GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

    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.

  1. Raise and support the vehicle.
  2. 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
    .
  3. Remove the crankshaft retaining bolt.
  4. Remove the crankshaft sensor.

Installation Procedure

    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.

    Important: Be sure to fully seat the CKP sensor into the engine block. Failure to fully seat the CKP sensor may cause a CKP sensor DTC to set.

  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. 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.

  7. Lower the vehicle.
  8. Operate the engine and inspect crankshaft sensor for engine oil leaks.
  9. Perform the Crankshaft Position System Variation Learn .