TTY Users

OnStar has the ability to communicate to the deaf, hard&-ofhearing, 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:

    Accessories and Modifications
    Adding non-dealer accessories or making modifications to the vehicle can affect vehicle performance and safety, including such things as airbags, braking, stability, ride and handling, emissions syste ...

    Compass Variance (Zone) Procedure
    1. Do not set the compass zone when the vehicle is moving. Only set it when the vehicle is in P (Park). Press the vehicle information button until PRESS TO CHANGE COMPASS ZONE displays. Or, if the v ...

    Exiting the Feature Settings Menu
    The feature settings menu will be exited when any of the following occurs: • The vehicle is shifted out of P (Park). • The vehicle is no longer in ON/RUN. • The trip/fuel or vehicle informati ...