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:
California Fuel
If your vehicle is certified to meet California
Emissions Standards, it is designed to operate
on fuels that meet California specifications.
See the underhood emission control label.
If this f ...
Setting the 12/24 Hour Format
1. Press the CONFIG button and
select Time Settings,
or press .
2. Highlight 12/24 Hour Format.
3. Press SELECT to select the
12 hour or 24 hour display
format. ...
Content Theft-Deterrent
Your vehicle may have the optional content
theft-deterrent alarm system.
To activate the theft-deterrent system:
1. Open the door.
2. Lock the door with the power door lock switch
or the Remote ...