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:

    USB Port
    The following devices may be connected to the USB port and controlled by the infotainment system. - iPods - USB Mass Storage Devices Not all iPods or USB Mass Storage Devices are compatible wi ...

    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 there is ...

    Up-Shift Light
    The vehicle may have an up-shift light. It indicates when to shift to the next higher gear for best fuel economy. See Manual Transmission for more information. For the CTS-V, the tracer ligh ...