TTY Users
OnStar has the ability to communicate to the deaf, hard–of–hearing, or speech–impaired customers while in the vehicle.
The available dealer–installed TTY system can provide in-vehicle access to all of the OnStar services, except Virtual Advisor and OnStar Turn–by–Turn Navigation.
See also:
CALIBRATING DRIVE IN
CIRCLES
This message displays when
calibrating the compass. Drive the
vehicle in circles at less than 8 km/h
(5 mph) to complete the calibration.
See Compass for more
information. ...
Navigation System
The navigation system provides detailed maps of most major freeways and roads
throughout the United States and Canada. After a destination has been set, the system
provides turn-by-turn instructio ...
Towing with a Stability Control
System
When towing, the sound of the
stability control system might be
heard. The system is reacting to the
vehicle movement caused by the
trailer, which mainly occurs during
cornering. This is nor ...