See also:

Traffic Options (US and Canada)
Read the following Options descriptions to understand how the XM NavTraffic™ operates. ...

Potential Issues
Some OnStar services are disabled after five days. OnStar cannot perform Remote Door Unlock or Stolen Vehicle Assistance after the vehicle has been off continuously for five days. After five ...

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. ...