GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2008 🢒 Optra 🢒 Brakes 🢒 Antilock Brake System 🢒 Front Wheel Speed Sensor Replacement

Removal Procedure

    Caution: Refer to Battery Disconnect Caution in the Preface section.


    Object Number: 1290258 Size: SH
  1. Disconnect the negative battery cable.
  2. Disconnect the front wheel speed sensor electrical connector.

    3. Caution: Refer to Vehicle Lifting Caution in the Preface section.

  3. Raise and suitably support the vehicle.
  4. Remove the wheel. Refer to Tire and Wheel Removal and Installation .
  5. Turn the steering wheel to expose the speed sensor. It is located at the rear of the steering knuckle near the tie rod end.
  6. Remove the bolt and the front wheel speed sensor from the steering knuckle.

    7. Object Number: 1290259 Size: SH
  7. Free the feed-through grommet for the speed sensor harness and the hydraulic pipe from the strut tower. Remove the speed sensor harness from it so that the connector can pass through the hole in the strut tower.
  8. Free the sensor harness from the grommet holders and the clamps and pull it through the fender.

Installation Procedure

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1290258 Size: SH
  1. Install the front wheel speed sensor to the steering knuckle. Secure it with the bolt.

    2. Tighten
    Tighten the front wheel speed sensor bolt to 8 N·m (71 lb in).


    Object Number: 1290259 Size: SH
  2. Feed the sensor harness into the engine compartment, insert it into the grommet, and secure the grommet into the hole in the strut tower.
  3. Secure the harness into the grommet holders and the clamps under the fender.
  4. Install the wheel. Refer to Tire and Wheel Removal and Installation .
  5. Lower the vehicle.
  6. Connect the front wheel speed sensor electrical connector.
  7. Connect the negative battery cable.