See also:

Before Driving Off-Road
• Have all necessary maintenance and service work completed. • Fuel the vehicle, fill fluid levels, and check inflation pressure in all tires, including the spare, if equipped. • Read all the ...

Roadside Assistance Program
U.S.: 1-888-881-3302 TTY Users (U.S.): 1-888-889-2438 Canada: 1-800-268-6800 Mexico: 01-800-466-0801 As the owner of a new GMC, you are automatically enrolled in the Roadside Assistance program. ...

Transferring Service
Push to request account transfer eligibility information. The Advisor can assist in canceling or removing account information. If OnStar receives information that vehicle ownership has changed, ...