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:
If a Tire Goes Flat
It is unusual for a tire to blow out while driving, especially if the tires are
maintained properly. See Tires . If air goes out of a tire, it is much
more likely to leak out slowly. But if ...
Fog Lamps
For vehicles with fog lamps, they can be used for better vision in foggy or misty
conditions. The parking lamps and/or low-beam headlamps must be on for the fog lamps
to work.
The fog lamp butt ...
All-Wheel Drive
If the vehicle has this feature, engine power is sent to all four wheels when
extra traction is needed. This is like four-wheel drive, but there is no separate
lever or switch to engage or disenga ...






