GMC Sierra Quiz
In Brief

Roadside Assistance Program

In this manual: In Brief
Introduction — 6In Brief — 46Seats and Restraints — 48Storage — 7Instruments and Controls — 75Lighting — 22Infotainment System — 22Climate Controls — 7Driving and Operating — 77Vehicle Care — 79Service and Maintenance — 26Technical Data — 8Customer Information — 25OnStar — 25Keys, Doors, and Windows — 38
~1min read
4special tools

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.

See Roadside Assistance Program (U.S. and Canada) on page 13‑8 or Roadside Assistance Program (Mexico) on page 13‑10 for more information.

Roadside Assistance and OnStar (U.S. and Canada)

If you have an active OnStar subscription, press the GMS Sierra: Roadside Assistance Program. Online Owner Center (U.S. and Canada) button and the current GPS location will be sent to an OnStar advisor who will assess your problem, contact Roadside Assistance, and relay your exact location to get the help you need.

Test yourself

A quick GMC Sierra quiz: every answer comes with an explanation and a link to the manual page.