GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Remove the right bank secondary timing chain. Refer to Secondary Camshaft Drive Chain Replacement - Right Side .
  2. Remove the coolant inlet pipe bolts and reposition the coolant inlet pipe to provide access. Refer to Engine Coolant Inlet Pipe Replacement .
  3. Remove the catalytic converter. Refer to Catalytic Converter Replacement - Right Side .

  4. Object Number: 945769  Size: SH
  5. Remove the wiring harness ground from the side of the cylinder head.

  6. Object Number: 945316  Size: SH
  7. Remove the wiring harness conduit upper bolt from the cylinder head and reposition the conduit to provide access.
  8. Remove the battery cable from the cylinder head. Refer to Battery Negative Cable Replacement .

  9. Object Number: 902818  Size: SH
  10. Remove the cylinder head with the exhaust manifold. Refer to Cylinder Head Removal - Right Side .

  11. Object Number: 902817  Size: SH
  12. Remove and discard the cylinder head gasket.
  13. Clean and inspect the cylinder head and the engine block sealing surfaces. Refer to Cylinder Head Cleaning and Inspection and Engine Block Cleaning and Inspection .
  14. If necessary, perform the following steps:
  15. • Remove the exhaust manifold from the cylinder head. Refer to Exhaust Manifold Removal - Right Side .
    • Disassemble the cylinder head. Refer to Cylinder Head Disassemble .

Installation Procedure

  1. If necessary, perform the following steps:
  2. • Assemble the cylinder head. Refer to Cylinder Head Assemble .
    • Install the exhaust manifold to the cylinder head. Refer to Exhaust Manifold Installation - Right Side .

    Object Number: 902817  Size: SH
  3. Install a NEW cylinder head gasket.

  4. Object Number: 902818  Size: SH
  5. Carefully install the cylinder head with the exhaust manifold to the engine. Refer to Cylinder Head Installation - Right Side .
  6. Connect the catalytic converter to the exhaust manifold.
  7. Install the battery negative cable to the cylinder head. Refer to Battery Negative Cable Replacement .
  8. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 945316  Size: SH
  9. Install the wiring harness conduit to the cylinder head.
  10. Tighten
    Tighten the wiring harness upper bolt to 10 N·m (89 lb in).


    Object Number: 945769  Size: SH
  11. Install the wiring harness ground to the side of the cylinder head.
  12. Tighten
    Tighten the wiring harness ground bolt to 10 N·m (89 lb in).

  13. Install the catalytic converter. Refer to Catalytic Converter Replacement - Right Side .
  14. Install the coolant inlet pipe. Refer to Engine Coolant Inlet Pipe Replacement .
  15. Install the right bank secondary timing chain. Refer to Secondary Camshaft Drive Chain Replacement - Right Side .