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:

    Pulling a Trailer
    Here are some important points: - There are many laws, including speed limit restrictions that apply to trailering. Check for legal requirements with state or provincial police. - Do not tow ...

    Increasing Speed While Using Cruise Control
    If the cruise control system is already activated: - Press and hold the +RES button on the steering wheel until the desired speed is reached, then release it. - To increase vehicle speed in ...

    Lumbar Adjustment
    To adjust the lumbar support: Press and hold the front or rear of the control to increase or decrease lumbar support. Press and hold the top or bottom of the control to raise or lower the ...