GM Service Manual Online
For 1990-2009 cars only

Camshaft Cover Replacement - Left Side LP1, LY7

Removal Procedure

  1. Remove the engine cover. Refer to Fuel Injector Sight Shield Replacement .
  2. Remove the upper intake manifold with the lower intake manifold. Refer to Lower Intake Manifold Replacement .

  3. Object Number: 945375  Size: SH
  4. Disconnect the ignition coil electrical connectors.

  5. Object Number: 945337  Size: SH
  6. Remove the wiring harness from the side of the camshaft cover by sliding the conduit down and outboard.
  7. Remove the wiring conduit retainers from the camshaft cover by rotating the wiring harness conduit retainers counterclockwise.

  8. Object Number: 945343  Size: SH

    Important: It is not necessary to disconnect the engine front cover electrical connectors.

  9. Remove the wiring harness from the front of the camshaft cover.
  10. Reposition and secure the wiring harnesses away from the camshaft cover in order to provide clearance.

  11. Object Number: 868186  Size: SH
  12. Remove the ignition coils.

  13. Object Number: 902871  Size: SH
  14. Remove the camshaft cover.
  15. Remove and discard the camshaft cover seal and grommets.

Installation Procedure

  1. Install a NEW camshaft cover seal and NEW grommets.

  2. Object Number: 902871  Size: SH
  3. Install the camshaft cover. Refer to Camshaft Cover Installation - Left Side .

  4. Object Number: 868186  Size: SH
  5. Install the ignition coils.

  6. Object Number: 945343  Size: SH
  7. Install the wiring harness to the front of the camshaft cover.
  8. Install the wiring harness conduit retainers to the wiring harness conduit.

  9. Object Number: 945337  Size: SH
  10. Install the wiring harness to the side of the camshaft cover.

  11. Object Number: 945375  Size: SH
  12. Connect the ignition coil electrical connectors.
  13. Install the upper intake manifold with the lower intake manifold. Refer to Lower Intake Manifold Replacement .
  14. Install the engine cover. Refer to Fuel Injector Sight Shield Replacement .

Camshaft Cover Replacement - Left Side LLT

Removal Procedure


    Object Number: 945375  Size: SH
  1. Remove the intake manifold. Refer to Intake Manifold Replacement.
  2. Remove the fuel pipe shield. Refer to Fuel Pipe Shield Replacement.
  3. Remove the crankcase ventilation pipe. Refer to Positive Crankcase Ventilation Hose/Pipe/Tube Replacement.
  4. Disconnect the ignition coil electrical connectors.

  5. Object Number: 1978216  Size: SH
  6. Remove the wiring harness from the side of the camshaft cover by sliding the conduit down and outboard.
  7. Remove the wiring conduit retainers from the camshaft cover by rotating the wiring harness conduit retainers counterclockwise.
  8. Note: It is not necessary to disconnect the engine front cover electrical connectors.

  9. Disconnect the camshaft position sensors (1) and camshaft actuator valve (2) electrical connectors.
  10. Reposition and secure the wiring harnesses away from the camshaft cover in order to provide clearance.

  11. Object Number: 1978246  Size: SH
  12. Remove the ignition coil bolts (1).
  13. Remove the ignition coils (2).

  14. Object Number: 1978319  Size: SH
  15. Remove the camshaft cover.
  16. Remove and discard the camshaft cover seal (1) and grommets (2).

Installation Procedure


    Object Number: 1978319  Size: SH
  1. Install a NEW camshaft cover seal (1) and NEW grommets (2).
  2. Install the camshaft cover. Refer to Camshaft Cover Installation - Left Side.

  3. Object Number: 1978246  Size: SH
  4. Install the ignition coils (2).
  5. Caution: Refer to Fastener Caution in the Preface section.

  6. Install the ignition coil bolts (1) and tighten to 10 N·m (89 lb in).

  7. Object Number: 1978216  Size: SH
  8. Connect the camshaft actuator valves (2) and the camshaft position sensor (1) electrical connectors.
  9. Install the wiring harness conduit retainers to the wiring harness conduit.

  10. Object Number: 945337  Size: SH
  11. Install the wiring harness to the side of the camshaft cover.

  12. Object Number: 945375  Size: SH
  13. Connect the ignition coil electrical connectors.
  14. Install the crankcase ventilation pipe. Refer to Positive Crankcase Ventilation Hose/Pipe/Tube Replacement.
  15. Install the fuel pipe shield. Refer to Fuel Pipe Shield Replacement.
  16. Install the intake manifold. Refer to Intake Manifold Replacement.