GM Service Manual Online
For 1990-2009 cars only

Cylinder Head Replacement Left Side

Removal Procedure


    Object Number: 288833  Size: SH
  1. Disconnect the battery negative cable. Refer to Battery Replacement .
  2. Remove the engine cover. Refer to Engine Cover Replacement .
  3. Remove the engine cooling fan. Refer to Fan Replacement .
  4. Remove the air conditioning compressor, if equipped. Refer to Air Conditioning Compressor Replacement .
  5. Remove the nut holding the power steering pump rear bracket to the engine.

  6. Object Number: 188295  Size: SH

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

  7. Remove the power steering pump mounting bracket and set aside. Refer to Accessory Mounting Brackets Replacement .
  8. Remove the power steering pump mounting bracket stud from the cylinder head.
  9. Remove the intake manifold. Refer to Intake Manifold Replacement .
  10. Remove the exhaust manifold. Refer to Exhaust Manifold Replacement .

  11. Object Number: 363401  Size: SH
  12. Remove the ground wires at the rear of the left cylinder head.
  13. Remove the A/C pipe bracket nut, if equipped.
  14. Remove the fuel pipe bracket bolt at the rear of the cylinder head.
  15. Remove the valve pushrods. Refer to Valve Rocker Arm and Push Rod Replacement .

  16. Object Number: 5130  Size: SH
  17. Remove and discard the cylinder head bolts.
  18. Remove the cylinder head.
  19. Clean all sealing 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: 363401  Size: SH
  4. Install the ground wires and bolt at the rear of the left cylinder head.
  5. Tighten
    Tighten the ground wire bolt to 35 N·m (26 lb ft).

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

  8. Install the A/C pipe bracket and nut, if equipped.
  9. Tighten
    Tighten the A/C pipe bracket nut to 35 N·m (26 lb ft).

  10. Install the exhaust manifold. Refer to Exhaust Manifold Replacement .
  11. Install the intake manifold. Refer to Intake Manifold Replacement .

  12. Object Number: 188295  Size: SH
  13. Install the stud for the power steering pump mounting bracket to 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. Refer to Accessory Mounting Brackets Replacement .

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

  19. Install the air conditioning compressor. Refer to Air Conditioning Compressor Replacement .
  20. Install the engine cooling fan. Refer to Fan Replacement .
  21. Connect the battery negative cable. Refer to Battery Replacement .
  22. Install the engine cover. Refer to Engine Cover Replacement .

Cylinder Head Replacement Right Side

Removal Procedure

  1. Disconnect the battery negative cable. Refer to Battery Replacement .
  2. Remove the engine cover. Refer to Engine Cover Replacement .
  3. Remove the engine cooling fan. Refer to Fan Replacement .
  4. Remove the intake manifold. Refer to Intake Manifold Replacement .

  5. Object Number: 317450  Size: SH
  6. Remove the spark plug wire harness support.
  7. Remove the exhaust manifold. Refer to Exhaust Manifold Replacement .

  8. Object Number: 196643  Size: SH
  9. Remove the generator mounting bracket. Refer to Accessory Mounting Brackets Replacement .
  10. Remove the generator mounting bracket stud from the cylinder head.
  11. Remove the engine wiring harness bolt from the rear of the right cylinder head.
  12. Remove the valve pushrods. Refer to Valve Rocker Arm and Push Rod Replacement .

  13. Object Number: 334309  Size: SH
  14. Remove and discard the cylinder head bolts.
  15. Remove the cylinder head.
  16. Clean all sealing surfaces. Refer to Cylinder Head Cleaning and Inspection .

Installation Procedure


    Object Number: 196132  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: 317450  Size: SH
  5. Install the spark plug wire harness and support.
  6. Tighten
    Tighten the spark plug wire support bolts to 12 N·m (106 lb in).

  7. Install the intake manifold. Refer to Intake Manifold Replacement .

  8. Object Number: 196643  Size: SH
  9. Install the stud for the generator mounting bracket.
  10. Tighten
    Tighten the generator mounting bracket stud to 20 N·m (15 lb ft).

  11. Install the generator mounting bracket. Refer to Accessory Mounting Brackets Replacement .
  12. Install the bolt holding the engine wiring harness to the rear of the right cylinder head.
  13. Tighten
    Tighten the engine wiring harness bolt to 36 N·m (27 lb ft).

  14. Install the engine cooling fan. Refer to Fan Replacement .
  15. Connect the battery negative cable. Refer to Battery Replacement .
  16. Install the engine cover. Refer to Engine Cover Replacement .