GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 1858800  Size: SH
  1. Remove the right exhaust camshaft actuator. Refer to Camshaft Position Actuator Replacement - Bank 1 (Right Side) Exhaust .
  2. Remove the intake camshaft position actuator bolt.
  3. Remove the right intake camshaft position actuator.

Installation Procedure


    Object Number: 1852276  Size: SH
  1. Ensure the proper camshaft position actuator is installed. Observe the body of the camshaft position actuator for the IN marking (3).
  2. The marking is for an exhaust camshaft position actuator.


    Object Number: 1853919  Size: SH

    Notice: Ensure the proper camshaft position actuator is installed in the correct position. Failure to install the proper camshaft position actuator can effect engine performance and set an engine code.

  3. Ensure the proper camshaft position actuator is being installed. The reluctor wheel on the right intake camshaft position actuator (1) is indexed in a different position compared to the left intake camshaft position actuator (2).

  4. Object Number: 1853925  Size: SH
  5. On the right intake camshaft actuator the edge of the reluctor wheel (1) lines up with the valley (2) of the sprocket tooth.

  6. Object Number: 1852276  Size: SH
  7. Ensure the proper timing mark is used. Observe the outer ring of the camshaft position actuator for the triangle marking (2).
  8. The triangle marking is for alignment to the highlighted timing chain link on the right side of the engine.


    Object Number: 1858800  Size: SH
  9. Locate the intake camshaft position actuator to the camshaft and loosely install the bolt.
  10. Notice: Refer to Torque Reaction Against Timing Drive Chain Notice in the Preface section.

    Important: Use an open-end wrench at the camshaft hex to prevent camshaft/engine rotation.

  11. Tighten the camshaft position actuator bolt. Refer to Camshaft Position Actuator Installation - Right Side Intake .
  12. Install the right exhaust camshaft actuator. Refer to Camshaft Position Actuator Replacement - Bank 1 (Right Side) Exhaust .