GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Important: Perform the Crankshaft Position System Variation Learn whenever the crankshaft position sensor is removed or replaced.


    Object Number: 1236361  Size: SH
  1. Remove the starter. Refer to Starter Motor Replacement in Engine Electrical.
  2. Disconnect the crankshaft position (CKP) sensor electrical connector.

  3. Object Number: 1239292  Size: SH
  4. Clean the area around the CKP sensor before removal in order to avoid debris from entering the engine.
  5. Remove the CKP sensor bolt.
  6. Remove the CKP sensor.

Installation Procedure


    Object Number: 1239292  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 bolt.
  4. Tighten
    Tighten the bolt to 25 N·m (18 lb ft).


    Object Number: 1236361  Size: SH
  5. Connect the CKP sensor electrical connector.
  6. Install the starter. Refer to Starter Motor Replacement in Engine Electrical.
  7. Perform the CKP system variation learn procedure. Refer to Crankshaft Position System Variation Learn .