OnStar®

If equipped, this vehicle has a comprehensive, in-vehicle system that can connect to a live Advisor for Emergency, Security, Navigation, Connection, and Diagnostic Services. See OnStar Overview.

    See also:

    System Settings
    CONFIG: Press to adjust the number of favorites pages, auto volume, XM (if equipped), and HDD (if available) settings. The FAV, AUTO VOL, XM (if equipped), and HDD (if available) tabs displa ...

    Roadside Service (U.S. and Canada)
    U.S.: 1-800-224-1400 Canada: 1-800-882-1112. Text Telephone (TTY) Users (U.S. Only): 1-888-889-2438. Service is available 24 hours a day, 365 days a year. ...

    Tachometer
    The tachometer displays the engine speed in revolutions per minute (rpm). ...