2003 GMC Sierra 1500 Pickup Owner's Manual - Page 104

Lock-Out Switch If you have power windows on a Crew Cab@,the driver's door power window switch has a lockout feature. The lockout switch is located in front of the window switches. This feature prevents all windows from operating, except from the driver's position, when the driver's door button is engaged. To engage the lock-out feature press the switch, and an indicator light on the switch will illuminate. To disengage the lock-out feature press the switch again, and the indicator light will turn off. When the button is not engaged, the rear power windows will operate. Swing-Out Windows To open a rear swing-out window, flip the latch open and swing the glass out. The latch will catch when the window is fully open and it will also hold it in the open position. Sun Visors To block out glare, you can swing down the visors. You can also swing them out to help block glare at the front and side windows. The passenger's side sun visor may have a vanity mirror. 2-17