GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 1890093  Size: SH
  1. Remove the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement.
  2. Disconnect the engine wiring harness electrical connector (5) from the exhaust camshaft position (CMP) sensor (4).

  3. Object Number: 1578483  Size: SH
  4. Remove the CMP sensor bolt. (Intake CMP shown, exhaust CMP similar).
  5. 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. Install the CMP sensor. (Intake CMP shown, exhaust CMP similar).
  3. Caution: Refer to Fastener Caution in the Preface section.

  4. Install the CMP sensor bolt and tighten to 10 N·m (89 lb in).

  5. Object Number: 1890093  Size: SH
  6. Connect engine wiring harness electrical connector (5) to the exhaust CMP sensor (4).
  7. Install the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement.