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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    Light weight, power-dense engines

    There are many reasons for the ATS’s impressive driving dynamics, though it begins with light weight. Cadillac has boasted since the car’s reveal six months ago that at 3,315 lbs it’s the lighte ...

    Engine Cooling System Messages
    ENGINE HOT A/C (AIR CONDITIONING) OFF This message displays when the engine coolant becomes hotter than the normal operating temperature. See Engine Coolant Temperature Gauge. To avoid add ...

    Erasing Speed Memory
    The cruise control set speed is erased from memory by pressing or if the ignition is turned off. ...