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:
Radio Reception
Frequency interference and static can occur during normal radio reception if items such as cell phone chargers, vehicle convenience accessories, and external electronic devices are plugged into the ac ...
DIC Buttons
The buttons are the set/reset, customization, vehicle information, and trip/fuel buttons. The button functions are detailed in the following pages.
(Set/Reset): Press this button to set or reset c ...
Exterior
There's hybrid badging on the cab's rear window, ahead of the side mirrors
and on the tailgate, but otherwise the hybrid version looks similar to the
gas-powered version. ...