2004 GMC Yukon Owner's Manual - Page 110

Power Windows If you have power windows, the controls are located on each of the side doors. The driver's door has a switch for the passenger and rear windows as well. Your power windows will work when the ignition has been turned to ACCESSORY or RUN or when Retained Accessory Power (RAP) is active. See Ignition Positions on page 2-20. Press the switch to lower the window. Pull up the front edge of the switch to raise the window. Express-Down Windows The driver and front passenger windows have an express down feature that allows the windows to be lowered without holding the switch. Press down fully on the window switch, then release, to activate the express down mode. The express down mode can be canceled at any time by pulling up on the switch. To open the window partway, press the switch to the first depression position until the window is at the desired position. 2-16