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:

    Brake Fluid
    The brake master cylinder reservoir is filled with DOT 3 brake fluid as indicated on the reservoir cap. See Engine Compartment Overview for the location of the reservoir. There are only two ...

    Obstacle Detection Features
    If the liftgate encounters an obstacle during a power open or close cycle, a warning chime will sound and the liftgate will automatically reverse direction to the full closed or open position. Af ...

    Lumbar Adjustment
    If available, hold the control on the outboard side of the seat forward or rearward to increase or decrease the lumbar support on the driver or front passenger seat. A. Side Bolster Adjus ...