GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Remove the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement .
  2. Remove the intake manifold cover. Refer to Intake Manifold Cover Replacement .

  3. Object Number: 1815154  Size: SH
  4. Disconnect the engine wiring harness electrical connector (1) from the intake camshaft position (CMP) sensor.

  5. Object Number: 1578483  Size: SH
  6. Remove the intake CMP sensor bolt.
  7. Remove the intake CMP sensor.

Installation Procedure


    Object Number: 1578483  Size: SH

    Important: Inspect the intake CMP sensor for damage, replace as necessary.

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

  4. Install the intake CMP sensor bolt.
  5. Tighten
    Tighten the bolt to 10 N·m (89 lb in).


    Object Number: 1815154  Size: SH
  6. Connect the engine wiring harness electrical connector (1) to the intake CMP sensor.
  7. Install the intake manifold cover. Refer to Intake Manifold Cover Replacement .
  8. Install the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement .

Removal Procedure

  1. Remove the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement.
  2. Remove the intake manifold cover. Refer to Intake Manifold Cover Replacement.

  3. Object Number: 1815154  Size: SH
  4. Disconnect the engine wiring harness electrical connector (1) from the intake camshaft position (CMP) sensor.

  5. Object Number: 1578483  Size: SH
  6. Remove the intake CMP sensor bolt.
  7. Remove the intake CMP sensor.

Installation Procedure


    Object Number: 1578483  Size: SH

    Note: Inspect the intake CMP sensor for damage, replace as necessary.

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

  4. Install the intake CMP sensor bolt.
  5. Tighten
    Tighten the bolt to 10 N·m (89 lb in).


    Object Number: 1815154  Size: SH
  6. Connect the engine wiring harness electrical connector (1) to the intake CMP sensor.
  7. Install the intake manifold cover. Refer to Intake Manifold Cover Replacement.
  8. Install the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement.