GM Service Manual Online
For 1990-2009 cars only

Special Tools

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

Removal Procedure


    Object Number: 497992  Size: SH
  1. Remove the wiper arms. Refer to Windshield Wiper Arm Replacement .
  2. Remove the air inlet grille panel. Refer to Air Inlet Grille Panel Replacement .
  3. Disconnect the electrical connector from the wiper motor.

  4. Object Number: 497998  Size: SH
  5. Remove the 4 bolts retaining the wiper transmission assembly to the plenum.

  6. Object Number: 498000  Size: SH
  7. Remove the wiper transmission assembly from the vehicle.

  8. Object Number: 306506  Size: SH
  9. Disconnect the drive link from the wiper motor crank arm using the J 39232 .

  10. Object Number: 498001  Size: SH
  11. Remove the 2 bolts retaining the wiper motor to the transmission.
  12. Remove the wiper motor from the wiper transmission.

Installation Procedure

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 498001  Size: SH
  1. Install the wiper motor onto the wiper transmission with the 2 bolts.
  2. Tighten
    Tighten to 8 N·m (71 lb in).


    Object Number: 306515  Size: SH
  3. Connect the drive link onto the wiper motor crank arm using the J 39529 .

  4. Object Number: 498000  Size: SH
  5. Install the wiper transmission assembly to the plenum.

  6. Object Number: 497998  Size: SH
  7. Install the 4 bolts.
  8. Tighten
    Tighten to 8 N·m (71 lb in).


    Object Number: 497992  Size: SH
  9. Connect the electrical connector to the wiper motor.
  10. Install the air inlet grille panel. Refer to Air Inlet Grille Panel Replacement .
  11. Install the wiper arms. Refer to Windshield Wiper Arm Replacement .
  12. Operate the wipers and inspect for proper operation.