GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 1999 🢒 Bonneville 🢒 Body and Accessories 🢒 Wiring Systems 🢒 Rear Wheel Speed Sensor Replacement

Removal Procedure

    Object Number: 201979 Size: MH
  1. Disconnect the wheel speed sensor connector (2).
  2. Remove the lower strut attaching fasteners (4).
  3. Clean all dirt and debris from sensor housing/sensor interface area.
  4. Remove the mounting fasteners (3).

    5. Important: 

       • Do not allow debris to enter the bearing when the sensor is removed.
       • Do not add lubricant to the bearing through the sensor housing opening. The bearing is lubricated for the life of the vehicle.
       • Do not clean grease from tooted sensor ring. Grease does not affect the sensor operation.

  5. Remove the sensor.

Installation Procedure

    Object Number: 201979 Size: MH
  1. Lubricate new sensor O-ring.
  2. Install the sensor to the housing.

    3. 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.

  3. Install the mounting fasteners (3) in a spiral pattern.

    4. Tighten
    Tighten the mounting fasteners to 2.8 N·m (25 lb in).

  4. Install the lower strut attaching fasteners (4).

    5. Tighten
    Tighten the lower strut attaching fasteners to 190 N·m (140 lb ft).

  5. Connect the wheel speed sensor connector (2).