GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2000 🢒 Montana Ext. 🢒 Body and Accessories 🢒 Wipers/Washer Systems 🢒 Rear Window Wiper Motor Replacement

Removal Procedure

    Object Number: 512045 Size: SH
  1. Remove the nut from the wiper motor drive shaft.
  2. Remove the washer and seal from the wiper motor drive shaft.
  3. Remove the liftgate trim panel. Refer to Liftgate Trim Panel Replacement in Body Rear End.
  4. Disconnect the electrical connector from the wiper motor.
  5. Remove the two screws and the wiper motor from the liftgate.

    6. Object Number: 512047 Size: MH
  6. Remove the wiper motor cover.
  7. Remove the circuit board from the wiper motor.
  8. Remove the screw and the bracket from the wiper motor.
  9. Remove the insulator from the wiper motor.
  10. Remove the seal and the spacer from the wiper motor.

Installation Procedure

    Object Number: 512047 Size: MH
  1. Install the spacer and the seal onto the wiper motor.
  2. Install the insulator onto the wiper motor.

    3. 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 bracket onto the wiper motor with the screw.

    4. Tighten
    Tighten the screw to 8 N·m (71 lb in).

  4. Install the circuit board into the wiper motor.
  5. Install the wiper motor cover.

    6. Object Number: 512045 Size: SH
  6. Install the wiper motor onto the liftgate with the two screws.

    7. Tighten
    Tighten the screw to 5.5 N·m (49 lb in).

  7. Connect the electrical connector to wiper motor.
  8. Install the liftgate trim panel. Refer to Liftgate Trim Panel Replacement in Body Rear End.
  9. Install the washer and seal onto the wiper motor drive shaft.
  10. Install the nut onto the wiper motor drive shaft.

    11. Tighten
    Tighten the screw to 6 N·m (53 lb in).