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For 1990-2009 cars only
Makes 🢒 Oldsmobile 🢒 2002 🢒 Alero 🢒 Engine 🢒 Engine Controls - 3.4L 🢒 Crankshaft Position Sensor Replacement

Crankshaft Position Sensor Replacement 7X Sensor

Removal Procedure

    Object Number: 15969 Size: SH
  1. Turn OFF the ignition.
  2. Crank steering wheel fully to the left.
  3. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  4. Remove the right tire and wheel. Refer to Tire and Wheel Removal and Installation in Tire and Wheel.
  5. Disconnect the sensor electrical connector.
  6. Remove the attaching bolt/screw.
  7. Remove the sensor from engine.
  8. Inspect for wear, cracks, or leakage if the sensor is not being replaced.

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

    2. Object Number: 15969 Size: SH
  2. Install the sensor to the block.

    3. 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 sensor attaching bolt.

    4. Tighten
    Tighten the bolt to 11 N·m (97 lb in).

  4. Connect the sensor electrical connector.
  5. Install the right tire and wheel. Refer to Tire and Wheel Removal and Installation in Tire and Wheel.
  6. Lower the vehicle.
  7. Perform the CKP System Variation Learn Procedure. Refer to Crankshaft Position System Variation Learn .

Crankshaft Position Sensor Replacement 24X Sensor

Removal Procedure

    Object Number: 14714 Size: SH
  1. Turn OFF the ignition.
  2. Raise the vehicle on hoist. Refer to Lifting and Jacking the Vehicle in General Information
  3. Remove the crankshaft harmonic balancer. Refer to Crankshaft Balancer Replacement in Engine Mechanical.
  4. Note the routing of sensor harness before removal.
  5. Remove the harness retaining clip (3) with bolt (4).
  6. Disconnect the sensor electrical connector.
  7. Remove the sensor bolts (4).
  8. Remove the sensor (1).

Installation Procedure

    Object Number: 14714 Size: SH
  1. Install the 24X crankshaft position sensor (1) with bolts (4) 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.

  2. Install the harness retaining clip (3) with bolt (4).

    3. Tighten
    Tighten the bolts to 10 N·m (89 lb in).

  3. Connect the sensor electrical connector.
  4. Install the balancer on the crankshaft. Refer to Crankshaft Balancer Replacement in Engine Mechanical.
  5. Lower vehicle.
  6. Perform the Crankshaft Position System Variation Learn .