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. ...

Safety Locks
Safety Locks Press o to activate the safety locks on the rear doors. The LED (A) comes on when activated. The rear door power windows are also disabled. Press o again to deactivate the ...

MP3 CD-R or CD-RW Disc
The radio may have MP3 capability. With this feature, the radio plays MP3 files that were recorded on a CD-R or CD-RW disc. Song title, artist name, and album can display when files are recorded ...