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 Security
This vehicle has theft-deterrent features; however, they do not make it impossible to steal. ...
Global Off
Depending on the infotainment system, the RSE system may have a Global Off feature.
The Global Off feature disables all RSE system features. Press and hold the radio
power button for more than thr ...
Easy Exit Driver Seat
This feature can move the seat rearward to allow extra room to exit the vehicle.
(Easy Exit Driver Seat): Press to recall the easy exit seat position.
The vehicle must be in P (Park).
If the easy ...