GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 45059 Angle Meter

Removal Procedure

  1. Drain the cooling system. Refer to Cooling System Draining and Filling .
  2. Drain the engine oil. Refer to Engine Oil and Oil Filter Replacement .
  3. Lower the vehicle.
  4. Remove the engine mount struts. Refer to Engine Mount Strut Replacement - Left Side and Engine Mount Strut Replacement - Right Side .
  5. Remove the lower intake manifold. Refer to Lower Intake Manifold Replacement .
  6. Remove the valve rocker arms and the pushrods. Refer to Valve Rocker Arm and Push Rod Replacement .
  7. Remove the exhaust crossover pipe. Refer to Exhaust Crossover Pipe Replacement .
  8. Remove the oil level indicator tube. Refer to Oil Level Indicator and Tube Replacement .
  9. Remove the left spark plug wires from the spark plugs. Refer to Spark Plug Wire Replacement .
  10. Remove the left spark plugs. Refer to Spark Plug Replacement .
  11. Remove the left exhaust manifold. Refer to Exhaust Manifold Replacement - Left Side .

  12. Object Number: 1369266  Size: SH
  13. Remove and discard the cylinder head bolts.
  14. Remove the cylinder head.

  15. Object Number: 54362  Size: SH
  16. Remove and discard the cylinder head gasket.

Installation Procedure


    Object Number: 54362  Size: SH
  1. Install a NEW cylinder head gasket.

  2. Object Number: 1369266  Size: SH
  3. Install the cylinder head onto the locator pins and the gasket.
  4. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 826677  Size: SH
  5. Install NEW cylinder head bolts.
  6. Tighten

    1. Tighten the bolts a first pass in sequence to 60 N·m (44 lb ft).
    2. Tighten the bolts a final pass in sequence an additional 95 degrees using the J 45059 .
  7. Install the left exhaust manifold. Refer to Exhaust Manifold Replacement - Left Side .
  8. Install the left spark plugs. Refer to Spark Plug Replacement .
  9. Install the left spark plug wires to the spark plugs. Refer to Spark Plug Wire Replacement .
  10. Install the oil level indicator tube. Refer to Oil Level Indicator and Tube Replacement .
  11. Install the exhaust crossover pipe. Refer to Exhaust Crossover Pipe Replacement .
  12. Install the valve rocker arms and pushrods. Refer to Valve Rocker Arm and Push Rod Replacement .
  13. Install the lower intake manifold. Refer to Lower Intake Manifold Replacement .
  14. Install the engine mount struts. Refer to Engine Mount Strut Replacement - Left Side and Engine Mount Strut Replacement - Right Side .
  15. Fill the crankcase with engine oil. Refer to Engine Oil and Oil Filter Replacement .
  16. Fill the cooling system. Refer to Cooling System Draining and Filling .
  17. Inspect for leaks.