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:

    Lamp Messages
    SERVICE LEFT HEADLAMP ASSEMBLY On some models, this message will be displayed when the left headlamp is out and needs to be serviced. See “LED Lighting” in LED Lighting   for more infor ...

    Programming Universal Home Remote — Fixed Code
    For questions or help programming the Universal Home Remote System, call 1-866-572-2728 or go to www.learcar2u.com. Most garage door openers sold before 1996 are Fixed Code units. Programming a ga ...

    CALIBRATION COMPLETE
    This message displays when the compass calibration is complete. See Compass for more information. ...