GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Important: The crankshaft position (CKP) system variation learn procedure will need to be performed whenever the CKP sensor is removed or replaced.


    Object Number: 349061  Size: SH
  1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. If equipped, remove the engine shield bolts.
  3. Remove the engine shield.

  4. Object Number: 782731  Size: SH
  5. Disconnect the CKP sensor electrical connector (5).

  6. Object Number: 10938  Size: SH
  7. Remove the CKP sensor bolt.

  8. Object Number: 11485  Size: SH
  9. Remove the CKP sensor.

Installation Procedure

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


    Object Number: 11485  Size: SH

    Important: Do not reuse the original O-ring seal.

  1. If installing the old CKP sensor, install a NEW O-ring seal.
  2. Lubricate the O-ring seal with clean engine oil.
  3. Install the CKP sensor.

  4. Object Number: 10938  Size: SH

    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.

  5. Install the CKP sensor bolt.
  6. Tighten
    Tighten the bolt to 9 N·m (80 lb in).


    Object Number: 782731  Size: SH
  7. Connect the CKP sensor electrical connector (5).

  8. Object Number: 349061  Size: SH
  9. Install the engine shield.
  10. Install the engine shield bolts.
  11. Tighten
    Tighten the bolts to 20 N·m (15 lb ft).

  12. Perform the CKP system variation learn procedure. Refer to Crankshaft Position System Variation Learn .