GM Service Manual Online
For 1990-2009 cars only

Wheel Speed Sensor Replacement Front Wheel

Removal Procedure


    Object Number: 188809  Size: SH

    Important: The front wheel speed sensors and rings are integral with the hub and bearing assemblies.

    If a speed sensor or a ring needs replacement, replace the entire hub and bearing assembly. Do not service the harness pigtail individually because the harness pigtail is part of the sensor. Refer to in Front Suspension.

  1. Raise and support the vehicle on a suitable hoist. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Remove the front tire and wheel assembly. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  3. Remove the front wheel speed sensor electrical connector (2).

  4. Object Number: 188804  Size: SH
  5. Remove the hub and bearing assembly (2).

Installation Procedure


    Object Number: 188804  Size: SH
  1. Install the hub and bearing assembly (2) to the vehicle.

  2. Object Number: 188809  Size: SH
  3. Install the front wheel speed sensor electrical connector (2).
  4. Install the wheel and tire assembly. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  5. Lower the vehicle.
  6. Turn the ignition switch to the RUN position with the engine off.
  7. Perform the diagnostic system check.

Wheel Speed Sensor Replacement Rear Wheel

Removal Procedure


    Object Number: 305363  Size: SH

    Important: The rear wheel speed sensors and rings are integral with the hub and bearing assemblies.

    If a speed sensor or a ring needs replacement, replace the entire hub and bearing assembly. Refer to rear hub replacement in Rear Suspension.

  1. Raise and support the vehicle on a suitable hoist. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Remove the rear tire and wheel assembly. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  3. Remove the rear wheel speed sensor electrical connector (1) located next to the rear strut (2).

  4. Object Number: 230412  Size: SH
  5. Remove the hub and bearing assembly (1).

Installation Procedure


    Object Number: 230412  Size: SH
  1. Install the hub and bearing assembly (1) to the vehicle.

  2. Object Number: 305363  Size: SH
  3. Install the rear wheel speed sensor electrical connector (1).
  4. Install the wheel and tire assembly. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  5. Lower the vehicle.
  6. Turn the ignition switch to the RUN position with the engine off.
  7. Perform the diagnostic system check.