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:
Vehicle Storage
WARNING
Batteries have acid that can burn you and gas that can explode.
You can be badly hurt if you are not careful. See Jump Starting on page 10‑92 for tips on working around a battery witho ...
Dual Tone Multi-Frequency (DTMF) Tones
The Bluetooth system can send numbers and the numbers stored as name tags during a call. You can use this feature when calling a menu-driven phone system.
Account numbers can also be stored for use.
...
Airbag Readiness Light
This light shows if there is an electrical problem. The system check includes
the airbag sensor(s), passenger sensing system, the pretensioners, the airbag modules,
the wiring, and the crash sensi ...