2009 GMC Yukon Owner's Manual - Page 13

The vehicle may have additional features to adjust your vehicle's power seat: Heated Seats On vehicles with heated front seats, the controls are located on the driver and passenger doors. • To raise the height of the lumbar support, press and hold the top of the control. • To lower the height of the lumbar support, press and hold the bottom of the control. Release the control when the lower seatback reaches the desired level of lumbar support. Your vehicle may have a memory function which allows seat settings to be saved and recalled. See Memory Seat, Mirrors, and Pedals on page 1-8 for more information. Keep in mind that as your seating position changes, as it may during long trips, so should the position of your lumbar support. Adjust the seat as needed. I (Heated Seatback): Press to turn on the heated seatback. J (Heated Seat and Seatback): Press to turn on the heated seat and seatback. The light on the button will come on to indicate that the feature is working. Press the button to cycle through the temperature settings of high, medium, and low and to turn the heat to the seat off. Indicator lights will show the level of heat selected: three for high, two for medium, and one for low. The heated seats will be canceled 10 seconds after the ignition is turned off. To use the heated seat feature after restarting the vehicle, press the heated seat or seatback button again. 1-7