GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 482743  Size: SH
  1. Remove the wiper motor. Refer to Windshield Wiper Motor Replacement .
  2. Remove the 3 screws and the wiper motor cover.

  3. Object Number: 415977  Size: SH

    Important: If the wiper motor is in the park position, operate the wiper motor as required to remove the pawl from the relay slot.

  4. Remove the screw and the park switch assembly.

Installation Procedure


    Object Number: 415977  Size: SH
  1. Install the new park switch assembly and screw.

  2. Object Number: 482743  Size: SH
  3. Operate the wiper motor back into the park position, the pawl in the relay slot.
  4. Important: Ensure that the drive pin is in the open area of the cam.

  5. Install the wiper motor cover.
  6. 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.

  7. Install the 3 screws.
  8. Tighten
    Tighten the screws to 2 N·m (18 lb in).

  9. Install the wiper motor. Refer to Windshield Wiper Motor Replacement .