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:
Control of a Vehicle
Braking, steering, and accelerating are important factors in helping to control
a vehicle while driving. ...
Services Not Included in Roadside Assistance
• Impound towing caused by violation of any laws.
• Legal fines.
• Mounting, dismounting, or changing of snow tires, chains, or other traction devices.
• Towing or services for vehicles dri ...
Reducing Speed While Using Cruise Control
If the cruise control system is already activated:
• Press and hold the SET– button on the steering wheel until the lower speed desired is reached, then release it.
• To slow down in small amo ...