GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Tools Required

J 39822 Wiper Arm Puller


    Object Number: 514820  Size: SH
  1. Turn the ignition switch to ACCY.
  2. Set the wiper switch to DELAY.
  3. Turn the ignition switch off when the wiper arm is in the innerwipe position and not moving.
  4. Disconnect the washer hose from the nozzle.
  5. Remove the cover from the nut.
  6. Remove the nut from the wiper arm.
  7. Remove the wiper arm from the wiper transmission drive shaft using the J 39822 .
  8. Remove the wiper blade from the wiper arm. Refer to Windshield Wiper Blade Replacement .

Installation Procedure


    Object Number: 514820  Size: SH
  1. Install the wiper blade on the wiper arm. Refer to Windshield Wiper Blade Replacement .
  2. Return the wiper transmission assembly to the park position.
  3. 2.1. Turn the ignition to ACCY.
    2.2. Turn the wiper/washer switch on and then off.
    2.3. Turn the ignition switch OFF.
  4. Install the wiper arm onto the wiper transmission drive shaft.
  5. 3.1. Position the wiper arm slightly below the stop surface of the park ramp.
    3.2. Push the wiper arm down onto the wiper transmission drive shaft completely.

    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.

  6. Install the nut on the wiper arm.
  7. Tighten
    Tighten the nut to 23 N·m (17 lb ft)

  8. Install the cover on the nut.
  9. Lift the wiper arm up onto the park ramp.
  10. Important: Lubricate the hose with windshield washer solvent to ease installation onto the nozzle.

  11. Connect the washer hose onto the nozzle.

Inspection Procedure

    • Inspect the park position. Both wiper arms must be snug against the park ramps.
    • Inspect the wipe pattern. The dimension should be 55-132 mm (2.17-5.20 in) from the tip of the driver's side wiper blade to the edge of the glass in the outerwipe position.
    • The correct park position and outerwipe dimension are determined with the wipers operating at low speed on wet glass.