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 for more information.

    See also:

    English and Metric Unit Conversion
    To change the display units between English and metric units, see Driver Information Center (DIC) . ...

    Navigation System
    If the vehicle has a navigation system, use of the system may result in the storage of destinations, addresses, telephone numbers, and other trip information. Refer to the navigation manual ...

    Low-Profile Tires
    If the vehicle has P235/45R18 size tires, they are classified as low-profile tires. Notice: Low-profile tires are more susceptible to damage from road hazards or curb impact than standard profile ...