GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Important: Perform the CKP system variation learn procedure whenever the crankshaft position (CKP) sensor is removed or replaced. Refer to Crankshaft Position System Variation Learn .

  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle .

  2. Object Number: 10937  Size: SH
  3. Disconnect the CKP sensor harness connector.

  4. Object Number: 10938  Size: SH
  5. Remove the CKP sensor mounting bolt.

  6. Object Number: 11485  Size: SH
  7. Remove the CKP sensor.

Installation Procedure

Important: When installing the CKP sensor, make sure the sensor is fully seated before tightening the mounting bolt. A poorly seated CKP sensor may perform erratically and may set false DTCs.

    Important: Do not use the original O-ring.

  1. Replace the CKP sensor O-ring.
  2. Lubricate the O-ring with clean engine oil before installing the CKP sensor.

  3. Object Number: 11485  Size: SH

    Important: Make sure the CKP sensor mounting surface is clean and free of burrs.

  4. Install the CKP sensor.
  5. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 10938  Size: SH
  6. Install the CKP sensor mounting bolt.
  7. Tighten
    Tighten the mounting bolt to 8 N·m (71 lb in).


    Object Number: 10937  Size: SH
  8. Connect the CKP sensor harness connector.
  9. Lower the vehicle.
  10. Perform the CKP system variation learn procedure. Refer to Crankshaft Position System Variation Learn .