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:

    Auto Rear Defog
    If equipped, this will allow you to turn the auto rear defog on or off. This feature will automatically turn on the rear defogger when it is cold outside. Press SELECT when Auto Rear Defog i ...

    Battery Power Protection
    The battery saver feature is designed to protect the vehicle's battery. If the exterior lamps or any interior light is left on and the ignition is turned off, the battery rundown protection ...

    Control of a Vehicle
    You have three systems that make your vehicle go where you want it to go. They are the brakes, the steering, and the accelerator. All three systems have to do their work at the places where the ...