GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 36660-A Torque Angle Meter

Removal Procedure

  1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Drain the engine coolant from the cooling system. Refer to Flushing in Engine Cooling.
  3. Drain the engine oil. Refer to Engine Oil and Oil Filter Replacement .
  4. Lower the vehicle.
  5. Remove the upper intake manifold. Refer to Upper Intake Manifold Replacement .
  6. Remove the lower intake manifold. Refer to Lower Intake Manifold Replacement .
  7. Remove the valve rocker arms and pushrods. Refer to Valve Rocker Arm and Push Rod Replacement .
  8. Remove the exhaust crossover pipe. Refer to Exhaust Crossover Pipe Replacement .
  9. Remove the right spark plug wires from the spark plugs. Refer to Spark Plug Wire Replacement in Engine Controls - 3.4L.

  10. Object Number: 54960  Size: SH
  11. Remove the fuel line bracket.
  12. Remove the generator. Refer to Generator Replacement in Engine Electrical.
  13. Remove the generator bracket. Refer to Generator Bracket Replacement in Engine Electrical.
  14. Remove the right spark plugs. Refer to Spark Plug Replacement in Engine Electrical.
  15. Remove the right exhaust manifold. Refer to Exhaust Manifold Replacement - Right Side .

  16. Object Number: 190596  Size: SH
  17. Remove the right cylinder head bolts.
  18. Remove the right cylinder head.

  19. Object Number: 190597  Size: SH
  20. Remove the right cylinder head gasket.
  21. Clean the following areas:
  22. Clean and inspect the cylinder head.

Installation Procedure


    Object Number: 190597  Size: SH
  1. Install a new right cylinder head gasket.

  2. Object Number: 190596  Size: SH
  3. Install the right cylinder head over the locator pins and over the gasket.

  4. Object Number: 826677  Size: SH

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

    Tighten
    Tighten the cylinder head bolts in sequence to 60 N·m (44 lb ft). Turn the bolts an additional 95 degrees using the J 36660-A .

  5. Install the right exhaust manifold. Refer to Exhaust Manifold Replacement - Right Side in Engine Exhaust.
  6. Install the right spark plugs. Refer to Spark Plug Wire Replacement .
  7. Install the generator bracket. Refer to Generator Bracket Replacement in Engine Electrical.
  8. Install the generator. Refer to Generator Replacement in Engine Electrical.

  9. Object Number: 54960  Size: SH
  10. Install the fuel line bracket.
  11. Install the right spark plug wires to the spark plugs. Refer to Spark Plug Wire Replacement in Engine Electrical.
  12. Install the exhaust crossover pipe. Refer to Exhaust Crossover Pipe Replacement in Engine Exhaust.
  13. Install the pushrods and valve rocker arms. Refer to Valve Rocker Arm and Push Rod Replacement .
  14. Install the lower intake manifold. Refer to Lower Intake Manifold Replacement .
  15. Install the upper intake manifold. Refer to Upper Intake Manifold Replacement .
  16. Fill the engine with new engine oil. Refer to Engine Oil and Oil Filter Replacement .
  17. Fill the cooling system with engine coolant. Refer to Flushing in Engine Cooling.