See also:

Error Messages
If Disc Read Error displays and/or the disc comes out, it could be for one of the following reasons: • The disc has an invalid or unknown format. • The disc is not from a correct region. ...

Warranty
OnStar equipment may be warranted as part of the new-vehicle limited warranty. The manufacturer of the vehicle furnishes detailed warranty information. ...

Chemical Paint Spotting
Airborne pollutants can fall upon and attack painted vehicle surfaces causing blotchy, ring-shaped discolorations, and small, irregular dark spots etched into the paint surface. ...