GM Service Manual Online
For 1990-2009 cars only

    Object Number: 70087  Size: SH
  1. Remove the wiper blade assemblies from the wiper arms. Refer to Windshield Wiper Blade Replacement .
  2. Look down the length of the blade element. The rubber element (2) that makes contact with the glass must be on the center line of the blade assembly ± 15 degrees (1).
  3. Replace the element if necessary.