GM Service Manual Online
For 1990-2009 cars only

    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). The marking is for an intake camshaft position actuator.

  2. 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). The triangle marking is for alignment to the highlighted timing chain link on the right side of the engine.
  8. Notice: Refer to Torque Reaction Against Timing Drive Chain Notice in the Preface section.

  9. Use an open wrench on the hex cast into the camshaft in order to prevent camshaft rotation when tightening the camshaft position actuator bolt.

  10. Object Number: 1852277  Size: SH
  11. Install the right intake camshaft position actuator.
  12. Notice: Refer to Fastener Notice in the Preface section.

  13. Install the camshaft position actuator bolt.
  14. Tighten
    Tighten the camshaft position actuator bolt to 58 N·m (43 lb ft).


    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). The marking is for an intake camshaft position actuator.

  2. Object Number: 1853919  Size: SH

    Caution: 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). The triangle marking is for alignment to the highlighted timing chain link on the right side of the engine.
  8. Caution: Refer to Torque Reaction Against Timing Drive Chain Caution in the Preface section.

  9. Use an open wrench on the hex cast into the camshaft in order to prevent camshaft rotation when tightening the camshaft position actuator bolt.

  10. Object Number: 1852277  Size: SH
  11. Install the right intake camshaft position actuator.
  12. Caution: Refer to Fastener Caution in the Preface section.

  13. Install the camshaft position actuator bolt and tighten to 58 N·m (43 lb ft).