GM Service Manual Online
For 1990-2009 cars only

Special Tools

J 39637 Wiper Arm Puller

Removal Procedure


    Object Number: 751297  Size: SH
  1. Open the hood.
  2. Remove the wiper arm nut cap(s) and discard.

  3. Object Number: 1272639  Size: SH
  4. Remove the wiper arm nut (2) from the wiper arm (1).

  5. Object Number: 1272631  Size: SH
  6. Using a J 39637 or equivalent, remove the wiper arm from the wiper arm pivot shaft if the wiper arm fails to release from the pivot shaft with a rocking motion.

  7. Object Number: 1272629  Size: SH
  8. Release the wiper arm blade (2) from the wiper arm (1).

  9. Object Number: 1272640  Size: SH
  10. Clean the pivot shaft knurls (1) with a soft wire brush.

Installation Procedure


    Object Number: 1272629  Size: SH
  1. Install the wiper arm blade (2) to the new wiper arm (1).

  2. Object Number: 1272638  Size: SH
  3. Lift the wiper blade off the windshield and install the wiper arm (1) to the wiper arm pivot shaft (2).
  4. Align the tip of the wiper blade with the round dot in the blackout area of the windshield.

  5. Object Number: 1272636  Size: SH
  6. For the passenger side blade (2), ensure the wiper blade tip is held in position to the alignment dot (1) on the windshield.

  7. Object Number: 1272632  Size: SH
  8. For the driver side blade (2), ensure the wiper blade tip is held in position to the alignment dot (1) on the windshield.
  9. Holding the wiper blade to the windshield dot, install the wiper arm nut.
  10. Caution: Refer to Fastener Caution in the Preface section.

  11. Continue holding the wiper blade in position while tightening the nut.
  12. Tighten
    Tighten the wiper arm nut to 33-38 N·m (24-28 lb ft).

  13. Install new wiper arm nut covers.
  14. Close the hood.