GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Turn the steering wheel fully to the left.
  2. 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.

  3. Raise vehicle on hoist.
  4. Disconnect sensor electrical connector.

  5. Object Number: 15969  Size: SH
  6. Remove bolt/screw.
  7. Remove sensor from engine.
  8. Inspect for the following:
  9. 6.1. Inspect the sensor for wear, cracks, or leakage. Replace the O-ring if necessary.
    6.2. Lubricate the new O-ring with clean engine oil before installing.

Installation Procedure


    Object Number: 15969  Size: SH
  1. Install the sensor to the block.
  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. Reinstall the retainer bolt to hold sensor to block face.
  4. Tighten
    Tighten the bolt to 8 N·m (71 lb in).

  5. Connect the electrical connector.
  6. Lower the vehicle.