GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 602305  Size: SH
  1. Raise and support the vehicle.
  2. Remove air deflector.
  3. Disconnect wiring harness retainer.
  4. Remove oil sending unit.
  5. Remove oil cooler lines.
  6. Remove the crankshaft sensor electrical connector. For specific CKP sensor identification, refer to

    CKP B, CKP A, Engine Oil Pressure Switch, and Engine Oil Level Switch


    Object Number: 602338  Size: SH
    (1)CKP Sensor B
    (2)CKP Sensor A
    (3)Engine Oil Pressure Switch
    (4)Engine Oil Level Switch
    .
  7. Remove the crankshaft retaining bolt.
  8. Remove the crankshaft sensor.

Installation Procedure


    Object Number: 602305  Size: SH

    Important: Inspect the crankshaft sensor O-ring for wear or damage. If a problem is found, replace the O-ring.

  1. Lubricate the crankshaft sensor O-ring with clean engine oil.
  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 crankshaft sensor and the retaining bolt.
  4. Tighten
    Tighten the retaining bolt between 8-11N·m (70-100 lb in).

  5. Install the crankshaft sensor electrical connector.
  6. Lower the vehicle.
  7. Operate the engine and inspect crankshaft sensor for engine oil leaks.
  8. Perform the Crankshaft Position System Variation Learn .