GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

    Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

  1. Disconnect the negative battery cable.
  2. Remove the intake manifold. Refer to Intake Manifold Replacement in Engine Mechanical.
  3. Remove the Camshaft Position (CMP) sensor electrical connector.
  4. Important: Clean the area around the CMP before removal in order to avoid debris from entering the engine.


    Object Number: 55308  Size: SH
  5. Remove the CMP sensor retaining bolt.
  6. Remove the CMP sensor.

Installation Procedure


    Object Number: 55308  Size: SH
  1. Install the CMP sensor.
  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.

  3. Install the CMP sensor retaining bolt.
  4. Tighten
    Tighten the CMP to 25 N·m (18 lb ft).

  5. Connect the CMP sensor electrical connector.
  6. Install the intake manifold. Refer to Intake Manifold Replacement in Engine Mechanical.
  7. Connect the negative battery cable.
  8. Perform the idle learn procedure. Refer to PCM Idle Learn Procedure .
  9. Program the transmitters. Refer to Transmitter Programming/Synchronization in Keyless Entry.