Tools Required

J 41427 Engine Lift Brackets

1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
2. Drain the cooling system. Refer to Cooling System Draining and Filling in Engine Cooling.
3. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
4. If equipped, remove the oil pan skid plate bolts and plate.
5. Remove the engine shield, if equipped. Refer to Engine Protection Shield Replacement in Frame and Underbody.
6. Remove the starter. Refer to Starter Motor Replacement in Engine Electrical.



7. Remove the transmission cover.



8. Remove the transmission oil cooler line bracket bolt, if equipped.
9. Remove the catalytic converter. Refer to Catalytic Converter Replacement in Engine Exhaust.



10. Remove the battery cable bracket bolts.



11. Disconnect the low oil level sensor electrical connector (7).
12. Disconnect the crankshaft position (CKP) sensor electrical connector (5) and remove the harness from the retainer clip.
13. Remove the ground bolt (3) holding the battery negative cable and a ground cable to the engine.



14. Remove the torque converter bolts, if equipped, through the starter opening.
15. Remove the transmission bolts.
16. Lower the vehicle.



17. Raise the hood to the service position, perform the following:

17.1.

Remove the hood hinge bolts (1).

17.2.

Raise the hood until vertical.

17.3.

Install the hood hinge bolts until snug in the service position (2).

18. Remove the fuel pipes/hoses. Refer to Fuel Hose/Pipes Replacement - Engine Compartment in Engine Controls - 4.3L.
19. Remove the lower fan shroud. Refer to Engine Coolant Fan Lower Shroud Replacement in Engine Cooling.
20. Remove the drive belt. Refer to Drive Belt Replacement .



21. Reposition the radiator inlet hose clamp.
22. Remove the radiator inlet hose from the thermostat housing.



23. Reposition the radiator outlet hose clamps.
24. Remove the radiator outlet hose from the surge tank.
25. Remove the radiator outlet hose from the water pump.



26. Disconnect the cruise control cable from the throttle lever, if equipped.
27. Remove the cruise control cable from the accelerator control cable bracket, if equipped.



28. Remove the accelerator cable from the throttle body lever.




Caution: In order to avoid possible injury or vehicle damage, always replace the accelerator control cable with a NEW cable whenever you remove the engine from the vehicle.

In order to avoid cruise control cable damage, position the cable out of the way while you remove or install the engine. Do not pry or lean against the cruise control cable and do not kink the cable. You must replace a damaged cable.
29. Remove the accelerator cable from the accelerator control cable bracket.



30. Remove the accelerator cable from the throttle body lever.



31. Remove the accelerator control cable bracket nuts
32. Remove the accelerator control cable bracket with the cables attached, from the throttle body.
33. Reposition and secure the bracket and cables out of the way.
34. Remove the air conditioning (A/C) compressor hose, if equipped. Refer to Compressor Hose Assembly Replacement in Heating, Ventilation, and Air Conditioning.



35. Disconnect the following electrical connectors:

•	The A/C pressure switch (4), if equipped

•	The A/C compressor clutch (1), if equipped

•	The exhaust gas recirculation (EGR) valve (2)

36. Remove the positive cable nut and cable from the generator.



37. Disconnect the following electrical connectors:

•	The throttle position (TP) sensor (1)

•	The idle air control (IAC) motor (2)

•	The control port injector module (3)

•	The engine coolant temperature (ECT) sensor (5)

38. Remove the engine wiring harness clip bolt (4).



39. Disconnect the following electrical connectors:

•	The evaporative emission (EVAP) canister purge solenoid valve (1)

•	The manifold absolute pressure (MAP) sensor (2)




40. Disconnect the following electrical connectors:

•	The ignition coil (1)

•	The ignition coil driver (2)

•	The generator (3)

41. Remove the engine wiring harness ground nut and ground wire (4) from the rear of the right cylinder head.



42. Disconnect the following electrical connectors:

•	The knock sensor (KS) (1)

•	The camshaft position (CMP) sensor (2)

•	The fuel pump/oil pressure sensor (3)

•	The distributor (2)

43. Remove the harness ground bolt.
44. Reposition the harness ground (4) and ground strap (5).



45. Remove the engine wiring harness bracket nuts.
46. Remove the engine wiring harness bracket from the studs.



47. Remove the junction block bracket bolt.
48. Reposition the bracket and wiring harness aside.



49. Remove the engine wiring harness rear bracket nut at the EVAP canister purge solenoid valve.
50. Remove the stud holding the engine wiring harness bracket.
51. Reposition the engine wiring harness with the bracket aside.
52. Remove the heater hoses. Refer to Heater Inlet Hose Replacement and Heater Outlet Hose Replacement in Heating, Ventilation, and Air Conditioning.
53. Remove the distributor cap. Refer to Distributor Replacement in Engine Controls - 4.3L.



54. Disconnect the EVAP canister harness from the purge solenoid valve.



55. Disconnect the power brake booster vacuum hose from the vacuum fitting (1).



56. Loosen the power steering (P/S) pump rear bracket nut.
57. Remove the P/S pump rear bracket front nut.
58. Remove the bolts and the nut for the P/S pump bracket.
59. Leave the A/C compressor, if equipped and the P/S pump on the bracket.
60. Slide the P/S pump bracket off the stud and set aside.
61. Remove the thermostat and water outlet. Refer to Engine Coolant Thermostat Replacement in Engine Cooling.



62. Remove the spark plug wire harness retainer from the EGR valve inlet pipe.



63. Remove the EGR valve inlet pipe bracket bolt.
64. Remove the EGR valve inlet pipe.



65. Remove the left front and right rear intake manifold - lower bolts.
66. Install J 41427 to the left front and right rear intake manifold bolts, using the following procedure:

66.1.

Install the J 41427 marked RIGHT REAR.

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.

66.2.

Install the lift bracket retaining bolts.

Tighten
Tighten the lift bracket bolts to 15 N·m (11 lb ft).

66.3.

Install the J 41427 marked LEFT FRONT with the arrow pointing to the front of the engine.

66.4.

Install the lift bracket retaining bolts.

Tighten
Tighten the lift bracket bolts to 15 N·m (11 lb ft).

67. Attach a suitable lifting device to the engine lift brackets.



68. Remove the engine mount to engine mount bracket bolts.
69. Support the transmission with a suitable floor jack.
70. Remove the engine.

1. Install the engine.

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.

2. Install the engine mount to engine mount bracket bolts.

Tighten
Tighten the engine mount to engine mount bracket bolts to 65 N·m (48 lb ft).




3. Remove the J 41427 and the lifting device.
4. Apply threadlock GM U.S. P/N 12345382, Canada P/N 10953489, or equivalent to the threads of the intake manifold - lower bolts.
5. Install the intake manifold bolts.

Tighten

1. Tighten the intake manifold - lower bolts a first pass to 3 N·m (27 lb in).
2. Tighten the intake manifold - lower bolts a second pass to 12 N·m (106 lb in).
3. Tighten the intake manifold - lower bolts a final pass to 15 N·m (11 lb ft).
6. Install one transmission bolt until snug.
7. Remove the support jack from under the transmission.



8. Install the EGR valve inlet pipe.
9. Install the EGR valve inlet pipe bracket bolt.

Tighten

•	Tighten the EGR valve inlet pipe fitting to the exhaust manifold to 25 N·m (18 lb ft).

•	Tighten the EGR valve inlet pipe fitting to the intake manifold to 30 N·m (22 lb ft).

•	Tighten the EGR valve inlet pipe bracket bolt to 25 N·m (18 lb ft).




10. Install the spark plug wire harness retainer to the EGR valve inlet pipe.
11. Install the thermostat and water outlet. Refer to Engine Coolant Thermostat Replacement in Engine Cooling.



12. Slide the P/S pump bracket onto the stud.
13. Install the bolts and the nut for the P/S pump bracket.
14. Install the P/S pump rear bracket front nut.
15. Tighten the P/S pump rear bracket nut.

Tighten
Tighten the P/S pump bracket bolts and nuts to 41 N·m (30 lb ft).




16. Connect the power brake booster vacuum hose to the vacuum fitting (1).



17. Connect the EVAP canister harness to the purge solenoid valve.
18. Install the distributor cap. Refer to Distributor Replacement in Engine Controls - 4.3L.
19. Install the heater hoses. Refer to Heater Inlet Hose Replacement and Heater Outlet Hose Replacement in Heating, Ventilation, and Air Conditioning.



20. Position the engine wiring harness.
21. Install the stud holding the engine wiring harness bracket.
22. Install the engine wiring harness rear bracket nut at the EVAP canister purge solenoid valve.

Tighten
Tighten the engine wiring harness rear bracket nut to 9 N·m (80 lb in).




23. Position the bracket and wiring harness.
24. Install the junction block bracket bolt.

Tighten
Tighten the junction block bracket bolt to 25 N·m (18 lb ft).




25. Install the engine wiring harness bracket to the studs.
26. Install the engine wiring harness bracket nuts.

Tighten
Tighten the engine wiring harness bracket nuts to 12 N·m (106 lb in).




27. Position the harness ground (4) and ground strap (5).
28. Install the harness ground bolt.

Tighten
Tighten the harness ground bolt to 16 N·m (12 lb ft).

29. Connect the following electrical connectors:

•	The KS (1)

•	The CMP sensor (2)

•	The fuel pump/oil pressure sensor (3)

•	The distributor (2)




30. Install the engine wiring harness ground nut and ground wire (4) to the rear of the right cylinder head.

Tighten
Tighten the engine wiring harness ground nut to 16 N·m (12 lb ft).

31. Connect the following electrical connectors:

•	The ignition coil (1)

•	The ignition coil driver (2)

•	The generator (3)




32. Connect the following electrical connectors:

•	The EVAP canister purge solenoid valve (1)

•	The MAP sensor (2)




33. Install the engine wiring harness clip bolt (4).

Tighten
Tighten the engine wiring harness clip bolt to 9 N·m (80 lb in).

34. Connect the following electrical connectors:

•	The TP sensor (1)

•	The IAC motor (2)

•	The control port injector module (3)

•	The ECT sensor (5)




35. Install the positive cable and nut to the generator.

Tighten
Tighten the positive cable generator nut to 18 N·m (13 lb ft).

36. Connect the following electrical connectors:

•	The A/C pressure switch (4), if equipped

•	The A/C compressor clutch (1), if equipped

•	The EGR valve (2)

37. Install the A/C compressor hose, if equipped. Refer to Compressor Hose Assembly Replacement in Heating, Ventilation, and Air Conditioning.



38. Position the bracket and cables.
39. Install the accelerator control cable bracket with the cables attached, to the throttle body.
40. Install the accelerator control cable bracket nuts.

Tighten
Tighten the accelerator control cable bracket nuts to 9 N·m (80 lb in).




41. Install the accelerator cable to the throttle body lever.




Caution: In order to avoid possible injury or vehicle damage, always replace the accelerator control cable with a NEW cable whenever you remove the engine from the vehicle.

In order to avoid cruise control cable damage, position the cable out of the way while you remove or install the engine. Do not pry or lean against the cruise control cable and do not kink the cable. You must replace a damaged cable.
42. Install the accelerator cable to the accelerator control cable bracket.



43. Install the accelerator cable to the throttle body lever.



44. Install the cruise control cable to the accelerator control cable bracket, if equipped.
45. Connect the cruise control cable to the throttle lever, if equipped.



46. Install the radiator outlet hose to the water pump.
47. Install the radiator outlet hose to the surge tank.
48. Position the radiator outlet hose clamps.



49. Install the radiator inlet hose to the thermostat housing.
50. Position the radiator inlet hose clamp.
51. Install the drive belt. Refer to Drive Belt Replacement .
52. Install the lower fan shroud. Refer to Engine Coolant Fan Lower Shroud Replacement in Engine Cooling.
53. Install the fuel pipes/hoses. Refer to Fuel Hose/Pipes Replacement - Engine Compartment in Engine Controls - 4.3L.



54. Remove the hood hinge bolts from the service position (2).
55. Lower the hood to the normal position.
56. Install the hood hinge bolts.

Tighten
Tighten the hood hinge bolts to 25 N·m (18 lb ft).

57. Raise the vehicle.



58. Install the transmission bolts.

Tighten
Tighten the transmission bolts to 50 N·m (37 lb ft).

59. Install the torque converter bolts, if equipped, through the starter opening.

Tighten
Tighten the torque converter bolts to 63 N·m (47 lb ft).




60. Install the transmission cover.
61. Install the starter. Refer to Starter Motor Replacement in Engine Electrical.
62. Install the engine shield, if equipped. Refer to Engine Protection Shield Replacement in Frame and Underbody.



63. If equipped, install the oil pan skid plate and bolts.
64. Lower the vehicle.
65. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
66. Fill the engine with the proper quantity and grade of oil. Refer to Approximate Fluid Capacities in Maintenance and Lubrication.
67. Add engine oil supplement GM U.S. P/N 1052367, Canada P/N 992869, or equivalent to the engine oil.
68. Fill the cooling system. Refer to Cooling System Draining and Filling in Engine Cooling.
69. Bleed the hydraulic clutch, if equipped. Refer to Hydraulic Clutch Bleeding in Clutch.
70. Recharge the A/C system. Refer to Refrigerant Recovery and Recharging in Heating, Ventilation, and Air Conditioning.

Important: After an overhaul, the engine should be tested. Use the following procedure after the engine is installed in the vehicle.

71. Disable the ignition system.
72. Crank the engine several times. Listen for any unusual noises or evidence that parts are binding.
73. Start the engine and listen for unusual noises.
74. Check the oil pressure gauge or light and confirm that the engine has acceptable oil pressure.
75. If necessary, install an oil pressure gauge and measure the oil pressure.
76. Run the engine speed at about 1000 RPM until the engine has reached normal operating temperature.
77. Listen for sticking valve lifters, or other unusual noises.
78. Inspect for fuel, oil, and/or coolant leaks while the engine is running.
79. Verify that the distributor is properly positioned.
80. Perform a final inspection for the proper oil and coolant levels.
81. Close the hood.