GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 690593  Size: SH
  1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. If the vehicle is equipped with the underbody shield package, remove the steering linkage shield.
  3. Disconnect the camshaft position (CMP) sensor electrical connector (3).
  4. Remove the CMP sensor bolt (2).
  5. Remove the CMP sensor (1).
  6. Inspect the CMP sensor for wear, cracks or leakage if the sensor is not being replaced.

Installation Procedure

Important: Inspect the CMP sensor O-ring for wear or damage. If a problem is found, replace the O-ring. Lubricate the new O-ring with engine oil before installing.


    Object Number: 690593  Size: SH
  1. Install the CMP sensor (1).
  2. 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.

    Important: The CMP sensor bolt has self-tapping threads, care must be taken, NOT to strip the threads when installing.

  3. Install the CMP sensor bolt (2).
  4. Tighten
    Tighten the bolt to 12N·m(106 lb in).

  5. Connect the CMP sensor electrical connector (3).
  6. Install the steering linkage shield, if equipped.
  7. Lower the vehicle.