2003 GMC Sierra 1500 Pickup Owner's Manual - Page 12

Heated Seats Reclining Seatbacks If your vehicle has this feature, the button used to control .the driver's heated seat is located on the driver's door panel. The button used to control the passenger's heated seat is located on the passenger's door panel. 1 To heat the entire seat, press the horizontal button. Press the button to cycle through the temperature settings of high, medium, and low. The indicator light will glow to indicate the level of heat selected. To heat only the seatback, press the vertical button with the heated seatback symbol. An indicator light on the button will glow to designate that only the seatback is being heated. The engine must be running for them to operate. The heated front seats will be canceled after the ignition is turned off. If you still want to use the heated front seat feature after you restart your vehicle, you will need to press the heated seat button again. To adjust the front seatback, lift the manual lever located on the outboard side of the seat. Release the lever to lock the seatback where you want it. Lift the lever again without pushing on the seatback and the seatback will go to an upright position. If your vehicle has power seats with a power recliner, see Power Seats on page 7-4 for further information on how to operate the reclining seatback feature. 1-5