GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 1998 🢒 Grand Prix 🢒 Body and Accessories 🢒 Wipers/Washer Systems 🢒 Windshield Wiper Arm Replacement

Removal Procedure

    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 assembly and the wiper transmission assembly drive shaft.

    7. Important: A J 39822 Wiper Arm Puller may be used if the wiper arm assembly cannot be removed from wiper transmission assembly drive shaft by rocking. The pin from the new wiper arm assembly may be used to ease removal.

  7. Remove the wiper arm assembly from the wiper transmission assembly drive shaft by rocking.

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

Installation Procedure

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

    2. Object Number: 334231 Size: SH
  2. Install the wiper arm assembly on the wiper transmission assembly drive shaft.
    3. 2.1. Put the ignition switch in 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 assembly.
       • The pin, or a same-size drill bit, should be used in the wiper arm assembly during installation.

    2.4. Install the wiper arm assembly on the wiper transmission assembly drive shaft while maintaining the following distances:
       • RH 97-107 mm (3.82-4.21 in) from the end of the wiper arm to the 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.

  3. Install the nut onto the wiper transmission assembly drive shaft and the wiper arm assembly.

    4. Tighten
    Tighten the nut to 27 N·m (20 lb ft).

  4. Install the pin from wiper arm assembly.
  5. Install the cover on the nut.

    6. Important: Lubricate the washer hose with the windshield washer solvent to ease the installation on the washer nozzle.

  6. Install the washer hose onto the washer nozzle.

    7. Operate the wipers and check for proper operation.