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:

    Service All-Wheel Drive Light
    This light should come on briefly when you turn on the ignition, as a check to show you it is working. The service all-wheel drive light comes on to indicate that there may be a problem with ...

    Emissions Inspection and Maintenance Programs
    Some state/provincial and local governments have or may begin programs to inspect the emission control equipment on your vehicle. Failure to pass this inspection could prevent you from getting a v ...

    Protecting Exterior Bright Metal Parts
    Regularly clean bright metal parts with water or chrome polish on chrome or stainless steel trim, if necessary. For aluminum, never use auto or chrome polish, steam, or caustic soap to clea ...