GM Service Manual Online
For 1990-2009 cars only

    Object Number: 1852281  Size: SH

    Important: Some models use a second design inverted tooth timing drive system on the secondary drive components. Refer to Camshaft Timing Drive Design Identification for more information on specific changes.

  1. Ensure the proper camshaft position actuator is installed. Observe the body of the camshaft position actuator for the "EX" marking (1). The marking is for an exhaust camshaft position actuator.
  2. Ensure the proper timing mark is used. Observe the outer ring of the camshaft position actuator for the triangle marking (2). The marking is for alignment to the highlighted timing chain link on the right side of the engine.
  3. Notice: Refer to Torque Reaction Against Timing Drive Chain Notice in the Preface section.

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

  5. Object Number: 1852282  Size: SH
  6. Install the right exhaust camshaft position actuator.
  7. Notice: Refer to Fastener Notice in the Preface section.

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