GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 56592  Size: SH

    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. Caution: To avoid any vehicle damage, serious personal injury or death when major components are removed from the vehicle and the vehicle is supported by a hoist, support the vehicle with jack stands at the opposite end from which the components are being removed and strap the vehicle to the hoist.

  3. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  4. Remove the starter. Refer to Starter Motor Replacement in Engine Electrical.
  5. Disconnect the crankshaft position (CKP) sensor electrical connector.

  6. Object Number: 55322  Size: SH

    Important: Clean the area around the CKP before removal in order to avoid debris from entering the engine.

  7. Remove the CKP sensor retaining bolt.
  8. Remove the CKP sensor.

Installation Procedure


    Object Number: 55322  Size: SH
  1. Install the CKP 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 CKP sensor retaining bolt.
  4. Tighten
    Tighten the CKP sensor to 25 N·m (18 lb ft).


    Object Number: 56592  Size: SH
  5. Connect the CKP sensor electrical connector.
  6. Install the starter. Refer to Starter Motor Replacement in Engine Electrical.
  7. Lower the vehicle.
  8. Connect the negative battery cable.
  9. Program the transmitters. Refer to Transmitter Programming and to Transmitter Synchronization in Keyless Entry.
  10. Perform the CKP System Variation Learn Procedure. Refer to Crankshaft Position System Variation Learn