GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2009 🢒 G8 🢒 Engine 🢒 Engine Mechanical - 2.8L, 3.0L, 3.2L, or 3.6L 🢒 Cylinder Head Replacement - Left Side

Removal Procedure

    Warning: Refer to Battery Disconnect Warning in the Preface section.

  1. Disconnect the battery ground cable. Refer to Battery Negative Cable Disconnection and Connection.
  2. Remove the engine covers. Refer to Engine Cover Replacement.
  3. Remove the left camshaft cover. Refer to Camshaft Cover Replacement - Left Side.
  4. Remove the left bank secondary timing chain. Refer to Secondary Camshaft Drive Chain Replacement - Left Side.
  5. Remove the oil level indicator. Refer to Oil Level Indicator and Tube Replacement.

    6. Object Number: 1958060 Size: SH
  6. Disconnect the coolant temperature sensor electrical connector (1).

    7. Object Number: 1958062 Size: SH
  7. Remove the wiring harness ground to cylinder head retaining bolt (3).
  8. Remove the wiring harness ground (1) from the cylinder head (2).
  9. Remove the upper intake manifold with the lower intake manifold. Refer to Lower Intake Manifold Replacement.

    10. Object Number: 1957991 Size: SH
  10. Remove the left engine cover mounting bracket to cylinder head retaining bolt (2).
  11. Remove the left engine cover mounting bracket (2) from the cylinder head.

    12. Object Number: 1961770 Size: SH
  12. Remove the engine wiring harness bracket to cylinder head retaining bolts (1). 
  13. Remove the catalytic converter. Refer to Catalytic Converter Replacement - Left Side.

    14. Object Number: 1958064 Size: SH

    Important: DO NOT remove the oil filter adapter.

  14. Remove the oil filter adapter upper bolt (1).
  15. Remove the cylinder head with the exhaust manifold. Refer to Cylinder Head Removal - Left Side.

    16. Object Number: 1958066 Size: SH

    Important: Cylinder head gaskets must be discarded whenever the cylinder head has been removed from the cylinder block.

  16. Remove the cylinder head gasket (1).

    17. Discard the gasket.

  17. Clean and inspect the cylinder head and the cylinder block sealing surfaces. Refer to Cylinder Head Cleaning and Inspection and Engine Block Cleaning and Inspection.
  18. If necessary, perform the following steps:
    19. • Remove the exhaust manifold from the cylinder head. Refer to Exhaust Manifold Removal - Left 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 - Left Side.

    Object Number: 1958066 Size: SH
  2. Install a NEW cylinder head gasket (1).
  3. Install the cylinder head with the exhaust manifold to the engine. Refer to Cylinder Head Installation - Left Side.

    4. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 1958064 Size: SH
  4. Install the oil filter adapter upper retaining bolt (1) and tighten to 65 N·m (48 lb in).
  5. Install the catalytic converter to the exhaust manifold. Refer to Catalytic Converter Replacement - Left Side.

    6. Object Number: 1961770 Size: SH
  6. Install the wiring harness bracket (2) to the rear of the cylinder head (3).
  7. Install the wiring harness bracket using the cylinder head retaining bolts (1) and tighten to 10 N·m (89 lb in).

    8. Object Number: 1957991 Size: SH
  8. Install the left engine cover mounting bracket (2) to the cylinder head.
  9. Install the left engine cover mounting bracket using the cylinder head retaining bolt (2) and tighten to 35 N·m (26 lb in).
  10. Install the left engine cover mounting bracket to cylinder head retaining bolt (2).
  11. Install the upper intake manifold with the lower intake manifold. Refer to Lower Intake Manifold Replacement.

    12. Object Number: 1958062 Size: SH
  12. Install the wiring harness ground (1) to the cylinder head (2).
  13. Install the wiring harness ground to the cylinder head retaining bolt (3) and tighten to 10 N·m (89 lb in).

    14. Object Number: 1958060 Size: SH
  14. Connect the coolant temperature sensor electrical connector (1).
  15. Install the oil level indicator. Refer to Oil Level Indicator and Tube Replacement.
  16. Install the left bank secondary timing chain. Refer to Secondary Camshaft Drive Chain Replacement - Left Side.
  17. Install the left camshaft cover. Refer to Camshaft Cover Replacement - Left Side.
  18. Install the engine covers. Refer to Engine Cover Replacement.
  19. Connect the battery ground cable. Refer to Battery Negative Cable Disconnection and Connection.