GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2005 🢒 Optra 🢒 General Information 🢒 General Information 🢒 Rear Wheel Speed Sensor Replacement

Removal Procedure

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


    Object Number: 1255824 Size: SH
  1. Disconnect the negative battery cable.

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

  2. Raise and suitably support the vehicle.
  3. Disconnect the rear wheel speed sensor electrical connector.

    4. Object Number: 1255825 Size: SH
  4. Remove the rear hub unit from the knuckle assembly, because the wheel speed sensor is not serviceable separately.

Installation Procedure

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1255824 Size: SH
  1. Install the rear hub unit to the knuckle assembly.

    2. Tighten
    Tighten the rear hub unit to the knuckle assembly to 65 N·m (48 lb ft).

  2. Connect the rear wheel speed sensor electrical connector.