GM Service Manual Online
For 1990-2009 cars only

Cylinder Head Replacement Left Side

Removal Procedure

  1. Disconnect the battery negative cable. Refer to Battery Replacement .
  2. Drain the engine coolant. Refer to Cooling System Draining and Filling .
  3. Remove the air cleaner outlet duct from the throttle body. Refer to Intake Air Resonator Replacement .
  4. Remove the A/C hose from the accumulator and the A/C compressor and move aside, if equipped. Refer to Compressor Hose Assembly Replacement .
  5. Disconnect the wire connectors to the A/C compressor, if equipped.
  6. The A/C compressor can be left on the power steering pump mounting bracket.


    Object Number: 466740  Size: SH
  7. Remove the engine wiring harness from the accelerator control cable bracket.
  8. Remove the bolt and the accelerator control cable bracket from the power steering pump mounting bracket.
  9. Leave the accelerator control cable and the cruise control cable on the bracket.


    Object Number: 288829  Size: SH
  10. Remove the upper fan shroud. Refer to Engine Coolant Fan Shroud Replacement .
  11. Remove the engine cooling fan. Refer to Fan Clutch Replacement .
  12. Remove the drive belt. Refer to Drive Belt Replacement .
  13. Remove the power steering pump pulley. Refer to Power Steering Pump Replacement .
  14. Remove the bolts holding the power steering pump to the power steering pump mounting bracket.
  15. The power steering pump can remain on the engine.


    Object Number: 188295  Size: SH
  16. Remove the three bolts and nut holding the power steering pump mounting bracket to the engine.
  17. Slide the power steering pump mounting bracket off of the stud and the power steering pump.
  18. Remove the power steering pump mounting bracket stud from the cylinder head.
  19. Remove the intake manifold. Refer to Intake Manifold Replacement .
  20. Remove the exhaust manifold. Refer to Exhaust Manifold Replacement .
  21. Remove the valve pushrods. Refer to Valve Rocker Arm and Push Rod Replacement .

  22. Object Number: 5130  Size: SH
  23. Remove and discard the cylinder head bolts.
  24. Remove the cylinder head.
  25. Clean all surfaces. Refer to Cylinder Head Cleaning and Inspection .

Installation Procedure


    Object Number: 5129  Size: SH
  1. Install the cylinder head. Refer to Cylinder Head Installation .
  2. Install the valve pushrods. Refer to Valve Rocker Arm and Push Rod Replacement .
  3. Install the exhaust manifold. Refer to Exhaust Manifold Replacement .
  4. Install the intake manifold. Refer to Intake Manifold Replacement .
  5. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 188295  Size: SH
  6. Install the power steering pump mounting bracket stud in the cylinder head.
  7. Tighten
    Tighten the power steering pump mounting bracket stud to 20 N·m (15 lb ft).

  8. Slide the power steering pump mounting bracket onto the stud and the power steering pump.
  9. Install the three bolts and the nut for the power steering pump mounting bracket.
  10. Tighten
    Tighten the power steering pump mounting bracket bolts and nut to 41 N·m (30 lb ft).


    Object Number: 288829  Size: SH
  11. Install the three bolts holding the power steering pump to the power steering pump mounting bracket.
  12. Tighten
    Tighten the power steering pump bolts to 50 N·m (37 lb ft).

  13. Install the power steering pump pulley. Refer to Power Steering Pump Replacement .
  14. Install the drive belt. Refer to Drive Belt Replacement .
  15. Install the engine cooling fan. Refer to Fan Clutch Replacement .
  16. Install the upper fan shroud. Refer to Engine Coolant Fan Shroud Replacement .

  17. Object Number: 466740  Size: SH
  18. Install the accelerator control cable to the power steering pump mounting bracket.
  19. Tighten
    Tighten the accelerator control cable bolt to 17 N·m (13 lb ft).

  20. Install the engine wiring harness to the accelerator control cable bracket.
  21. Install the A/C hose to the accumulator and the A/C compressor, if equipped. Refer to Compressor Hose Assembly Replacement .
  22. Fill the engine coolant system. Refer to Cooling System Draining and Filling .
  23. Connect the battery negative cable. Refer to Battery Replacement .
  24. Install the air cleaner outlet duct onto the throttle body. Refer to Intake Air Resonator Replacement .

Cylinder Head Replacement Right Side

Removal Procedure

  1. Disconnect the battery negative cable. Refer to Battery Replacement .
  2. Drain the engine coolant. Refer to Cooling System Draining and Filling .
  3. Remove the air cleaner outlet duct from the throttle body. Refer to Intake Air Resonator Replacement .
  4. Remove the engine cooling fan assembly. Refer to Fan Clutch Replacement .
  5. Remove the intake manifold. Refer to Intake Manifold Replacement .

  6. Object Number: 466730  Size: SH
  7. Disconnect the wires from the generator.
  8. Remove the bolt and the HVAC hose bracket from the generator mounting bracket.
  9. Remove the drive belt tensioner. Refer to Drive Belt Tensioner Replacement .

  10. Object Number: 196643  Size: SH
  11. Remove the generator mounting bracket two bolts and nut.
  12. The generator can remain on the generator mounting bracket.

  13. Remove the generator mounting bracket.
  14. Remove the generator mounting bracket stud from the cylinder head.
  15. Remove the exhaust manifold. Refer to Exhaust Manifold Replacement .
  16. Remove the valve pushrods. Refer to Valve Rocker Arm and Push Rod Replacement .

  17. Object Number: 334309  Size: SH
  18. Remove and discard the cylinder head bolts.
  19. Remove the cylinder head.
  20. Clean all surfaces. Refer to Cylinder Head Cleaning and Inspection .

Installation Procedure


    Object Number: 334309  Size: SH
  1. Install the cylinder head. Refer to Cylinder Head Installation .
  2. Install the valve pushrods. Refer to Valve Rocker Arm and Push Rod Replacement .
  3. Install the exhaust manifold. Refer to Exhaust Manifold Replacement .
  4. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 196643  Size: SH
  5. Install the generator mounting bracket stud to the cylinder head.
  6. Tighten
    Tighten the stud to 20  N·m (15 lb ft).

  7. Install the generator mounting bracket.
  8. Install the generator mounting bracket two bolts and the nut.
  9. Tighten
    Tighten the generator mounting bracket two bolts and the nut to 41 N·m (30 lb ft).

  10. Install the drive belt tensioner. Refer to Drive Belt Tensioner Replacement .

  11. Object Number: 466730  Size: SH
  12. Install the bolt and the HVAC hose bracket to the generator mounting bracket.
  13. Tighten
    Tighten the HVAC hose bracket bolt to 30 N·m (22 lb ft).

  14. Connect the wires to the generator.
  15. Install the intake manifold. Refer to Intake Manifold Replacement .
  16. Install the engine cooling fan. Refer to Fan Clutch Replacement .
  17. Install the air cleaner outlet duct onto the throttle body. Refer to Intake Air Resonator Replacement .
  18. Fill the engine coolant system. Refer to Cooling System Draining and Filling .
  19. Connect the battery negative cable. Refer to Battery Replacement .