GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 455403  Size: SH
  1. Remove the CMP sensor electrical connector (2).
  2. Disconnect the ground strap.
  3. Remove the CMP sensor retaining bolt (1).
  4. Remove the CMP sensor (3).

Installation Procedure


    Object Number: 455403  Size: SH
  1. Apply a thin coat of engine oil to the sensor O-ring.
  2. Install a CMP sensor (3).
  3. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  4. Install the retaining bolt (1).
  5. Tighten
    Tighten the retaining bolt to 9N·m (78 lb in).

  6. Reconnect the CMP sensor electrical connector (2).
  7. Reconnect the ground strap.