Add-on Electrical Equipment

The OnStar system is integrated into the electrical architecture of the vehicle. Do not add any electrical equipment. See Add-On Electrical Equipment. Added electrical equipment may interfere with the operation of the OnStar system and cause it to not operate.

    See also:

    Using Cruise Control on Hills
    How well the cruise control works on hills depends on the vehicle speed, the load, and the steepness of the hills. When going up steep hills, pressing the accelerator pedal may be necessary to mai ...

    Cruise Control Messages
    CRUISE SET TO XXX MPH (KM/H) This message displays whenever the cruise control is set. See Cruise Control for more information. ...

    Exiting the Feature Settings Menu
    The feature settings menu will be exited when any of the following occurs: - The vehicle is no longer in ON/RUN. - The trip/fuel or vehicle information DIC buttons are pressed. - The end ...