See also:

Vehicle and Power Issues
OnStar services require a vehicle electrical system, wireless service, and GPS satellite technologies to be available and operating for features to function properly. These systems may not o ...

Magnetic Ride Control
The V-Series reaches elite levels of road-holding performance, but also maintains the poise of a luxury car in "regular" driving conditions. The technical enabler of that dual-mode drivi ...

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. ...