Tools Required

J 41427 Engine Lift Bracket

1. Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
2. Drain the engine coolant. Refer to Cooling System Draining and Filling in Engine Cooling.
3. Evacuate and recover the A/C refrigerant, if equipped. Refer to Refrigerant Recovery and Recharging in Heating Ventilation and Air Conditioning.
4. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
5. Remove the oil pan skid plate (RWD shown).
6. Remove the engine shield, if equipped. Refer to Engine Protection Shield Replacement in Frame and Underbody.
7. Remove the starter. Refer to Starter Motor Replacement in Engine Electrical.



8. Remove the transmission cover.



9. Remove the bolt holding the bracket for the starter cables and transmission cooler lines, if equipped.



10. Loosen the nuts (2) at the catalytic converter pipe.
11. Remove the exhaust pipes from the exhaust manifolds. Refer to Catalytic Converter Replacement in Engine Exhaust.



12. Remove the bolts holding the brackets to the oil pan for both battery cables.



13. Disconnect the crankshaft position (CKP) sensor electrical connector (2) and remove the harness from the retainer.
14. Disconnect the low oil level sensor electrical connector (3) and remove the wire harness from the retainer.
15. Remove the bolt holding the battery negative cable (1) and a ground cable (1) to the engine.



16. Remove the torque converter to flywheel bolts, if equipped, through the starter opening.
17. Remove the engine to transmission bolts.

•	Refer to Transmission Replacement in Automatic Transmission - 4L60-E.

•	Refer to Transmission Replacement in Manual Transmission - NV3500.

18. Lower the vehicle.



19. Move the hood hinge bolts (1) to hold the hood in the service position (2).



20. Separate the MAF/IAT sensor assembly and the air inlet tube by loosening the hose clamp.
21. Disconnect the PCV hose from the air cleaner outlet duct.



22. Remove the air inlet tube and resonator retaining wing nut.



23. Remove the air inlet tube and resonator from the throttle body by pivoting the air inlet tube and resonator upward until the hinge clip releases from the lip on the throttle body.
24. Remove the upper and lower fan shrouds. Refer to Engine Coolant Fan Upper Shroud Replacement and Engine Coolant Fan Lower Shroud Replacement in Engine Cooling.
25. Remove the drive belt. Refer to Drive Belt Replacement .
26. Remove the engine cooling fan. Refer to Fan Clutch Replacement in Engine Cooling.
27. Remove the radiator inlet hose from the engine. Refer to Radiator Inlet Hose Replacement in Engine Cooling.
28. Remove the radiator outlet hose from the engine. Refer to Radiator Outlet Hose Replacement in Engine Cooling.




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 cable routing bracket.



30. Remove the accelerator cable from the throttle body lever.
31. Disconnect the cruise control cable, if equipped from the throttle shaft and the accelerator cable bracket at the side of the throttle body. Refer to Cruise Control Cable Replacement in Cruise Control.



32. Remove the engine wiring harness clip from the accelerator control cable bracket.
33. Remove the accelerator control cable bracket with the accelerator control cable and the cruise control cable from the throttle body.
34. Move and secure the accelerator control cable and the cruise control cable out of the way.
35. Disconnect the A/C hoses from the compressor and the accumulator, if equipped. Refer to Compressor Hose Assembly Replacement in Heating Ventilation and Air Conditioning.



36. Remove the secondary air injection (AIR) crossover pipe from the AIR pipe assemblies.




Notice: Remove the AIR pipes before engine removal. The AIR pipes can break or damage easily causing erratic engine operation.

37. Remove AIR pipe assemblies from the left exhaust manifold, if equipped.



38. Disconnect the AIR pipe assembly from the AIR pump.
39. Remove the AIR pipe assembly from the right exhaust manifold, if equipped.



40. 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)

•	The generator battery positive cable (3)




41. Disconnect the following electrical connectors:

•	The fuel meter body assembly (3)

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

•	The throttle position (TP) sensor (1)

•	The engine coolant temperature (ECT) sensor (4)




42. Disconnect the following electrical connectors:

•	The EVAP canister purge solenoid valve (1)

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

•	The ignition control module (ICM) (4)

•	The ignition coil (3)




43. Disconnect the following electrical connectors:

•	The engine oil pressure gauge sensor (3)

•	The distributor (2)

•	The knock sensor (KS) (1)




44. Remove the nuts holding the bracket for the engine wiring harness to the intake manifold studs.
45. Remove the bolt holding the engine wiring harness clip to the battery positive cable junction block bracket.



46. Remove the bracket for the battery positive cable junction block from the power steering pump mounting bracket.



47. Move the battery positive and negative cables aside.



48. Remove the nut holding the ground wire to the stud at the rear of the right cylinder head.
49. Remove the stud holding the engine wiring harness bracket to the rear of the right cylinder head.
50. Remove the nut holding the engine wiring harness bracket to the stud for the EVAP canister purge solenoid valve.



51. Remove the bolt holding the ground strap and the ground wire to the rear of the left cylinder head.
52. Move the engine wiring harness aside.
53. Remove both heater hoses from the engine and the cowl. Refer to Heater Inlet Hose Replacement and Heater Outlet Hose Replacement in Heating Ventilation and Air Conditioning.
54. Remove the distributor cap. Refer to Distributor Replacement in Engine Controls - 4.3L.
55. Disconnect the fuel pipes at the rear of the engine. Refer to Fuel Hose/Pipes Replacement - Engine Compartment in Engine Controls - 4.3L.
56. Disconnect the hose to the EVAP purge canister solenoid valve. Refer to Evaporative Emission Canister Purge Solenoid Valve Replacement in Engine Controls - 4.3L.



57. Disconnect the power brake booster vacuum hose from the engine and the vacuum brake booster.



58. Loosen the nut holding the power steering pump rear bracket to the side of the engine.
59. Remove the nut holding the power steering pump rear bracket to the front of the engine
60. Remove the three bolts and the nut holding the power steering pump mounting bracket to the engine.
61. With the power steering pump and the A/C compressor still attached, slide the power steering pump mount bracket off of the stud and set aside.
62. Remove the water outlet. Refer to Engine Coolant Thermostat Replacement in Engine Cooling.



63. Remove the EGR valve inlet pipe from the intake and exhaust manifold.




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.

64. Attach the J 41427 to the left front and right rear intake manifold mounting bolts, using the following procedure:

64.1.

Remove the right rear lower intake manifold bolts.

64.2.

Install the J 41427 marked RIGHT REAR.

64.3.

Install the retaining bolts.

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

64.4.

Remove the left front lower intake manifold bolts.

64.5.

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

64.6.

Install the retaining bolts.

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

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



66. Remove the engine motor mount to frame bracket bolts.
67. Support the transmission with a suitable jack.
68. Remove the engine.

1. Install the engine to the vehicle.

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 frame bracket bolts.

Tighten
Tighten the bolts to 65 N·m (50 lb ft).




3. Remove the J 41427 and the lifting device.
4. Apply thread lock GM P/N 12345382 or equivalent to the threads of the lower intake manifold bolts.
5. Install the intake manifold bolts.

Tighten

1. Tighten the bolts the first pass to 3 N·m (27 lb in).
2. Tighten the bolts the second pass to 12 N·m (106 lb in).
3. Tighten the bolts the final pass to 15 N·m (11 lb ft).
6. Loosely install one transmission to engine bolt.
7. Remove the support jack from under the transmission.



8. Install the EGR valve inlet pipe to the intake and the exhaust manifold.

Tighten

1. Tighten the EGR valve inlet pipe intake nut to 25 N·m (18 lb ft).
2. Tighten the EGR valve inlet pipe exhaust nut to 30 N·m (22 lb ft).
3. Tighten the EGR valve inlet pipe clamp bolt to 25 N·m (18 lb ft).
9. Install the water outlet. Refer to Engine Coolant Thermostat Replacement in Engine Cooling.



10. Slide the power steering pump mounting bracket with the power steering pump and the A/C compressor on the stud.
11. Position the power steering pump rear bracket on the studs.
12. Install the power steering pump mounting bracket three bolts and the nut.
13. Install the nut for the power steering pump rear bracket to the front of the engine.

Tighten
Tighten the power steering pump mounting bracket and the power steering pump rear bracket bolts and the nuts to 41 N·m (30 lb ft).

14. Connect the fuel pipes. Refer to Fuel Hose/Pipes Replacement - Engine Compartment in Engine Controls - 4.3L.
15. Connect the hose to the EVAP purge canister solenoid valve. Refer to Evaporative Emission Canister Purge Solenoid Valve Replacement in Engine Controls - 4.3L.



16. Connect the vacuum brake booster hose to engine and the vacuum brake booster.
17. Install the distributor cap. Refer to Distributor Replacement in Engine Controls - 4.3L.
18. Install both heater hoses to the engine and the cowl. Refer to Heater Inlet Hose Replacement and Heater Outlet Hose Replacement in Heating Ventilation and Air Conditioning.



19. Install the AIR pipe assembly with new gaskets to the right exhaust manifold, if equipped.
20. Install the AIR pipe nuts and bracket bolt.

Tighten

1. Tighten the AIR nuts to 25 N·m (18 lb ft).
2. Tighten the AIR bracket bolt to 10 N·m (8 lb ft).
21. Connect the AIR pipe assembly to the AIR pump.



22. Install the AIR pipe assembly with new gaskets to the left exhaust manifold, if equipped.
23. Install the AIR pipe nuts and bracket bolt.

Tighten

1. Tighten the AIR nuts to 25 N·m (18 lb ft).
2. Tighten the AIR bracket bolt to 10 N·m (89 lb in).



24. Install the AIR crossover pipe to the AIR pipe assemblies.
25. Position the engine wiring harness.



26. Connect 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)

•	The generator battery positive cable (3)




27. Connect the following electrical connectors:

•	The fuel meter body assembly (3)

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

•	The throttle position (TP) sensor (1)

•	The engine coolant temperature (ECT) sensor (4)




28. Connect the following electrical connectors:

•	The EVAP canister purge solenoid valve (1)

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

•	The ignition control module (ICM) (4)

•	The ignition coil (3)




29. Connect the following electrical connectors:

•	The engine oil pressure gauge sensor (3)

•	The distributor (2)

•	The knock sensor (KS) (1)




30. Install the bolt holding the ground strap and the ground wire to the rear of the left cylinder head.

Tighten
Tighten the ground strap and ground wire bolt to 16 N·m (12 lb ft).




31. Position the engine wiring harness bracket on the EVAP canister purge solenoid valve stud and install the nut.
32. Install the stud holding the wire harness bracket to the rear of the right cylinder head.

Tighten

•	Tighten the nut on the EVAP solenoid to 9 N·m (80 lb in).

•	Tighten the stud at rear of the cylinder head to 25 N·m (18 lb ft).

33. Install the nut holding the ground wire on the stud at the rear of the right cylinder head.

Tighten
Tighten the ground wire nut to 16 N·m (12 lb ft).




34. Position the battery positive and negative cables.

Do not connect the negative battery cable to the battery.

35. Install the battery positive cable junction block bracket and bolt to the power steering pump mounting bracket.

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




36. Install the bolt holding the engine wiring harness bracket to battery positive cable junction block bracket.
37. Install the engine wiring harness bracket on the intake manifold studs and install the nuts.

Tighten

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

•	Tighten the wiring harness bracket bolt to 9 N·m (80 lb ft).

38. Connect the A/C hoses to the A/C compressor and the accumulator. Refer to Compressor Hose Assembly Replacement in Heating Ventilation and Air Conditioning.




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.
39. Install the accelerator control cable bracket with the accelerator control cable and the cruise control cable and the nuts to the throttle body.

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

40. Install the engine wiring harness clip to the accelerator control cable bracket.
41. Install the cruise control cable, if equipped to the throttle shaft and the accelerator control cable bracket. Refer to Cruise Control Cable Replacement in Cruise Control.



42. Install the accelerator cable to the engine cable bracket.



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



44. Install the accelerator cable to the cable routing bracket.
45. Install the radiator inlet hose. Refer to Radiator Inlet Hose Replacement in Engine Cooling.
46. Install the radiator outlet hose. Refer to Radiator Outlet Hose Replacement in Engine Cooling.
47. Install the engine cooling fan. Refer to Fan Clutch Replacement in Engine Cooling.
48. Install the drive belt. Refer to Drive Belt Replacement .
49. Install the upper and lower radiator shrouds. Refer to Engine Coolant Fan Upper Shroud Replacement and Engine Coolant Fan Lower Shroud Replacement in Engine Cooling.



50. Align the hinge clip with the lip on the throttle body.

Install the air inlet tube and resonator to the throttle body by pivoting the air inlet tube and resonator downward until the mounting stud is through the hole in the air inlet tube.




51. Install the resonator retaining wing nut.
52. Connect the PCV hose to the air cleaner outlet duct.



53. Connect the MAF/IAT sensor assembly harness connector.



54. Move the hood hinge bolts from the service position (2) to the normal operating position (1).
55. Raise the vehicle.
56. Install the remaining transmission to engine bolts except for the one where the transmission cover mounts.

•	Refer to Transmission Replacement in Automatic Transmission - 4L60-E.

•	Refer to Transmission Replacement in Manual Transmission - NV3500.

57. Install the torque convertor to flywheel bolts, if equipped. Refer to Flywheel to Torque Converter Bolt Replacement in Automatic Transmission - 4L60-E.



58. Install the transmission cover and bolts.

Tighten

1. Tighten the transmission cover to oil pan bolt to 47 N·m (34 lb ft).
2. Tighten the transmission cover to transmission bolt to 12 N·m (106 lb in).



59. Install the bolt holding the bracket for the starter cables and the transmission cooler pipes, if equipped.

Tighten
Tighten the bracket bolt to 9 N·m (80 lb in).




60. Install the bolts holding the positive and negative battery cable brackets to the oil pan.

Tighten
Tighten the bracket bolts to 12 N·m (106 lb in).




61. Install the bolt for the battery negative cable (1) and ground wire (1) to the front of the engine.

Tighten
Tighten the battery negative cable and ground wire bolt to 25 N·m (18 lb ft).

62. Connect the CKP sensor (2) and install the harness in the retainer.
63. Connect the low oil level sensor (3) and install the wire harness in the retainer.
64. Install the exhaust pipe to the exhaust manifolds and tighten the nuts at the catalytic converter flange. Refer to Catalytic Converter Replacement in Engine Exhaust.
65. Install the starter motor. Refer to Starter Motor Replacement in Engine Electrical.



66. Install the oil pan skid plate (RWD shown).

Tighten
Tighten the oil pan skid plate bolt to 20 N·m (15 lb ft).

67. Install the engine shield. Refer to Engine Protection Shield Replacement in Frame and Underbody.
68. Lower the vehicle.
69. Connect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
70. Fill the engine with the proper quantity and grade of engine oil. Refer to Engine Oil and Oil Filter Replacement .
71. Add engine oil supplement GM P/N 1052367 or equivalent to the engine oil.
72. Fill the engine with coolant. Refer to Cooling System Draining and Filling in Engine Cooling.
73. Recharge the A/C system. Refer to Refrigerant Recovery and Recharging in Heating Ventilation and Air Conditioning.
74. With the ignition OFF or disconnected, crank the engine several times. Listen for any unusual noises or evidence that any of the parts are binding.
75. Start the engine and listen for unusual noises.
76. 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 engine oil pressure.

77. Operate the engine at about 1,000 RPM until the engine has reached normal operating temperature.
78. Listen for improperly adjusted or sticking valves, sticking valve lifters, or other unusual noises.
79. Inspect for oil and/or coolant leaks while the engine is operating.
80. Verify that the distributor is properly positioned.
81. Perform a final inspection for the proper engine oil and coolant levels.