-capacities) and «Fluid and Lubricant Recommendations»(/cadillac/dts/i-2005-2011/remont/lubrication-system/#maintenance-and-lubrication__fluid-lubricant-recommendations) .
7. Inspect for oil leaks after engine start up.

Drive Belt Removal

1. Insert a 1/2-inch drive ratchet in the drive belt tensioner (6).
2. Rotate the drive belt tensioner clockwise in order to release the belt tension.
3. Remove the drive belt from the power steering pulley (1).
4. Slowly return the drive belt tensioner to its original position.
5. Remove the drive belt from the remaining pulleys (2-5).

Power Steering Pump Removal

1. Remove the power steering pump bolt. The bolt is located perpendicular to the crankshaft centerline and behind the power steering pulley.
2. Remove the power steering pump.

Generator Removal

1. Remove the generator front bolts from the generator.
2. Remove the generator side bolts from the generator.
3. Remove the generator.

Air Conditioning (A/C) Compressor Removal

1. Remove the air conditioning compressor front mounting bolts.
2. Remove the air conditioning compressor nut from the engine block front stud.
3. Remove the air conditioning compressor side bolts from the engine block.
4. Remove the air conditioning compressor by sliding off the front mounting stud.
5. Remove the air conditioning compressor mounting stud.

Drive Belt Idler Pulley Removal

1. Loosen the drive belt idler pulley bolt.
2. Remove the drive belt idler pulley and bolt.

Drive Belt Tensioner Removal

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

Crankshaft Balancer Removal

Tools Required

1. J 38416-2 Crankshaft Button. See «Special Tools»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-1-of-5__special-tools) .
2. J 41816 Crankshaft Balancer Remover. See «Special Tools»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-1-of-5__special-tools) .
3. J 44214 Flywheel Holder. See «Special Tools»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-1-of-5__special-tools) .

1. Install the J 44214 to the engine block. See «Special Tools»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-1-of-5__special-tools) .
2. Secure the flywheel in order to prevent crankshaft rotation.
3. Remove the crankshaft balancer bolt.
4. Place the J 38416-2 in the end of the crankshaft. See «Special Tools»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-1-of-5__special-tools) .
5. Position the legs of the J 41816 onto the backside of the balancer inner hub. See «Special Tools»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-1-of-5__special-tools) .
6. Tighten the center screw on the puller until the balancer pulls clear of the crankshaft end.
7. Remove the crankshaft balancer.

J 44214 Flywheel Holder. See Special Tools .

1. Loosen the 8 engine flywheel mounting bolts.
2. Remove 7 of the 8 engine flywheel bolts leaving 1 bolt at the top of the crankshaft rotation.
3. Grip the engine flywheel and remove the remaining bolt. Do not drop the engine flywheel when removing the final bolt.
4. Remove the J 44214 from the engine block. See «Special Tools»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-1-of-5__special-tools) .

J 42841-A Rear Oil Seal Remover. See Special Tools .

1. Install the J 42841-A plate onto the crankshaft. See «Special Tools»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-1-of-5__special-tools) . The hub on the crankshaft will fit into the recess on the inboard side of the J 42841-A plate. See «Special Tools»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-1-of-5__special-tools) .
2. Use the proper bolts from the J 42841-A to retain the plate in place. See «Special Tools»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-1-of-5__special-tools) . Use the bolts (1) 8 mm or the bolts (2) 11 mm.
3. Using a drill motor, variable speed preferred, with a socket adapter, install eight 25 mm (1.0 in) self-drilling screws into the seal using the guide holes in the removal tool. When drilling, ensure the drill motor speed is reduced when the screw begins threading into the seal.
4. With all eight removal screws installed, remove the J 42841-A retaining bolts. See «Special Tools»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-1-of-5__special-tools) .
5. Install the center forcing screw.
6. Tighten the center screw on the J 42841-A in order to pull the seal assembly off the end of the crankshaft. See «Special Tools»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-1-of-5__special-tools) .
7. After removing the crankshaft rear oil seal inspect the engine block bore (1) and the crankshaft flange (2) for the damage. Repair or replace any damaged components.

Oil Level Indicator & Tube Removal

1. Remove the oil level indicator tube nut.
2. Remove the oil level indicator tube.
3. Remove and discard the O-ring from the oil level indicator tube.

Exhaust Manifold Removal - Left Side (W/O RPO NC1 or NF7)

1. Remove the oxygen sensor (1) and inspect the sensor for excessive deposits or damage. Replace the oxygen sensor if necessary.
2. Remove the exhaust manifold to exhaust intermediate pipe bolts (3).
3. Remove the exhaust manifold bolts (6).
4. Remove the exhaust manifold (2).
5. Remove and discard the exhaust manifold to exhaust intermediate pipe gasket (5).
6. Remove and discard the exhaust manifold gasket (1).
7. Remove the exhaust gas recirculation (EGR) valve inlet pipe bolt from the water crossover.
8. Disconnect the EGR valve inlet pipe nut (1) from the fitting on the exhaust intermediate pipe.
9. Remove and discard the EGR valve inlet pipe.
10. Remove the engine rear lift bracket bolts.
11. Remove the engine rear lift bracket.
12. Remove the exhaust intermediate pipe bolts.
13. Remove the exhaust intermediate pipe.
14. If equipped, remove the left coolant heater (1) as follows: Remove the coolant heater bolt. Remove the coolant heater from the cylinder block.

Exhaust Manifold Removal - Left Side (With RPO NC1 or NF7)

1. Remove the secondary air injection (AIR) valve pipe nuts from the exhaust manifold.
2. Remove the AIR valve bolt from the mounting bracket.
3. Remove the AIR valve nuts from the mounting bracket.
4. Remove the AIR valve.
5. Remove and discard the AIR valve pipe gasket.
6. Remove the oxygen sensor (1) and inspect the sensor for excessive deposits or damage. Replace the oxygen sensor if necessary.
7. Remove the exhaust manifold to exhaust intermediate pipe bolts (3).
8. Remove the exhaust manifold bolts (6).
9. Remove the exhaust manifold (2).
10. Remove and discard the exhaust manifold to exhaust intermediate pipe gasket (5).
11. Remove and discard the exhaust manifold gasket (1).
12. Remove the exhaust gas recirculation (EGR) valve inlet pipe bolt from the water crossover.
13. Disconnect the EGR valve inlet pipe nut (1) from the fitting on the exhaust intermediate pipe.
14. Remove and discard the EGR valve inlet pipe.
15. Remove the engine rear lift bracket bolts.
16. Remove the engine rear lift bracket.
17. Remove the exhaust intermediate pipe bolts.
18. Remove the exhaust intermediate pipe.
19. If equipped, remove the left coolant heater (1) as follows: Remove the coolant heater bolt. Remove the coolant heater from the cylinder block.

Exhaust Manifold Removal - Right Side (W/O RPO, NC1 or NF7)

1. Remove the oxygen sensor (1) and inspect the sensor for excessive deposits or damage. Replace the oxygen sensor if necessary.
2. Remove the right exhaust manifold retaining nuts (3).
3. Remove the exhaust manifold and the gasket (1).
4. If equipped, remove the right coolant heater (1) as follows: Remove the coolant heater retaining bolt. Remove coolant heater from the cylinder block.

Exhaust Manifold Removal - Right Side (With RPO NC1 or NF7)

1. Remove the secondary air injection (AIR) valve pipe nuts from the exhaust manifold.
2. Remove the AIR valve bolts from the mounting bracket.
3. Remove the AIR valve.
4. Remove and discard the AIR valve pipe gasket.
5. Remove the oxygen sensor (1) and inspect the sensor for excessive deposits or damage. Replace the oxygen sensor if necessary.
6. Remove the right exhaust manifold retaining nuts (3).
7. Remove the exhaust manifold and the gasket (1).
8. If equipped, remove the right coolant heater (1) as follows: Remove the coolant heater retaining bolt. Remove coolant heater from the cylinder block.

Oil Filter Adapter Removal (without Oil Cooler)

1. Remove the oil filter.
2. Remove the oil filter adapter mounting bolts.
3. Remove the oil filter adapter and discard the O-ring seals.
4. Remove the oil pressure switch, if necessary.

Oil Filter Adapter Removal (with Oil Cooler)

1. Remove the oil filter.
2. Remove the oil filter adapter mounting bolts.
3. Remove the oil filter adapter and discard the O-ring seals.
4. Remove the oil pressure switch, if necessary.

Intake Manifold Removal

1. Remove the brake booster hose from the vacuum fitting in the water crossover.
2. Remove the PCV fresh air feed tube from the camshaft cover and the throttle body.
3. Remove the PCV dirty air tube from the PCV orifice in the right camshaft cover and from the intake manifold.
4. Remove the fuel rail bracket nut from the fuel rail stud mounted to the engine lift bracket on the water crossover.
5. Remove the fuel rail studs.
6. Lift and remove the fuel rail with injectors.
7. Loosen the plenum duct clamp (1) in order to remove the intake manifold.
8. Remove the intake manifold bolts.
9. Remove the intake manifold.

Water Crossover Removal

1. Remove the water pump drive belt shield bolt and nuts.
2. Remove the water pump drive belt shield.
3. Remove the water pump drive belt by compressing the belt tensioner while sliding the belt off the drive pulley and the water pump pulley.
4. Remove the water pump drive belt tensioner bolts from the tensioner.
5. Remove the water pump drive belt tensioner from the water crossover.
6. Remove the crankshaft position sensor and knock sensor wiring harness bracket bolt.
7. Loosen the water crossover mounting bolts.
8. Remove the water crossover and all mounting bolts.
9. Remove the water crossover gaskets and mounting bolts from the water crossover.

Starter Removal

1. Disconnect the crankshaft position sensor wiring harness (1) from the camshaft position (CMP) sensor.
2. Remove the jumping ground bracket bolt (2) from the right cylinder head.
3. Disconnect the crankshaft position sensor wiring harness (1) from the knock (KS) sensors.
4. Disconnect the crankshaft position sensor wiring harness (2) from the crankshaft position (CKP) sensor.
5. Remove the crankshaft position sensor wiring harness from the engine valley.
6. Remove the KS sensors.
7. Remove the CKP sensor bolt.
8. Remove the CKP sensor.
9. Remove and discard the CKP sensor O-ring.
10. Remove the camshaft position CMP sensor bolt.
11. Remove the CMP sensor.
12. Remove and discard the CMP sensor O-ring.
13. Remove the 2 starter motor bolts.
14. Using two hands, remove the starter motor and the wiring harness by sliding the motor toward the front of the engine. The wiring harness can remain attached unless replacing the starter.

Ignition Coil Module Removal - Left Side

1. Remove the ignition coil assembly bolts.
2. Remove the ignition coil assembly.
3. Remove the left spark plugs.

Ignition Coil Module Removal - Right Side

1. If equipped, remove the fuel injector sight shield bracket bolts.
2. Remove the fuel injector sight shield bracket.
3. Remove the ignition coil assembly sight shield cover.
4. Remove the ignition coil assembly bolts (708) and ball studs (709).
5. Remove the ignition coil assembly.
6. Remove the right spark plugs.

Camshaft Cover Removal - Left Side

Tools Required

1. J 38825 Power Steering and Water Pump Pulley Remover
2. J 39946 Crankshaft Socket - See «Special Tools»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-1-of-5__special-tools) 4.0L and 4.6L.
3. J 44212 Camshaft Holding Tool. See «Special Tools»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-1-of-5__special-tools) .

1. Remove the left camshaft cover ignition coil ground strap bolt.
2. Remove the left cylinder head ignition coil ground strap bolt.
3. Remove the left ignition coil ground strap.
4. Align the crankshaft to top dead center (TDC) using the J 39946 . See «Special Tools»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-1-of-5__special-tools) .
5. Remove the end cap from the intake camshaft.
6. Remove the water pump drive pulley from the intake camshaft using the J 38825 .
7. Remove the camshaft seal screws.
8. Slide the seal off the end of the camshaft.
9. Loosen the camshaft cover bolts.
10. Lift up the front of the cover approximately 250 mm (10 in).
11. Swing the front of the cover over the intake manifold while sliding the entire cover over the end of the camshaft.
12. The camshaft cover seals, perimeter and sparkplug, should be reused unless they are damaged or if the perimeter seal is pulled from its groove during removal.
13. Install the J 44212 to the left cylinder head camshafts. See «Special Tools»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-1-of-5__special-tools) .

J 44212 Camshaft Holding Tool. See Special Tools .

1. Remove the right camshaft cover ignition coil ground strap bolt.
2. Remove the right cylinder head ignition coil ground strap bolt.
3. Remove the right ignition coil ground strap.
4. Remove the camshaft cover bolts.
5. Lift the camshaft cover from the cylinder head.
6. Install the J 44212 to the right cylinder head camshafts. See «Special Tools»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-1-of-5__special-tools) .

Engine Front Cover Removal

1. Remove the front cover perimeter bolts.
2. Remove the front cover and the gasket. Ensure that you do not damage the sealing surface.

Crankshaft Front Oil Seal Removal

The crankshaft front oil seal is not serviced as an individual component. When replacing the crankshaft front oil seal, install a NEW engine front cover. In order to precisely align the crankshaft front oil seal to the crankshaft balancer and crankshaft balancer dust shield, the engine front cover and the crankshaft front oil seal are sold as an assembly.

Oil Pump Removal

1. Remove the oil pump assembly retaining bolts (1, 2, 3) identified by the larger head size.
2. Slide the oil pump assembly off the nose of the crankshaft with the drive collar in place.
3. Wrap the oil pump in a towel for safe, clean storage until inspection or assembly is necessary.

Secondary Camshaft Drive Chain Removal - Right Side

1. Remove the cylinder head core hole plugs located in the cylinder heads. Ensure the O-ring seal is on each access plug.
2. Remove the right secondary drive chain tensioner bolts.
3. Remove the right secondary camshaft drive chain tensioner allowing it to expand as you remove it.
4. Remove the upper right secondary camshaft drive chain guide bolt.
5. Remove the camshaft sprocket bolts from the camshafts. Use an open wrench on the hex cast near the front of each camshaft to prevent engine rotation when loosening the camshaft sprocket bolts.
6. Lift the secondary camshaft drive chain from the camshaft sprocket teeth and slide the camshaft sprockets off of the camshafts.
7. Remove the right secondary camshaft drive chain.
8. Remove the right secondary camshaft drive chain shoe bolt.
9. Remove the right secondary camshaft drive chain shoe.
10. Remove the lower right secondary camshaft drive chain guide bolt.
11. Remove the right secondary camshaft drive chain guide.

Secondary Camshaft Drive Chain Removal - Left Side

1. Remove the left secondary camshaft drive chain tensioner bolts.
2. Remove the left secondary camshaft drive chain tensioner allowing it to expand as you remove it.
3. Remove the upper left secondary camshaft drive chain guide bolt.
4. Remove the camshaft sprocket bolts from the camshafts. Use an open wrench on the hex cast near the front of each camshaft to prevent engine rotation when loosening the camshaft sprocket bolts.
5. Lift the secondary camshaft drive chain from the camshaft sprocket teeth and slide the camshaft sprockets off of the camshafts.
6. Remove the left secondary drive chain.
7. Remove the left secondary camshaft drive chain shoe bolt.
8. Remove the left secondary camshaft drive chain shoe.
9. Remove the lower left secondary camshaft drive chain guide bolt.
10. Remove the left secondary camshaft drive chain guide.

Primary Camshaft Drive Chain Removal

1. Remove the camshaft intermediate drive shaft sprocket bolt.
2. Remove the primary camshaft drive chain tensioner bolts.
3. Remove the primary camshaft drive chain tensioner.
4. Remove the primary camshaft drive chain guide bolts.
5. Remove the primary camshaft drive chain guide (1).
6. Remove the camshaft intermediate drive shaft sprocket, primary camshaft drive chain and crankshaft sprocket (3) as an assembly.

Camshaft Intermediate Drive Shaft Removal

1. Remove the intermediate sprocket shaft retaining bolts.
2. Remove the intermediate sprocket shaft (1).

Exhaust Camshaft Removal - Left Side

1. Observe the markings on the bearing caps. Each bearing cap is marked in order to identify its location. The markings have the following meanings: The arrow points toward the front of the engine. The "E" indicates the exhaust camshaft. The number indicates the journal position from the front of the engine.
2. Remove the left exhaust camshaft bearing cap bolts.
3. Remove the left exhaust camshaft bearing caps. Store the bearing caps in a clean shop towel.
4. Remove the left exhaust camshaft. Place the camshaft in a secure location.
5. Cover the camshaft with an oil soaked towel in order to prevent corrosion.

Intake Camshaft Removal - Left Side

1. Observe the markings on the bearing caps. Each bearing cap is marked in order to identify its location. The markings have the following meanings: The arrow points toward the front of the engine. The "I" indicates the intake camshaft. The number indicates the journal position from the front of the engine.
2. Remove the left intake camshaft bearing cap bolts.
3. Remove the left intake camshaft bearing caps. Store the bearing caps in a clean shop towel.
4. Remove the left intake camshaft. Place the camshaft in a secure location.
5. Cover the camshaft with an oil soaked towel in order to prevent corrosion.

Exhaust Camshaft Removal - Right Side

1. Observe the markings on the bearing caps. Each bearing cap is marked in order to identify its location. The markings have the following meanings: The arrow points toward the front of the engine. The "E" indicates the exhaust camshaft. The number indicates the journal position from the front of the engine.
2. Remove the right exhaust camshaft bearing cap bolts.
3. Remove the right exhaust camshaft bearing caps. Store the bearing caps in a clean shop towel.
4. Remove the right exhaust camshaft. Place the camshaft in a secure location.
5. Cover the camshaft with an oil soaked towel in order to prevent corrosion.

Intake Camshaft Removal - Right Side

1. Observe the markings on the bearing caps. Each bearing cap is marked in order to identify its location. The markings have the following meanings: The arrow points toward the front of the engine. The "I" indicates the intake camshaft. The number indicates the journal position from the front of the engine.
2. Remove the right intake camshaft bearing cap bolts.
3. Remove the right intake camshaft bearing caps. Store the bearing caps in a clean shop towel.
4. Remove the right intake camshaft. Place the camshaft in a secure location.
5. Cover the camshaft with an oil soaked towel in order to prevent corrosion.

Valve Rocker Arm Removal - Left Side

1. Remove the camshaft followers from the left cylinder head.
2. Store the camshafts, followers and SHLAs in a clean, secure location.

Valve Rocker Arm Removal - Right Side

1. Remove the camshaft followers from the right cylinder head.
2. Store the camshafts, followers and SHLAs in a clean, secure location.

Valve Lifter Removal - Left Side

1. Remove the stationary hydraulic lash adjuster (SHLAs) from the left cylinder head lifter bores.
2. Store the camshafts, followers and SHLAs in a clean, secure location.

Valve Lifter Removal - Right Side

1. Remove the stationary hydraulic lash adjuster (SHLAs) from the right cylinder head lifter bores.
2. Store the camshafts, followers and SHLAs in a clean, secure location.

J 28410 Gasket Remover. See Special Tools .

1. Remove the 3 M6 external drive bolts from the front portion of the cylinder head.
2. Remove and discard the 10 M11 internal drive cylinder head bolts.
3. Remove the left cylinder head. Make sure that no dowel guide pins are stuck in the cylinder head.
4. After removing the cylinder head, remove any remaining bolt thread sealant material from the threaded cylinder block holes.
5. Remove the left cylinder head gasket.
6. Remove all remaining gasket material from the cylinder head and cylinder block using the J 28410 . See «Special Tools»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-1-of-5__special-tools) .
7. Place the cylinder head on a flat, clean surface with the combustion chambers face-up in order to prevent damage to the deck face.
8. Remove the cylinder head locating pins.

J 28410 Gasket Remover. See Special Tools .

1. Remove the three M6 external drive bolts from the front portion of the cylinder head.
2. Remove and discard the ten M11 internal drive cylinder head bolts.
3. Remove the right cylinder head. Make sure that no dowel guide pins are stuck in the cylinder head.
4. After removing the cylinder head, remove any remaining bolt thread sealant material from the threaded cylinder block holes.
5. Remove the right cylinder head gasket.
6. Remove all remaining gasket material from the cylinder head and cylinder block using the J 28410 . See «Special Tools»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-1-of-5__special-tools) .
7. Place the cylinder head on a flat, clean surface with the combustion chambers face-up in order to prevent damage to the deck face.
8. Remove the cylinder head locating pins.

Oil Pan Removal

1. Rotate the engine so that the oil pan is facing up.
2. Remove the oil pan drain plug.
3. Remove the oil pan bolts.
4. Remove the oil pan from the lower crankcase oil distribution manifold plate.
5. Remove and discard the oil pan gasket.
6. Remove the oil level sensor (1).

Oil Pump Suction Pipe & Screen Assembly Removal

1. Remove the oil pump pickup tube retaining nut (3) from the main bearing stud.
2. Remove the retaining bolt (1) from the oil manifold plate.
3. Remove the oil pump pickup tube (2).

Lower Crankcase Removal

1. Remove the 4 lower crankcase perimeter bolts along the left side of the engine.
2. Remove the 4 lower crankcase perimeter bolts along the right side of the engine.
3. Remove the oil manifold plate bolts.
4. Remove the main bearing bolts. Note the location of the single stud-end bolt (1) used to attach the oil pump pickup tube.
5. Remove the oil manifold plate.
6. Working on either side of the lower crankcase, separate the crankcase halves by alternately prying in the grooves (1) provided until the lower crankcase is free of the dowel pins.
7. Remove the lower crankcase.
8. Remove and discard the upper-to-lower crankcase seals.

Piston, Connecting Rod & Bearing Removal

1. Note the orientation of paired connecting rods on each crankpin. The notches in the connecting rod cap must be facing each other.
2. Before removing the connecting rods, check the connecting rod end play using the following procedure: Tap the connecting rod to one end of the crankshaft journal with a dead-blow or wooden hammer. Using feeler gauges, measure the clearance between the crankshaft counterweight and the connecting rod. The connecting rod end play should not exceed 0.500 mm (0.020 in). If the end play exceeds the specified limits, measure the width of the crankpin end of the connecting rod. The width of the crankpin end of the connecting rod should be 21.745 - 21.805 mm (0.856 - 0.858 in). If the connecting rod width is significantly smaller than specified and severe wear is present on the side of the connecting rod, replace the connecting rod. If the connecting rod width is within specification and excessive scoring is present on the crankshaft journals, replace the crankshaft.
3. Using a paint stick or permanent marker, number each piston face. Draw an arrow along the centerline of the piston pointing toward the front of the engine.
4. Mark the cylinder number on the connecting rod and the connecting rod cap with paint stick, scribe or permanent marker. The connecting rod caps must remain with the original connecting rod.
5. Remove the connecting rod bolts.
6. Remove the connecting rod cap.
7. Push the connecting rod and the piston assembly down through the top of the cylinder. Do not scratch the crankshaft journal or the cylinder wall when removing the connecting rod and the piston assembly.
8. Remove the connecting rod bearings. NEVER re-use the connecting rod bearings. Refer to «Crankshaft and Bearing Cleaning and Inspection»(/cadillac/dts/i-2005-2011/remont/mechanical/#engine-mechanical-46l-4-of-5) for inspection.
9. Reattach the connecting rod cap to the connecting to prevent damage to their mating surfaces. The cap and rod are a matched set and must be kept together.

Crankshaft Removal Procedure

1. Before removing the crankshaft, measure the crankshaft end play using the following procedure: Reinstall the lower crankcase. Place a dial indicator at the crankshaft nose. Gently force the crankshaft to the extreme front and rear positions with a pry tool while monitoring the movement of the dial indicator. The crankshaft end play should not exceed 0.05-0.5 mm (0.002-0.020 in). If the specifications are exceeded, replace the thrust bearing. If a new thrust bearing does not bring the tolerances within specification, replace the crankshaft. Remove the lower crankcase.
2. Locate or fabricate two V-blocks to support the crankshaft.
3. Using two hands, lift the crankshaft straight up from the engine block.
4. Place the crankshaft on the V-blocks in a secure place.
5. If damaged, remove the crankshaft sprocket drive pin (1) from the nose of the crankshaft.

Crankshaft Bearing Removal Procedure

1. Prepare a piece of cardboard, or equivalent, numbered one to five for bearing identification. Main bearing journals are numbered from the front of the engine.
2. Remove the upper crankshaft bearing halves from the cylinder block. Note the position of the thrust bearing (1) at the number three journal.
3. Place the upper main bearing halves on the cardboard in the correct positions. Note that the number three bearing is the thrust bearing.
4. Remove the lower main bearing halves from the lower crankcase.
5. Place the lower main bearing halves in the correct positions on the cardboard.

Engine Block Disassemble - Upper

1. Remove the engine front cover dowel pins.
2. Remove the lower crankcase locating dowel pins.
3. Remove the camshaft intermediate shaft plug.
4. Remove the transaxle locating dowels.

See also:
• Special Tools
• Exhaust Manifold Front Pipe Replacement
• Oil Pan Cleaning and Inspection
• Sealers, Adhesives, and Lubricants
• Fastener Notice
• Transmission Replacement
• Engine Flywheel Replacement
• Battery Negative Cable Disconnection and Connection
• Fuel Injector Sight Shield Replacement
• Refrigerant Recovery and Recharging
• Metal Collar Quick Connect Fitting Service
• Front Compartment Sight Shields Replacement
• Cooling System Draining and Filling (Vac-N-Fill)
• Cooling System Draining and Filling (Static Fill)
• Lifting and Jacking the Vehicle
• Tire and Wheel Removal and Installation
• Front Bumper Fascia Replacement
• Hydraulic Brake System Bleeding (Manual)
• Power Steering System Bleeding
• Wheel Alignment Measurement
• Engine Prelubing
• Crankshaft Position System Variation Learn
• Approximate Fluid Capacities
• Fluid and Lubricant Recommendations
• Torque Reaction Against Timing Drive Chain Notice
• Valve Lifter Priming Notice
• Engine Oil and Oil Filter Replacement