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:
Fuel Gage
When the ignition is on, the fuel gage tells you
about how much fuel you have remaining.
Here are four things that some owners ask about.
None of these show a problem with your fuel gage:
...
DIC Vehicle Customization
Your vehicle has customization capabilities that allow
you to program certain features to one preferred setting.
Customization features can only be programmed to
one setting on the vehicle and ca ...
Horn
Press near or on the horn symbols on your
steering wheel pad to sound the horn. ...