GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 946219  Size: SH
  1. Remove the left exhaust camshaft actuator. Refer to Camshaft Position Actuator Replacement - Bank 2 (Left Side) Exhaust .
  2. Remove the intake camshaft position actuator bolt.
  3. Remove the left intake camshaft position actuator.

Installation Procedure


    Object Number: 1579310  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 the intake camshaft position actuator.

  3. Ensure the proper timing mark is used. Observe the outer ring of the camshaft position actuator for the L and circle marking (1).
  4. The marking is for the alignment to the highlighted timing chain link on the left side of the engine.


    Object Number: 946219  Size: SH
  5. Locate the intake camshaft position actuator to the camshaft and loosely install the bolt.
  6. 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.

  7. Tighten the camshaft position actuator bolt. Refer to Camshaft Position Actuator Installation - Left Side Intake .
  8. Install the left exhaust camshaft actuator. Refer to Camshaft Position Actuator Replacement - Bank 2 (Left Side) Exhaust .