Tips and Troubleshooting Chart

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    See also:

    Replacement Bulbs
    For replacement bulbs not listed here, contact your dealer. ...

    LED Lighting
    The vehicle may have LED headlamps. For replacement of the LED lighting assembly contact your dealer. ...

    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 interfer ...