GM Service Manual Online
For 1990-2009 cars only

Wheel Speed Sensor Replacement RWD Utility

Removal Procedure

Caution: Refer to Brake Dust Caution in the Preface section.


    Object Number: 388949  Size: SH
  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Remove tire and wheel. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  3. Remove brake caliper. Refer to Front Brake Caliper Replacement in Disc Brakes.
  4. Remove the hub and rotor. Refer to Front Brake Rotor Replacement in Disc Brakes.
  5. Remove wheel speed sensor mounting clip on the control arm.
  6. Remove wheel speed sensor mounting clip on the frame rail.
  7. Disconnect wheel speed sensor electrical connector (2).
  8. Remove the sensor mounting screw (5).
  9. NOTICE: Carefully remove the sensor by pulling it straight out of the bore. DO NOT use a screwdriver, or other device. Prying will cause the sensor body to break off in the bore.

    NOTICE: Do not attempt to remove the stainless steel shim from the bearing assembly. The shim is permanently attached. If the shim is damaged or bent, replace the bearing assembly. Failure to comply will result in diminished sensor and ABS performance.

    Important: The wheel speed sensor mounts into a bore that leads to the center of the sealed bearing. Use caution when cleaning or working around the bore. Do not contaminate the lubricant inside the sealed bearing. Failure to do so can lead to premature bearing failure.

  10. Remove wheel speed sensor from hub and bearing assembly (5).

Installation Procedure

    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.

    Important: The new speed sensor will have a new O-ring. Dispose of the old O-ring. Lubricate the new O-ring lightly with bearing grease prior to installation. You may also lubricate the sensor just above and below the new O-ring. DO NOT lubricate the bore.


    Object Number: 388949  Size: SH
  1. Install sensor into the hub and bearing assembly (6).
  2. Tighten
    Tighten the sensor mounting screw (5) to 18 N·m (13 lb ft).

    Important: The new sensor has new mounting clips already installed on the wire. DO NOT reuse the old clips.

  3. Connect the wheel speed sensor electrical connector (2).
  4. Install wheel speed sensor mounting clip to the frame rail.
  5. Install the wheel speed sensor mounting clip to the control arm.
  6. Install the hub and rotor. Refer to Front Brake Rotor Replacement in Disc Brakes.
  7. Install brake caliper. Refer to Front Brake Caliper Replacement in Disc Brakes.
  8. Install tire and wheel. Refer to Tire and Wheel Removal and Installation in tires and Wheels.
  9. Lower the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.