GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2009 🢒 LaCrosse 🢒 Body Systems 🢒 Wipers and Washers 🢒 Wiper Motor Crank Arm Replacement

Special Tools

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

Removal Procedure
  1. Remove the air inlet grille panel. Refer to Air Inlet Grille Panel Replacement.

    2. Object Number: 306506 Size: SH
  2. Using the J 39232 , disconnect the wiper transmission from the wiper motor crank arm.

    3. Object Number: 334250 Size: SH
  3. Remove the wiper motor crank arm cover.
  4. Remove the wiper motor crank arm screw.
  5. Remove the wiper motor crank arm from the wiper motor.

Installation Procedure

    Object Number: 512040 Size: SH
  1. Position the wiper motor crank arm onto the wiper motor.
  2. Measure the gap between wiper motor crank arm and the bracket tab. If the gap is not 4-8 mm (0.157-0.314 in), remove the wiper motor crank arm and repeat installation.

    3. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 334250 Size: SH
  3. Install the wiper motor crank arm screw.

    4. Tighten
    Tighten the screw to 16 N·m (12 lb ft).

  4. Install the wiper motor crank arm cover.

    5. Object Number: 306515 Size: SH
  5. Using the J 39529 , install the wiper transmission to the wiper motor crank arm.
  6. Install the air inlet grille panel. Refer to Air Inlet Grille Panel Replacement.
  7. Operate the windshield wipers and inspect for proper operation.