GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Tools Required

J 39822 Wiper Arm Puller


    Object Number: 334231  Size: SH
  1. Turn the ignition switch to the ACCY position.
  2. Set the wiper switch to the PULSE position.
  3. Turn the ignition off when wiper arms are at the bottom of the wipe pattern (innerwipe) and not moving.
  4. Remove the washer hose from the washer nozzle.
  5. Remove the cover from the nut.
  6. Remove the nut from the wiper arm and the wiper transmission drive shaft.
  7. Important: A J 39822 Wiper Arm Puller may be used if the wiper arm cannot be removed from wiper transmission drive shaft by rocking. The pin from the new wiper arm may be used to ease removal.

  8. Remove the wiper arm from the wiper transmission drive shaft by rocking.

  9. Object Number: 306449  Size: SH
  10. Remove the wiper blade from wiper arm.
  11. 8.1. Push in the button of the wiper blade clip and remove the wiper blade from inside radius of wiper arm.
    8.2. Bring the wiper arm out through the opening in the wiper blade.

Installation Procedure


    Object Number: 306449  Size: SH
  1. Install the wiper blade on the wiper arm.

  2. Object Number: 334231  Size: SH
  3. Install the wiper arm on the wiper transmission drive shaft.
  4. 2.1. Turn the ignition switch to the ACCY position.
    2.2. Set the wiper switch to the PULSE position. The windshield wiper system should be operating.
    2.3. Turn the ignition off when the wiper drive system is at the bottom of its wipe cycle (innerwipe) and not moving.

            Important: 
       • The measuring device must be held at 90° (perpendicular) to the wiper blade.
       • The pin, or a same-size drill bit, should be used in the wiper arm during installation.

    2.4. Install the wiper arm on the wiper transmission drive shaft while maintaining the following distances:
           - RH 97-107 mm (3.82-4.21 in) from end of the wiper arm, to air inlet screen.
           - LH 125-147 mm (4.92-5.78 in) from the wiper blade tip to the air inlet screen.

    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.

  5. Install the nut onto the wiper transmission drive shaft and the wiper arm.
  6. Tighten
    Tighten the nut to 30 N·m (22 lb ft).

  7. Install the pin from wiper arm.
  8. Install the cover on the nut.
  9. Important: Lubricate the washer hose with the windshield washer solvent to ease the installation on the washer nozzle.

  10. Install the washer hose onto the washer nozzle.
  11. Operate the wipers and check for proper operation.