Engine Replacement
Engine Replacement
^ Tools Required
- EN 46114 Engine Lift Brackets
Removal Procedure
1. Disconnect the battery negative cable.
2. Remove the throttle body air inlet duct.
Important: Do not disconnect the battery negative cable from the vehicle.
3. Disconnect the battery negative cable from the engine block.
Important: Do not disconnect the battery positive cable from the vehicle, underhood electrical center or the battery.
4. Disconnect the battery positive cable from the generator and the starter.
5. Drain the cooling system. Refer to Draining and Filling Cooling System.
6. Disconnect the radiator hoses from the engine.
7. Disconnect the heater hoses from the engine.
8. Remove the engine mount struts.
Important: Relieve the fuel pressure.
9. Disconnect the fuel pressure and evaporative emission (EVAP) pipes from the engine.
10. Remove the ECM chassis (outboard) side electrical connector from the ECM.
11. Remove the wiring harness ground from the transmission.
12. Remove the vacuum brake booster hose from the intake manifold.
13. Evacuate the air conditioning system.
14. Disconnect the discharge hose from the condenser.
15. Disconnect the suction hose from the evaporator outlet tube.
16. Secure the discharge and suction hoses to the powertrain.
17. Remove the transmission electrical connector.
18. Raise and support the vehicle. Refer to Vehicle Lifting.
19. If you will be separating the engine from the transmission, remove the torque converter bolts.
20. Drain the engine oil.
21. If the vehicle is equipped with all wheel drive (AWD), remove rear propeller shaft.
22. Remove the catalytic converter.
23. Remove the front tires and wheels.
24. Remove lower radiator air baffle.
25. Remove the engine splash shields.
26. Disconnect the vehicle speed sensor (VSS) electrical connector and secure the wiring harness to the vehicle.
27. Remove the front wheel speed sensor wiring harnesses from the lower control arms and the frame.
28. Remove the tie rod ends from the steering knuckles.
29. Remove the lower ball joints from the knuckles.
30. Disconnect the drive axles from the transaxle.
31. Rotate the struts and reposition the drive axles toward the rear of the vehicle in order to provide clearance for the powertrain to be removed.
Caution: Failure to disconnect the intermediate shaft from the rack and pinion steering gear stub shaft can result in damage to the steering gear and/or intermediate shaft. This damage may cause loss of steering control which could result in an accident and possible personal injury
32. Separate the intermediate steering shaft from the steering gear.
33. Remove the engine mount lower nuts.
34. Remove the transmission mount lower nuts.
35. Position a powertrain lift table below the powertrain.
36. Lower the vehicle until the powertrain is supported by the powertrain lift table.
37. Remove the frame bolts.
38. Carefully raise the vehicle or lower the powertrain table in order to remove the powertrain from the vehicle.
39. Remove the exhaust crossover pipe.
40. Remove the coolant inlet pipe.
41. Perform the following steps if it is necessary to separate the engine from the transmission.
Important: Do not disconnect the power steering pipes or drain the power steering fluid.
41.1. Remove the power steering pressure pipe/hose from the water outlet.
42.2. Remove the accessory drive belt.
43.3. Remove the power steering reservoir and reposition to provide access.
44.4. Remove and reposition the power steering pump with the power steering pipe/hose.
45.5. Remove the transfer case brace.
46.6. Remove the transmission lower brace.
47.7. Remove the transmission upper brace nut located behind the power steering pump.
48.8. Remove the engine to transmission (bell housing) bolts.
Notice: Refer to Fastener Notice in Service Precautions.
42. Use 4 M1 0x1.5x40 GM P/N 11519182, or equivalent bolts to install the EN 46114 engine lift brackets to the left rear and right front cylinder heads.
^ Tighten the lift bracket bolts to 65 Nm (48 ft. lbs.).
43. Use an engine hoist in order to separate the engine from the transmission and the frame.
44. Install the engine to a suitable engine stand.
45. Refer to the appropriate service information in order to remove the necessary components from the engine.
Installation Procedure
1. Refer to the appropriate service information in order to install the necessary components to the engine.
2. Use an engine hoist in order to remove the engine from the engine stand.
3. Install the engine to the transmission and the frame at the powertrain lift table.
4. Remove the EN 46114 engine lift brackets.
5. Install the engine to transmission (bell housing) bolts.
Notice: Refer to Fastener Notice in Service Precautions.
6. Install the transmission upper brace nut located behind the power steering pump.
^ Tighten the transmission upper brace nut to 50 Nm (37 ft. lbs.).
7. Install the transmission lower brace.
8. Install the transfer case brace.
9. Install the power steering pump with the power steering pipe/hose.
10. Install the power steering reservoir and reposition to provide access.
11. Install the accessory drive belt.
12. Install the power steering pressure pipe/hose to the water outlet.
13. Install the coolant inlet pipe.
14. Install the exhaust crossover pipe.
15. Carefully lower the vehicle or raise the powertrain table in order to install the powertrain to the vehicle.
16. Install the frame bolts.
17. Raise the vehicle and remove the powertrain lift table.
18. Install the transmission mount lower nuts.
19. Install the engine mount lower nuts.
Caution: Failure to disconnect the intermediate shaft from the rack and pinion steering gear stub shaft can result in damage to the steering gear and/or intermediate shaft. This damage may cause loss of steering control which could result in an accident and possible personal injury
20. Install the intermediate steering shaft to the steering gear.
21. Rotate the struts and install the drive axles to the transaxle.
22. Install the lower ball joints to the knuckles.
23. Install the tie rod ends to the steering knuckles.
24. Install the front wheel speed sensor wiring harnesses to the lower control arms and the frame.
25. Connect the VSS electrical connector and secure the wiring harness to the vehicle.
26. Install the engine splash shields.
27. Install lower radiator air baffle.
28. Install the front tires and wheels.
29. Install the catalytic converter.
30. If the vehicle is equipped with AWD, install rear propeller shaft.
31. Install the torque converter bolts as necessary.
32. Lower the vehicle.
33. Fill the engine oil as necessary.
34. Install the transmission electrical connector.
35. Connect the suction hose to the evaporator outlet pipe.
36. Connect the discharge hose to the condenser.
37. Recharge the air conditioning system.
38. Install the brake booster vacuum hose to the intake manifold.
39. Install the transmission ground wire and the bolt.
^ Tighten the transmission ground bolt 75 Nm (55 ft. lbs.).
40. Install the ECM chassis (outboard) side electrical connector to the ECM.
41. Connect the fuel pressure and EVAP pipes to the engine.
42. Install the engine mount struts.
43. Connect the heater hoses to the engine.
44. Connect the radiator hoses to the engine.
45. Fill the cooling system. Refer to Draining and Filling Cooling System.
46. Connect the battery positive cable to the generator and the starter.
47. Connect the battery negative cable to the engine block.
48. Install the throttle body air inlet duct.
49. Connect the battery negative cable to the battery.