GM Service Manual Online
For 1990-2009 cars only

Wheel Speed Sensor Replacement Front

Removal Procedure


    Object Number: 221758  Size: SH
  1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General information.
  2. Remove the Front wheel. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  3. Disconnect the front wheel speed sensor electrical connector.
  4. Remove the retaining bolt.
  5. Remove the front wheel speed sensor (1) from the steering knuckle (2).

Installation Procedure


    Object Number: 221758  Size: SH

    Important: Make sure that the front wheel speed sensor (1) is properly aligned and lays flat against the bosses on the knuckle (2).

  1. Install the front wheel speed sensor (1) to the steering knuckle (2).
  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 retaining bolt.
  4. Tighten
    Tighten the retaining bolt to 10 N·m (86 lb in).

  5. Connect the front wheel speed sensor electrical connector.
  6. Install the Front wheel. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  7. Lower the vehicle.
  8. Perform the Diagnostic System Check - ABS .

Wheel Speed Sensor Replacement Rear

Removal Procedure


    Object Number: 221832  Size: SH
  1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General information.
  2. Remove the Rear wheel. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  3. Disconnect the rear wheel speed sensor electrical connector (2).
  4. Remove the retaining bolt (1).
  5. Remove the rear wheel speed sensor (3) from the rear suspension knuckle.

Installation Procedure


    Object Number: 221832  Size: SH
  1. Install the rear wheel speed sensor (3) to the rear suspension knuckle.
  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 retaining bolt (1).
  4. Tighten
    Tighten the retaining bolt (1) to 10 N·m (86 lb in).

  5. Connect the rear wheel speed sensor electrical connector (2).
  6. Install the Rear wheel. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  7. Lower the vehicle.
  8. Perform the Diagnostic System Check - ABS .