GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Remove the lower intake manifold. Refer to Intake Manifold Replacement .

  2. Object Number: 343625  Size: SH
  3. Disconnect the spark plug wires from the distributor cap. Refer to Spark Plug Wire Harness Replacement in Engine Electrical.
  4. Remove the distributor cap.
  5. Remove the water pump inlet hose from the water pump. Refer to Radiator Hose Replacement in Engine Cooling.
  6. Remove the drive belt. Refer to Drive Belt Replacement .

  7. Object Number: 179249  Size: SH

    Important: It is not necessary to evacuate the A/C refrigerant.

  8. Remove the A/C compressor from the power steering bracket, if equipped, and set it aside. Refer to Air Conditioning Compressor Replacement in HVAC.
  9. Remove AIR check valve (crossover) pipe, if so equiped. Refer to Secondary Air Injection Check Valve and Check Valve Pipe Replacement in Engine Controls.

  10. Object Number: 179250  Size: SH
  11. Remove the wiring bracket from the rear of the cylinder head.
  12. Disconnect the accessory bracket and slide it forward. Refer to Accessory Mounting Brackets Replacement .
  13. Remove the exhaust manifold. Refer to Exhaust Manifold Replacement .
  14. Remove the valve rocker arms and pushrods. Refer to Valve Rocker Arm and Push Rod Removal .
  15. Remove the power steering pump. Refer to Accessory Mounting Brackets Replacement in Power Steering.
  16. Remove the power steering pump mounting bracket using the following procedure: Refer to Accessory Mounting Brackets Replacement in Steering.

  17. Object Number: 344131  Size: SH
  18. For the right side cylinder head, remove the following components:
  19. • Generator. Refer to Generator Replacement in Engine Electrical.
    • Oil indicator tube bracket bolt. Refer to Oil Level Indicator and Tube Replacement .
  20. Remove the generator and drive belt tensioner bracket. Refer to Accessory Mounting Brackets Replacement .

  21. Object Number: 11482  Size: SH
  22. Remove the sixteen cylinder head bolts.
  23. Remove the cylinder head and the gasket.
  24. Clean all sealing surfaces. Refer to Cylinder Head Clean and Inspect .

Installation Procedure

Tools Required
J 36660-A Torque Angle Meter


    Object Number: 11482  Size: SH
  1. Install the cylinder head. Refer to Cylinder Head Removal (Left) and Cylinder Head Removal (Right) .
  2. Install the valve rocker arms and the valve pushrods. Refer to Valve Rocker Arm and Push Rod Installation .
  3. Install the lower intake manifold. Refer to Intake Manifold Replacement .

  4. Object Number: 188295  Size: SH
  5. For the left side cylinder head, install the power steering pump mounting bracket. Refer to Accessory Mounting Brackets Replacement .
  6. For the right side cylinder head, install the generator mounting bracket. Refer to Accessory Mounting Brackets Replacement .:
  7. Install the generator. Refer to Generator Replacement in Engine Electrical.
  8. Oil indicator tube bracket bolt. Refer to Oil Level Indicator and Tube Replacement .
  9. Install the exhaust manifold. Refer to Exhaust Manifold Replacement .
  10. Install the valve rocker arm covers. Refer to Valve Rocker Arm Cover Replacement .
  11. Install the wiring bracket to the rear of the cylinder head.
  12. Connect the accessory bracket.
  13. Install the A/C compressor, if equipped. Refer to Air Conditioning Compressor Replacement in HVAC.
  14. Install the drive belt. Refer to Drive Belt Replacement .

  15. Object Number: 344232  Size: SH
  16. Install the distributor cap.
  17. Connect the spark plug wires to the distributor cap. Refer to Spark Plug Wire Harness Replacement in Engine Electrical.
  18. Install both heater hoses. Refer to Heater Hoses Replacement in HVAC.
  19. Install the upper radiator hose. Refer to Heater Hoses Replacement in Engine Cooling.
  20. Install the air cleaner assembly.
  21. Refill the cooling system. Refer to Cooling System Draining and Filling .