GM Service Manual Online
For 1990-2009 cars only
  1. Clean the inside of the windshield as needed to remove any dirt or film that reduces the sharpness or clarity of the head up display (HUD) image.
  2. Important: Do not spray cleaner directly on the HUD lens. Cleaner could leak into the HUD.

  3. To clean the HUD, spray household glass cleaner on a soft, clean cloth. Wipe the HUD lens gently, then dry it.