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:
Uniform Tire Quality Grading
Quality grades can be found where applicable on the tire sidewall between tread
shoulder and maximum section width. For example: ...
StabiliTrak® System
The vehicle may have a vehicle stability enhancement system called StabiliTrak. It is an advanced computer-controlled system that assists with directional control of the vehicle in difficult driving c ...
Rear Window Defogger
The rear window defogger uses a warming grid to
remove fog from the rear window.
(Rear): Press this button
to turn the rear
window defogger on or off.
An indicator light in the button will co ...