See also:

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 ...

Heated and Ventilated Seats
Heated and Cooled Seat Buttons Shown, Heated Seat Buttons Similar If available, the buttons are on the center console. To operate, the engine must be running. : If available, press to heat the ...

Sensors
The solar sensor, located in the defrost grille in the middle of the instrument panel, monitors the solar heat. Do not cover the solar sensor or the system will not work properly. The interior te ...