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 arm assemblies from the wiper transmission assembly drive shafts. Refer to Windshield Wiper Arm Replacement .
  2. Remove the air inlet screen assembly from the vehicle. Refer to Air Inlet Grille Panel Replacement .
  3. Remove the connector from the wiper motor assembly.
  4. Remove the wiper transmission assembly from wiper motor crank arm assembly using the J 39232 Wiper Transmission Separator.

  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 assembly.
  10. Remove four screws and the wiper transmission assembly from the tube frame.
  11. Remove the wiper motor assembly 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 assembly 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 assembly 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 assembly.

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

  8. Object Number: 334235  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.

  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 assembly on the wiper motor crank arm assembly using the J 39529 Wiper Transmission Installer.
  12. Install the connector onto the wiper motor assembly.
  13. Install the air inlet screen assembly on the vehicle. Refer to Air Inlet Grille Panel Replacement .
  14. Install the wiper arm assemblies onto the wiper transmission assembly drive shafts. Refer to Windshield Wiper Arm Replacement .
  15. Operate the wipers and check for proper operation.