GM Service Manual Online
For 1990-2009 cars only

Cylinder Head Replacement Left

Removal Procedure


    Object Number: 312278  Size: SH
  1. Disconnect the battery negative cable. Refer to Battery Replacement .
  2. Drain the engine coolant. Refer to Cooling System Draining and Filling .
  3. Disconnect the PCV tube from the air cleaner outlet duct.
  4. Remove the air cleaner outlet duct from the throttle body.
  5. Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement .
  6. Remove the engine cooling fan assembly. Refer to Fan Clutch Replacement .
  7. Important: Do not evacuate the A/C system. The A/C pipes can remain on the compressor.

  8. Remove the air conditioning compressor, if equipped, and move aside. Refer to Air Conditioning Compressor Replacement .

  9. Object Number: 288833  Size: SH
  10. Remove the nuts holding the power steering pump rear bracket to the engine.

  11. Object Number: 188295  Size: SH

    Important: The power steering pump can remain on the power steering pump mounting bracket. The power steering pump hoses can remain attached to the power steering pump.

  12. Remove the power steering pump mounting bracket and secure out of the way.
  13. Remove the power steering pump mounting bracket stud from the cylinder head.
  14. Remove the intake manifold. Refer to Intake Manifold Replacement
  15. Remove the exhaust manifold. Refer to Exhaust Manifold Replacement

  16. Object Number: 317450  Size: SH
  17. Remove the spark plug wire harness and the support.

  18. Object Number: 363401  Size: SH
  19. Remove the ground wires at the rear of the cylinder head.
  20. Remove the fuel line bracket bolt at the rear of the cylinder head.
  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. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 317450  Size: SH
  4. Install the spark plug wire harness and the support.
  5. Tighten
    Tighten the support bolts to 12 N·m (106 lb in).


    Object Number: 363401  Size: SH
  6. Install the ground wires at the rear of the cylinder head.
  7. Tighten
    Tighten the ground wire bolt to 35 N·m (26 lb ft).

  8. Install the fuel pipe bracket bolt at the rear of the cylinder head.
  9. Tighten
    Tighten the fuel pipe bracket bolt to 30 N·m (22 lb ft).

  10. Install the exhaust manifold. Refer to Exhaust Manifold Replacement
  11. Install the intake manifold. Refer to Valve Rocker Arm Cover Replacement

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

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


    Object Number: 288833  Size: SH
  17. Install the nuts holding the power steering pump rear bracket to the engine.
  18. Tighten
    Tighten the power steering pump rear bracket nuts to 41 N·m (30 lb ft).

  19. Install the air conditioning compressor, if equipped. Refer to Air Conditioning Compressor Replacement .
  20. Install the engine cooling fan. Refer to Fan Clutch Replacement in Engine Cooling.

  21. Object Number: 312278  Size: SH
  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 assembly. Refer to Air Cleaner Assembly Replacement .
  25. Install the air cleaner outlet duct onto the throttle body.
  26. Connect the PCV tube to the air cleaner outlet duct.

Cylinder Head Replacement Right

Removal Procedure


    Object Number: 312278  Size: SH
  1. Disconnect the battery negative cable. Refer to Battery Replacement .
  2. Drain the engine coolant. Refer to Cooling System Draining and Filling .
  3. Disconnect the PCV tube form the air cleaner outlet duct.
  4. Remove the air cleaner outlet duct from the throttle body.
  5. Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement .
  6. Remove the engine cooling fan assembly. Refer to Fan Clutch Replacement .
  7. Remove the intake manifold. Refer to Intake Manifold Replacement
  8. Remove the exhaust manifold. Refer to Exhaust Manifold Replacement

  9. Object Number: 317450  Size: SH
  10. Remove the spark plug wire harness and the support.

  11. Object Number: 375426  Size: SH
  12. Remove the ground wires at the rear of the cylinder head.

  13. Object Number: 196643  Size: SH
  14. Remove the generator. Refer to Generator Replacement .
  15. Remove the generator mounting bracket.
  16. Remove the generator mounting bracket stud from the cylinder head.
  17. Remove the valve pushrods. Refer to Valve Rocker Arm and Push Rod Replacement .

  18. Object Number: 334309  Size: SH
  19. Remove and discard the cylinder head bolts.
  20. Remove the cylinder head.
  21. 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. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 317450  Size: SH
  4. Install the spark wire harness and support.
  5. Tighten
    Tighten the support bolts to 12  N·m (106 lb in).


    Object Number: 375426  Size: SH
  6. Install the ground wires at the rear of the cylinder head.
  7. Tighten
    Tighten the ground wire stud to 35 N·m (26 lb ft).

  8. Install the exhaust manifolds. Refer to Exhaust Manifold Replacement .
  9. Install the intake manifold. Refer to Intake Manifold Replacement .

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

  13. Install the generator mounting bracket.
  14. Tighten
    Tighten the generator mounting bracket bolts and nuts to 41 N·m (30 lb ft).

  15. Install the generator. Refer to Generator Replacement
  16. Install the engine cooling fan. Refer to Fan Clutch Replacement .

  17. Object Number: 312278  Size: SH
  18. Fill the engine coolant system. Refer to Cooling System Draining and Filling .
  19. Connect the battery negative cable. Refer to Battery Replacement .
  20. Install the air cleaner assembly. Refer to Air Cleaner Assembly Replacement .
  21. Install the air cleaner outlet duct onto the throttle body.
  22. Connect the PCV tube to the air cleaner outlet duct.