GM Service Manual Online
For 1990-2009 cars only

Tools Required

    • J 39232 Wiper Transmission Separator
    • J 39529 Wiper Transmission Installer

Removal Procedure


    Object Number: 306506  Size: SH
  1. Remove the air inlet grille panel. Refer to Air Inlet Grille Panel Replacement in Body Front End.
  2. Disconnect the wiper transmission from the wiper motor crank arm using the J 39232 .

  3. Object Number: 334235  Size: SH
  4. Disconnect the electrical connector from the wiper motor.
  5. Remove the screws from the wiper drive system module.
  6. Remove the wiper drive system module from the vehicle.

  7. Object Number: 334241  Size: SH
  8. Remove the screws from the wiper motor cover.
  9. Remove the wiper motor cover from the wiper motor.

Installation Procedure


    Object Number: 334241  Size: SH
  1. Position the wiper motor cover to the wiper motor.
  2. 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 wiper motor cover screws.
  4. Tighten
    Tighten the wiper motor cover screws to 2 N·m (18 lb in).


    Object Number: 334235  Size: SH
  5. Position the wiper drive system module onto the vehicle.
  6. Install the wiper drive system module screws.
  7. Tighten
    Tighten the wiper drive system module screws to 10 N·m (88 lb in).

  8. Connect the electrical connector to the wiper motor.

  9. Object Number: 306515  Size: SH
  10. Connect the wiper transmission to the wiper motor crank arm using the J 39529 .
  11. Install the air inlet grille panel. Refer to Air Inlet Grille Panel Replacement in Body Front End.
  12. Operate the windshield wipers and inspect for proper operation.