OnStar Services

See also:

Reporting Safety Defects to General Motors
In addition to notifying NHTSA (or Transport Canada) in a situation like this, notify General Motors. Call 1-800-458-8006, or write: Cadillac Customer Assistance Center Cadillac Motor Car Divi ...

All-Wheel Drive
Transfer Case When to Check and Change Lubricant The transfer case is filled with oil during manufacture, which then does not require changing. It is not necessary to regularly check the transf ...

Steering Wheel Controls
If available, some audio controls can be adjusted at the steering wheel. : Press to go to the next favorite radio station, track on a CD, or folder on an iPod® or USB device. : Press to go to ...