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:
Transmission
Electronic Range Select (ERS) Mode
ERS mode allows you to choose the top-gear limit of the transmission and the vehicle's speed while driving downhill or towing a trailer.
The vehicle has an electro ...
Delayed Headlamps
Delayed headlamps provide a period of exterior lighting as you leave the area around the vehicle.
This feature is activated when the headlamps are on due to the automatic headlamps control feature, a ...
Compass Zone
The zone is set to zone eight upon leaving the factory. Your dealer will set the correct zone for your location.
Under certain circumstances, such as during a long distance cross-country trip or movi ...