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

Removal Procedure
  1. Use tape or erasable marker to mark position of wiper blade on rear window.

    2. Object Number: 646291 Size: SH
  2. Remove the cap from the wiper motor (1) spindle.
  3. Remove the nut from the wiper motor (1) spindle.
  4. Remove the wiper arm.
  5. Remove the wiper blade from the wiper arm. Refer to Rear Window Wiper Blade Replacement .

Installation Procedure

    Object Number: 646291 Size: SH
  1. Install the wiper blade onto the wiper arm. Refer to Rear Window Wiper Blade 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.

  2. Install the wiper arm on the wiper motor spindle while aligning the wiper blade with the mark on the rear window.
  3. Install the nut onto the wiper motor spindle.

    4. Tighten
    Tighten the nut to 25 N·m (18.4 lb ft.).

  4. Install the cap to the wiper motor (1) spindle.
  5. Remove the mark from the rear window.
  6. Operate the rear wiper/washer system to check for proper operation.