GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 1285235  Size: SH
  1. Turn the ignition OFF.
  2. Remove the front compartment sight shields as necessary. Refer to Front Compartment Sight Shields Replacement.
  3. Remove the ECM and the ECM bracket. Refer to Engine Control Module Replacement.
  4. Disconnect the camshaft position (CMP) actuator valve electrical connector.

  5. Object Number: 1285237  Size: SH
  6. Remove the CMP actuator valve bolts.
  7. Remove the CMP actuator valve.
  8. Inspect the CMP actuator valve seal for damage. Replace the seal if necessary.

Installation Procedure

  1. Inspect the CMP actuator valve seal for damage. Replace the seal if necessary.

  2. Object Number: 1285237  Size: SH
  3. Install the CMP actuator valve.
  4. Caution: Refer to Fastener Caution in the Preface section.

  5. Install the CMP actuator valve bolt and tighten to 10 N·m (89 lb in).

  6. Object Number: 1285235  Size: SH
  7. Connect the CMP actuator valve electrical connector.
  8. Install the ECM and the ECM bracket. Refer to Engine Control Module Replacement.
  9. Install the front compartment sight shields as necessary. Refer to Front Compartment Sight Shields Replacement