Unable to Connect to OnStar Message
If there is limited cellular coverage
or the cellular network has reached
maximum capacity, this message
may come on. Push 
to try the
call again or try again after driving a
few miles into another cellular area.
See also:
Radio Menus
Radio menus are available for AM and FM.
Turn the MENU/SELECT knob to open the main radio menu for that frequency. ...
Control Buttons
The knobs and buttons used to
control the radio are:
FM/AM: Press to choose between
FM and AM.
TUNE/TONE: Turn to search for
stations.Press to enter the
Tone menu.
MENU/SELECT: Turn clockwi ...
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 ...