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 ...

Owner Checks and Services
At Each Fuel Stop - Check the engine oil level. See Engine Oil. Once a Month - Check the tire inflation pressures. See Tire Pressure. - Inspect the tires for wear. See Tire Inspection. - Chec ...

Meet the Wedge
The CTS sedan's exterior is angular, but the new CTS coupe takes the design theme to a new level. There are creases everywhere, and while most meet and intersect to create a unique-looking coupe t ...