See also:

Cellular and GPS Antennas
Avoid placing items over or near the antenna to prevent blocking cellular and GPS signal reception. Cellular reception is required for OnStar to send remote signals to the vehicle. ...

Disc Messages
DISC ERROR: If this message displays and/or the disc ejects, it could be for one of the following reasons: - The radio system does not support the playlist format, the compressed audio form ...

Sun Visors
Pull the sun visor down to block glare. Detach the sun visor from the center mount to pivot to the side window, or to extend along the rod, if available. ...