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:
Parking over Things That Burn
WARNING!
Things that can burn could touch
hot exhaust parts under the
vehicle and ignite. Do not park
over papers, leaves, dry grass,
or other things that can burn. ...
Receiving a Call
When an incoming call is received, the audio system
mutes and a ring tone is heard in the vehicle.
• Press and begin speaking to
answer the call.
• Press to ignore a call. ...
Hill and Mountain Roads
Driving on steep hills or through mountains is different than driving on flat or rolling terrain. Tips for driving in these conditions include:
► Keep the vehicle serviced and in good shape.
...