GM Service Manual Online
For 1990-2009 cars only

Crankshaft Position Sensor Replacement 7X

Removal Procedure


    Object Number: 15969  Size: SH
  1. Turn OFF the ignition.
  2. Crank the steering wheel fully to the left.
  3. 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.

  4. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  5. Disconnect the sensor electrical connector.
  6. Remove the attaching bolt/screw.
  7. Remove the sensor from the engine.
  8. If the sensor is not being replaced, inspect for wear, cracks, or leakage .

Installation Procedure

  1. Lubricate the O-ring with clean engine oil before installation and replace if damaged.

  2. Object Number: 15969  Size: SH
  3. Install the sensor to the block.
  4. 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. Reinstall the sensor attaching bolt.
  6. Tighten
    Tighten the bolt to 8 N·m (71 lb in).

  7. Connect the sensor electrical connector.
  8. Lower the vehicle.

Crankshaft Position Sensor Replacement 24X

Removal Procedure


    Object Number: 14714  Size: SH
  1. Turn OFF the ignition.
  2. Remove the serpentine drive belt from the crankshaft pulley. Refer to Water Pump Removal in Engine Mechanical.
  3. 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.

  4. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  5. Remove the crankshaft harmonic balancer. Refer to Crankshaft Balancer Replacement in Engine Mechanical.
  6. Note the routing of the sensor harness before removal.
  7. Remove the harness retaining clip with bolt (1).
  8. Disconnect the sensor electrical connector.
  9. Remove the sensor bolts (2).
  10. Remove the sensor.

Installation Procedure


    Object Number: 14714  Size: SH
  1. Install the 24X crankshaft position sensor with bolts (2) and route harness as noted during removal.
  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 harness retaining clip with bolt (1).
  4. Tighten
    Tighten the bolts to 10 N·m (8 lb ft).

  5. Connect the sensor electrical connector.
  6. Reinstall the balancer on the crankshaft. Refer to Crankshaft Balancer Replacement in Engine Mechanical.
  7. Lower the vehicle.
  8. Reinstall the serpentine drive belt. Refer to Drive Belt Replacement in Engine Mechanical.
  9. Perform the Crankshaft Position System Variation Learn .