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.

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    Engine Exhaust
    WARNING Engine exhaust contains carbon monoxide (CO) which cannot be seen or smelled. Exposure to CO can cause unconsciousness and even death. Exhaust may enter the vehicle if: The vehicl ...

    Vehicle Speed Messages
    SELECTED SPEED LIMIT EXCEEDED This message is displayed when the vehicle speed is greater than the set speed. See "Speed Warning" under Driver Information Center (DIC). ...

    Driving on Wet Roads
    Rain and wet roads can reduce vehicle traction and affect your ability to stop and accelerate. Always drive slower in these types of driving conditions and avoid driving through large puddles ...