See also:

Roadside Service (U.S. and Canada)
U.S.: 1-800-224-1400 Canada: 1-800-882-1112. Text Telephone (TTY) Users (U.S. Only): 1-888-889-2438. Service is available 24 hours a day, 365 days a year. ...

Reactivation for Subsequent Owners
Push and follow the prompts to speak to an Advisor as soon as possible after acquiring the vehicle. The Advisor will update vehicle records and will explain the OnStar service offers and opt ...

Cadillac CTS-V Review
In an effort to take advantage of its recent return to popularity, Cadillac decided to build high-performance versions of several of its cars. Collectively called the V-Series, they are meant to be ...