GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 1285253  Size: SH
  1. Turn the ignition OFF.
  2. Remove the front compartment sight shields as necessary. Refer to Front Compartment Sight Shields Replacement .
  3. Remove the ECM and the ECM bracket. Refer to Engine Control Module Replacement .
  4. Disconnect the camshaft position (CMP) sensor electrical connector.

  5. Object Number: 1285252  Size: SH
  6. Remove the CMP sensor bolt.
  7. Remove the CMP sensor.

Installation Procedure


    Object Number: 1285252  Size: SH
  1. Install the CMP sensor.
  2. Notice: Refer to Fastener Notice in the Preface section.

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


    Object Number: 1285253  Size: SH
  5. Connect the CMP sensor electrical connector.
  6. Install the ECM and the ECM bracket. Refer to Engine Control Module Replacement .
  7. Install the front compartment sight shields as necessary. Refer to Front Compartment Sight Shields Replacement .