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:

    High-Beam On Light
    This light comes on when the high-beam headlamps are in use. See Headlamp High/Low-Beam Changer for more information. ...

    Cabin Luxury
    The redesigned 2008 CTS was one of the prime examples of GM's renewed commitment to interior quality, and the design has held up well over the past few years; it still looks modern and inviting in ...

    Lockout Deterrent
    Lockout deterrent decreases the chances that the keys may be accidentally locked in the vehicle. When door locking is requested by pressing on the instrument panel or front door panels, or the RK ...