GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Turn the ignition OFF.
  2. Important: Do not remove the engine control module (ECM) from the ECM bracket .

    Do not remove the ECM redundant ground wire from the ECM.

  3. Remove the ECM bracket bolts and reposition the ECM bracket in order to provide access.

  4. Object Number: 1285235  Size: SH
  5. Remove the camshaft position (CMP) actuator valve electrical connector.

  6. Object Number: 1285237  Size: SH
  7. Remove the CMP actuator valve bolt.
  8. Remove the CMP actuator valve.
  9. 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. Notice: Refer to Fastener Notice in the Preface section.

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


    Object Number: 1285235  Size: SH
  7. Install the CMP actuator valve electrical connector.
  8. Install the ECM bracket with the ECM. Refer to Engine Control Module Replacement .