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:

    Door Ajar Messages
    DRIVER DOOR OPEN This message may display when the driver door is open. Close the door completely. HOOD OPEN This message will display when the hood is open. Close the hood completely. LEFT REAR D ...

    Door Ajar Light
    For vehicles equipped with this light, it comes on when a door is open or not securely latched. Before driving, check that all doors are properly closed. See Door Ajar Messages  for more in ...

    Service
    Your dealer knows your vehicle best and wants you to be happy with it. We hope you will go to your dealer for all your service needs. You will get genuine GM parts and GM-trained and supported ser ...