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: 1815153  Size: SH
  4. Disconnect the engine wiring harness electrical connector (1) from the exhaust camshaft position (CMP) sensor.

  5. Object Number: 1578483  Size: SH
  6. Remove the exhaust CMP sensor bolt. (Intake CMP shown, exhaust CMP similar).
  7. Remove the exhaust CMP sensor.

Installation Procedure


    Object Number: 1578483  Size: SH

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

  1. Lubricate the exhaust CMP sensor O-ring seal with clean engine oil.
  2. Install the exhaust CMP sensor. (Intake CMP shown, exhaust CMP similar).
  3. Notice: Refer to Fastener Notice in the Preface section.

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


    Object Number: 1815153  Size: SH
  6. Connect engine wiring harness electrical connector (1) to the exhaust 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: 1815153  Size: SH
  4. Disconnect the engine wiring harness electrical connector (1) from the exhaust camshaft position (CMP) sensor.

  5. Object Number: 1578483  Size: SH
  6. Remove the exhaust CMP sensor bolt. (Intake CMP shown, exhaust CMP similar).
  7. Remove the exhaust CMP sensor.

Installation Procedure


    Object Number: 1578483  Size: SH

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

  1. Lubricate the exhaust CMP sensor O-ring seal with clean engine oil.
  2. Install the exhaust CMP sensor. (Intake CMP shown, exhaust CMP similar).
  3. Caution: Refer to Fastener Caution in the Preface section.

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


    Object Number: 1815153  Size: SH
  6. Connect engine wiring harness electrical connector (1) to the exhaust 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.