GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 1272602  Size: SH
  1. Remove the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement .
  2. Remove the battery tray assembly. Refer to Battery Tray Replacement .

  3. Object Number: 928153  Size: SH
  4. Disconnect the positive crankcase ventilation (PCV) dirty air tube from the camshaft cover.
  5. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .

  6. Object Number: 887932  Size: SH
  7. Remove the bolts securing the wiring harness bracket to the right cylinder head.
  8. Remove the right side engine mount nut. Refer to Engine Mount Replacement - Right Side .
  9. Disconnect the wire harness retainers from the generator housing.
  10. Lower the vehicle.

  11. Object Number: 928257  Size: SH
  12. Remove the bank 1 ignition coils. Refer to Ignition Coil Replacement - Bank 1 .
  13. Disconnect the cable harness clips at the front of the camshaft cover and position the cable harness aside.
  14. Disconnect the transmission control module (TCM) electrical connector. Refer to Transmission Control Module Replacement .
  15. Disconnect the C101 and C105 electrical connectors and position the electrical wiring harness aside. Refer to Harness Routing Views .
  16. Remove the bank 1 intake and exhaust camshaft position sensors. Refer to Camshaft Position Sensor Replacement - Bank 1 (Right Side) Intake and Camshaft Position Sensor Replacement - Bank 1 (Right Side) Exhaust .

  17. Object Number: 928269  Size: SH
  18. Place a suitable floor jack with a block of wood under the oil pan and carefully raise the right side of the engine.
  19. Remove the bolt connecting the ground strap to the right camshaft cover.

  20. Object Number: 928273  Size: SH
  21. Remove the camshaft cover bolts.
  22. Remove the camshaft cover.
  23. Discard the camshaft cover gasket, spark plug port seals, and mounting bolt grommets if there is any evidence of damage or if the camshaft cover gasket comes out of the groove in the cover during removal.
  24. Clean and inspect the camshaft cover. Refer to Camshaft Cover Cleaning and Inspection .

Installation Procedure


    Object Number: 1242793  Size: SH

    Important: Be careful to prevent the exposed section of the camshaft cover seal from being damaged by the edge of the cylinder head casting.

  1. Install the camshaft cover gasket, the spark plug seals, and the mounting bolt grommets to the camshaft cover as required.
  2. Clean the cylinder head to camshaft cover mating surface.
  3. Place a small amount of sealant at the split line (1, 2) of the right cylinder head and the right camshaft position actuator housing. Refer to Adhesives, Fluids, Lubricants, and Sealers .

  4. Object Number: 928273  Size: SH
  5. Install the camshaft cover. Ensure the camshaft cover gasket is in the proper position.
  6. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 928269  Size: SH
  7. Install the camshaft cover bolts installing the ground strap to the camshaft cover.
  8. Tighten
    Tighten the bolts to 10 N·m (89 lb in).

  9. Lower the engine and remove the floor jack and block of wood.
  10. Install the bank 1 intake and exhaust camshaft position sensors. Refer to Camshaft Position Sensor Replacement - Bank 1 (Right Side) Intake and Camshaft Position Sensor Replacement - Bank 1 (Right Side) Exhaust .
  11. Connect the C101 and C105 electrical connectors. Refer to Harness Routing Views .
  12. Connect the TCM electrical connector. Refer to Transmission Control Module Replacement .
  13. Connect the cable harness clips.

  14. Object Number: 928257  Size: SH
  15. Install the bank 1 ignition coil. Refer to Ignition Coil Replacement - Bank 1 .
  16. Raise the vehicle. Refer to Lifting and Jacking the Vehicle .
  17. Connect the wire harness retainers to the generator housing.
  18. Install the right side engine mount nut. Refer to Engine Mount Replacement - Right Side .

  19. Object Number: 887932  Size: SH
  20. Install the bolts securing the wiring harness bracket to the right cylinder head.
  21. Tighten
    Tighten the bolt to 45 N·m (33 lb ft).


    Object Number: 928153  Size: SH
  22. Connect the PCV dirty air tube to the camshaft cover.

  23. Object Number: 1272602  Size: SH
  24. Install the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement .