GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Remove the wiper arms. Refer to Windshield Wiper Arm Replacement .
  2. Remove the plenum chamber water deflector. Refer to Plenum Water Deflector Replacement in Body Front End.

  3. Object Number: 640747  Size: SH
  4. Remove the three screws and the wiper motor cover from the wiper motor.
  5. Disconnect the electrical connector from the wiper motor.

Installation Procedure


    Object Number: 640747  Size: SH

    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.

  1. Install the wiper motor cover onto the wiper motor with the three screws.
  2. Tighten
    Tighten the three screws to 2 N·m (18 lb in).

  3. Install the plenum chamber water deflector. Refer to Plenum Water Deflector Replacement in Body Front End.
  4. Install the wiper arms. Refer to Windshield Wiper Arm Replacement .
  5. Operate the wipers and inspect for proper operation.