2002 GMC Envoy Owner's Manual - Page 16

Programming for automatic seat and mirror movement can be done through the Driver Information Center (DIC). You can choose to either select or not select automatic seat and mirror movement by using the remote keyless entry transmitter, by placing your key in the ignition, or when exiting the vehicle. For programming information, see "Vehicle Programming and Personalization Features" in the Index. Heated Front Seats (Option) Your vehicle may have heated front seats. The buttons used to control this feature are located on the front door armrests. The engine must be running for the heated seat feature to work. The horizontal button with the heated seat symbol is used to control the temperature settings high, medium and low. Press the button to cycle through the temperature settings and to turn the heated seat off. An indicator light will glow beside the temperature selected. The low setting warms the seatback and cushion until the seat temperature is near body temperature. The medium and high settings heat the seatback and seat cushion to a slightly higher temperature. You will be able to feel heat in about two minutes. To heat only the seatback, press the vertical button with the heated seatback symbol. Press the vertical button again to heat the whole seat. The feature will shut off automatically when the ignition is turned off. 1-4