See also:

OnStar®
If the vehicle is equipped with an active OnStar system, that system may also record data in crash or near crash-like situations. The OnStar Terms and Conditions provides information on data colle ...

V-6 Power
The CTS coupe's standard 3.6-liter V-6 moves this two-door smartly enough, but it doesn't necessarily feel like there's a 304-horsepower engine under the hood. With a curb weight of around 4,000 p ...

Trunk (Sedan, Coupe)
WARNING! Exhaust gases can enter the vehicle if it is driven with the liftgate or trunk/hatch open, or with any objects that pass through the seal between the body and the trunk/hatch or ...