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:
Muting a Call
To Mute a Call
Turn or press the MENU/SELECT knob and select Mute Call.
To Cancel Mute
Turn or press the MENU/SELECT knob and select Mute Call. ...
Starting the Vehicle with a Low Transmitter Battery
Replace the battery if the REPLACE
BATTERY IN REMOTE KEY
message displays in the DIC.
See “Replace Battery In Remote
Key” under Key and Lock Messages for additional
information.
If the trans ...
Transmission Messages
SERVICE TRANSMISSION
This message displays if there is a problem with the transmission.
See your dealer.
SHIFT DENIED
This message displays when using the Driver Shift Control (DSC) and
a ...