GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 1591858  Size: SH
  1. Disconnect the exhaust camshaft position (CMP) sensor electrical connector (1).

  2. Object Number: 1578483  Size: SH
  3. Remove the CMP sensor bolt. (Intake CMP shown, exhaust CMP similar)
  4. Remove the CMP sensor.

Installation Procedure


    Object Number: 1578483  Size: SH

    Note: Inspect the CMP sensor for damage. Replace as necessary.

  1. Lubricate the CMP sensor O-ring seal with clean engine oil.
  2. Caution: Refer to Fastener Caution in the Preface section.

  3. Install the CMP sensor. (Intake CMP shown, exhaust CMP similar)
  4. Install the CMP sensor bolt.
  5. Tighten
    Tighten the bolt to 10 N·m (89 lb in).


    Object Number: 1591858  Size: SH
  6. Connect the exhaust CMP sensor electrical connector (1).