GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Tools Required

J 39232 Wiper Transmission Separator.


    Object Number: 306506  Size: SH
  1. Remove the wiper arms from the wiper transmission drive shafts. Refer to Windshield Wiper Arm Replacement .
  2. Remove the air inlet grille panel from the vehicle. Refer to Air Inlet Grille Panel Replacement .
  3. Remove the connector from the wiper motor.
  4. Remove the wiper transmission from wiper motor crank arm using the J 39232 .

  5. Object Number: 334235  Size: SH
  6. Remove three screws and the wiper drive system module from the vehicle.
  7. Remove three grommets from the tube frame.

  8. Object Number: 334247  Size: SH
  9. Remove two caps from the wiper transmission.
  10. Remove four screws and the wiper transmission from the tube frame.
  11. Remove the wiper motor and crank arm from the tube frame. Refer to Windshield Wiper Motor Replacement .

Installation Procedure

Tools Required

J 39529 Wiper Transmission Installer.


    Object Number: 334247  Size: SH
  1. Install the wiper motor and crank arm onto the tube frame. Refer to Windshield Wiper Motor Replacement .
  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 transmission on the tube frame with four screws.
  4. Tighten
    Tighten the screws to 9 N·m (80 lb in).

  5. Install two new caps onto the wiper transmission.

  6. Object Number: 334242  Size: SH
  7. Install three grommets onto the tube frame.

  8. Object Number: 334235  Size: SH
  9. Install the wiper drive system module on the vehicle with three screws.
  10. Tighten
    Tighten the screws to 10 N·m (88 lb in).


    Object Number: 306515  Size: SH
  11. Install the wiper transmission on the wiper motor crank arm using the J 39529 .
  12. Install the connector onto the wiper motor.
  13. Install the air inlet grille panel on the vehicle. Refer to Air Inlet Grille Panel Replacement .
  14. Install the wiper arms onto the wiper transmission drive shafts. Refer to Windshield Wiper Arm Replacement .
  15. Operate the wipers and check for proper operation.