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:
Calibrate Compass
The vehicle may have this feature.
The compass can be manually
calibrated. To calibrate the compass
through the DIC, see Compass. ...
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Sound Menu
(Sound): Press this key or press
CONFIG to access the Sound menu to adjust the treble, midrange, bass, fade, balance,
and Digital Signal Processing (DSP). The system automatically stores audio ...