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:

    Power Door Locks
    With power door locks, the switches on the front doors can be used to lock and unlock the vehicle. If available, the switches are on the front doors. (Unlock): Press to unlock the doors. (Lock): Pr ...

    Sunroof (Extended Cab)
    Sunroof (Extended Cab) On vehicles with a sunroof, the sunroof only operates when the ignition is in the ACC/ACCESSORY or ON/RUN or the Retained Accessory Power (RAP) is active. See Retained Acces ...

    Dual Automatic Climate Control System
    The heating, cooling, and ventilation in the vehicle can be controlled with this system. The vehicle also has a flow-through ventilation system described later in this section. A. Driver and Passeng ...