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:
Remote Window Operation
The vehicle may have remote operating windows that will open all the windows
from outside the vehicle by pressing and holding on the Remote Keyless
Entry (RKE) transmitter. ...
Driving in Mud, Sand, Snow, or Ice
Use a low gear when driving in mud – the deeper the mud, the lower the gear.
Keep the vehicle moving to avoid getting stuck.
Traction changes when driving on sand. On loose sand, such as on beaches ...
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 for tips on working
around a battery witho ...