Tools Required

J 36857 Engine Lift Bracket

1. Disconnect the following electrical connectors:

•	Mass airflow (MAF) sensor (1)

•	Intake air temperature (IAT) sensor (2)




2. Loosen the clamp at the air cleaner.
3. Remove the air cleaner bolts.
4. Remove the air cleaner.



5. Loosen the clamp (2) at the throttle body (1).
6. Remove the air cleaner duct (3).



7. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
8. Remove the engine cover. Refer to Engine Cover Replacement in Interior Trim.
9. Remove the grille. Refer to Grille Replacement in Exterior Trim.
10. Remove the radiator. Refer to Radiator Replacement in Engine Cooling.
11. Recover the air conditioning (A/C) system. Refer to Refrigerant Recovery and Recharging in Heating, Ventilation, and Air Conditioning.
12. Remove the front bumper. Refer to Front Bumper Replacement in Bumpers.
13. Remove the intake manifold. Refer to Intake Manifold Replacement .



14. Loosen the radiator inlet hose clamp at the thermostat housing.
15. Remove the radiator inlet hose (1) from the thermostat housing.
16. Loosen the radiator outlet hose clamp at the water pump.
17. Remove the radiator outlet hose (2) from the water pump.



18. Remove the A/C condenser lines from the condenser.



19. If equipped, remove the transmission to auxiliary cooler lines from the cooler.



20. Remove the radiator support bolts (3) from the radiator support (1).
21. Disconnect the forward lamp harness electrical connector.
22. Remove the ground strap bolts from the right and left fenders.
23. Remove the radiator support (1) from the vehicle.



24. Remove the oil fill tube bolt.
25. Remove the engine oil fill tube and upper transmission fluid indicator tube.
26. Remove the engine oil level indicator tube Refer to Oil Level Indicator and Tube Replacement .
27. Remove the A/C compressor. Refer to Air Conditioning Compressor Replacement in Heating, Ventilation, and Air Conditioning.
28. Remove the power steering pump. Refer to Power Steering Pump Replacement in Power Steering System.
29. Remove the generator bracket. Refer to Generator Bracket Replacement in Engine Electrical.
30. Disconnect the fuel lines. Refer to Metal Collar Quick Connect Fitting Service in Engine Controls - 8.1L.



31. Remove the ground strap bolt.
32. Disconnect the throttle actuator control (TAC) module electrical connectors.
33. Remove the vacuum lines from the engine, as required.
34. Disconnect the engine wiring harness connectors from the left side of the engine.
35. Disconnect the engine wiring harness connectors from the right side of the engine.
36. Reposition the engine wiring harness and tie out of the way.
37. Remove the starter motor. Refer to Starter Motor Replacement in Engine Electrical.
38. Disconnect the catalytic converter from the exhaust manifolds. Refer to Catalytic Converter Replacement in Engine Exhaust.



39. Remove the transmission cover bolts and cover.
40. Mark the flywheel and the torque converter alignment.



41. Remove the torque converter bolts.



42. Install the J 36857 and a length of chain, to the right cylinder head rear corner and left cylinder head front corner.
43. Install a suitable lifting device to the chain.



44. Remove the left engine mount bolts.



45. Remove the right engine mount bolts.
46. Remove the engine oil cooler lines from the retaining brackets.
47. Remove the transmission bolts and transmission from the engine.



48. Remove the flywheel from the crankshaft before installing the engine to the engine stand.
49. Install the engine to a suitable engine stand.
50. Remove the lifting device from the engine.
51. Remove the J 36857 from the engine.

1. Install the J 36857 and a length of chain, to the right cylinder head rear corner and left cylinder head front corner.
2. Install a lifting device to the engine.
3. Remove the engine from the engine stand.




Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

4. Install the flywheel to the crankshaft.

Tighten

•	Tighten the flywheel bolts to 80 N·m (59 lb ft) a first pass.

•	Tighten the flywheel bolts to 100 N·m (74 lb ft) a final pass.

5. Install the engine oil cooler lines to the retaining brackets.
6. Install the engine to the vehicle.



7. Install the transmission and bolts.

Tighten
Tighten the transmission bolts to 47 N·m (34 lb ft).




8. Install the right engine mount bolts.

Tighten
Tighten the engine mount bolts to 58 N·m (40 lb ft).




9. Install the left engine mount bolts.

Tighten
Tighten the engine mount bolts to 58 N·m (40 lb ft).

10. Remove the engine lifting device.
11. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.



12. Align the torque converter and flywheel marks.
13. Install the torque converter bolts.

Tighten
Tighten the torque converter bolts to 63 N·m (46 lb ft).




14. Install the transmission cover and bolts.

Tighten
Tighten the transmission cover bolts to 33 N·m (24 lb ft).

15. Connect the catalytic converter from the exhaust manifolds. Refer to Catalytic Converter Replacement in Engine Exhaust.
16. Install the starter motor. Refer to Starter Motor Replacement in Engine Electrical.
17. Untie the engine wiring harness and position.
18. Connect the engine wiring harness connectors to the right side of the engine.
19. Connect the engine wiring harness connectors to the left side of the engine.
20. Install the vacuum lines to the engine, as required.
21. Connect the TAC module electrical connectors.



22. Position the ground straps to the engine block.
23. Install the ground strap bolt.

Tighten
Tighten the ground strap bolt to 25 N·m (18 lb ft).

24. Connect the fuel lines to the fuel rail.
25. Install the generator bracket. Refer to Generator Bracket Replacement in Engine Electrical.
26. Install the power steering pump. Refer to Power Steering Pump Replacement in Power Steering System.
27. Install the A/C compressor. Refer to Air Conditioning Compressor Replacement in Heating, Ventilation, and Air Conditioning.
28. Install the engine oil level indicator tube. Refer to Oil Level Indicator and Tube Replacement .



29. Install the oil fill tube and upper transmission fluid indicator tube.
30. Install the oil fill tube bolt.

Tighten
Tighten the oil fill tube bolt to 12 N·m (106 lb in).




31. Install the radiator support (1) to the vehicle.
32. Install the ground strap bolts to the right and left fenders.
33. Connect the forward lamp harness electrical connector.
34. Install the radiator support (1) and bolts (3).



35. If equipped, install the transmission to auxiliary cooler lines to the cooler.



36. Install the A/C condenser lines to the condenser.



37. Install the radiator outlet hose (2) to the water pump.
38. Tighten the outlet hose clamp at the water pump.
39. Install the inlet hose (1) to the thermostat housing.
40. Tighten the inlet hose clamp at the thermostat housing.



41. Install the intake manifold. Refer to Intake Manifold Replacement
42. Install the front bumper. Refer to Front Bumper Replacement in Bumpers.
43. Recharge the A/C system. Refer to Refrigerant Recovery and Recharging in Heating, Ventilation and Air Conditioning.
44. Install the radiator. Refer to Radiator Replacement in Engine Cooling.
45. Install the grille. Refer to Grille Replacement in Exterior Trim.
46. Install the engine cover. Refer to Engine Cover Replacement in Interior Trim.
47. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.



48. Install the air cleaner duct (3).
49. Tighten the clamp (2) at the throttle body (1).

Tighten
Tighten the air cleaner duct clamp to 4 N·m (35 lb in).




50. Install the air cleaner.
51. Install the air cleaner bolts.

Tighten
Tighten the air cleaner bolts to 10 N·m (89 lb in).

52. Tighten the air cleaner clamp.

Tighten
Tighten the air cleaner duct clamp to 4 N·m (35 lb in).




53. Connect the following electrical connectors:

•	MAF sensor (1)

•	IAT sensor (2)

54. Before starting a new engine or one that has been repaired complete the following procedure.

•	Fill the crankcase with the proper quantity and grade of oil.

•	Add engine oil supplement GM U.S. P/N 1052367, Canada P/N 992869, or equivalent to the engine oil.

•	Remove the fuel pump fuse and disconnect the coil harness connectors, then crank until oil pressure is present.

•	Crank the engine several times. Listen for any unusual noises or evidence that any of the parts are binding.

•	Start the engine and listen for unusual noises.

•	Check the vehicle oil pressure gauge or light and confirm that the engine has acceptable oil pressure. If necessary install an oil pressure gauge and measure the oil pressure,

•	Run the engine at about 1000 RPM until the engine has reached normal operating temperature.

•	Inspect for oil and or coolant leaks while the engine is running.

•	Stop engine and perform a final inspection for the proper engine oil and coolant levels.

•	The final step is to perform the crankshaft position (CKP) sensor variation learn procedure. Refer to Crankshaft Position System Variation Learn in Engine Controls - 8.1L.