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Home >> Chevrolet >> 2004 >> Optra Base, Standard >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System >> Repair Instructions >> Rear Wheel Speed Sensor Replacement >> Removal Procedure
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Removal Procedure

    Fig 1: View Of Rear Wheel Speed Sensor Electrical Connector
    GM1255824Courtesy of GENERAL MOTORS CORP.
    CAUTION: Refer to Battery Disconnect Caution in Cautions and Notices.
  1. Disconnect the negative battery cable.
    2. CAUTION: Refer to Vehicle Lifting Caution in Cautions and Notices.
  2. Raise and suitably support the vehicle.
  3. Disconnect the rear wheel speed sensor electrical connector.
    4. Fig 2: View Of Rear Hub Unit
    GM1255825Courtesy of GENERAL MOTORS CORP.
  4. Remove the rear hub unit from the knuckle assembly, because the wheel speed sensor is not serviceable separately.
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