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:
Using the “Digit Dial” Command
The digit dial command allows a phone number to be dialed by entering the digits one at a time.
After each digit is entered, the system repeats back the digit it heard followed by a tone.
If an unwa ...
All-Wheel Drive
Vehicles with this feature always send engine power to all four wheels. It is
fully automatic, and adjusts itself as needed for road conditions.
When using a compact spare tire on an AWD vehicle, t ...
Battery Replacement
Replace the battery if the REPLACE BATTERY IN REMOTE KEY message displays in
the DIC. See ЃgReplace Battery in Remote KeyЃh under Key and Lock Messages on page
5.29.
The battery is not recharge ...