GMC Sierra
Sierra is a 4-door, up to 6-passenger full size pickup.
See also:
Tire Messages
SERVICE TIRE MONITOR SYSTEM
This message displays if there is a problem with the Tire Pressure Monitor System
(TPMS). See Tire Pressure Monitor Operation on page 10‑54 for more information.
...
Languages
The vehicle can be programmed to respond in French or Spanish. Push Q and ask
an Advisor. Advisors can speak French or Spanish. ...
Customer Assistance Offices (U.S. and Canada)
GMC encourages customers to call the toll-free number for assistance.
However, if a customer wishes to write or e-mail GMC, the letter should be addressed to:
United States
GMC Customer Assistance ...