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:

    Engine Oil Messages
    CHANGE ENGINE OIL SOON This message displays when the engine oil needs to be changed. When you change the engine oil, be sure to reset the Oil Life System. See Engine Oil Life System  and Dr ...

    Recalling Button Memory Positions
    To recall the manually saved Button Memory positions, press and hold “1” or “2.” The driver seat and outside mirrors move to the positions stored to those buttons when pressed. Relea ...

    Lockout Protection
    If the key is in the ignition and the power door lock switch is used to lock the doors, all doors will lock and then the driver door will unlock. It is always recommended that the ignition key i ...