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 and blades. Refer to Windshield Wiper Arm Replacement .
  2. Remove the air inlet grille panel. Refer to Air Inlet Grille Panel Replacement .
  3. Disconnect the transmission drive link sockets from the wiper motor crank arm and the transmission drive shafts using the J 39232 Wiper Transmission Separator.

  4. Object Number: 415978  Size: SH
  5. Remove six screws.

  6. Object Number: 415979  Size: SH
  7. Remove the transmission drive shafts and drive links by guiding them through the access hole in the shroud upper panel.

Installation Procedure

Tools Required

J 39529 Wiper Transmission Installer


    Object Number: 415979  Size: SH
  1. Install the transmission drive shafts by positioning them in the plenum chamber through the shroud upper panel openings.

  2. Object Number: 306515  Size: SH
  3. Install the drive links on the drive shafts using the J 39529 Wiper Transmission Installer.
  4. 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.


    Object Number: 415978  Size: SH
  5. Install the transmission with the drive shafts positioned through the drive shaft clearance holes.
  6. Install six screws.
  7. Tighten
    Tighten the screws to 8 N·m (71 lb in).


    Object Number: 306515  Size: SH

    Important: The socket must be fully seated on the ball.

  8. Install the transmission drive link socket to the wiper motor crank arm ball using the J 39529 Wiper Transmission Installer.
  9. Install the air inlet grille panel. Refer to Air Inlet Grille Panel Replacement .
  10. Install the wiper arms. Refer to Windshield Wiper Arm Replacement .