GM Service Manual Online
For 1990-2009 cars only

Removal procedure

    Notice: Refer to Battery Disconnect Caution in the Preface section.


    Object Number: 1804729  Size: SH

    Important: The replacement procedure for the intake (1) and exhaust (2) camshaft position actuator solenoids are typically the same. The following procedure is specific to the intake camshaft position actuator solenoid, the exhaust is similar.

  1. Disconnect the negative battery cable.
  2. Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement .
  3. Disconnect the electrical connector (1) from the camshaft position sensor (2).

  4. Object Number: 1804731  Size: SH

    Important: Clean the area around the camshaft position actuator solenoid to prevent debris from entering the engine.

  5. Remove the bolt (1) attaching the camshaft position sensor (2).
  6. Remove the camshaft position sensor by twisting the actuator to release it, then pulling it away from the front of the engine cover.

Installation procedure


    Object Number: 1804731  Size: SH
  1. Inspect the camshaft position sensor O-ring for damage and replace as necessary.
  2. Lubricate the lip of the camshaft position sensor with clean engine oil.
  3. Notice: Refer to Fastener Notice in the Preface section.

    Important: Ensure the camshaft position sensor is fully seated.

  4. Install the camshaft position actuator solenoid.
  5. Tighten
    Tighten the camshaft position actuator solenoid attaching bolt to 10 N·m (89 lb in).

  6. Connect the electrical connector.
  7. Install the air cleaner assembly. Refer to Air Cleaner Assembly Replacement .
  8. Connect the negative battery cable.