2010 Chevrolet Suburban 2500 Owner's Manual - Page 161

Express-Down/Up Windows Windows with the express feature allow the windows to be raised and lowered all the way without holding the switch. Press or pull the switch fully and release it to activate the express feature. The express mode can be canceled at any time by briefly pressing or pulling the switch. Express Window Anti‐Pinch Override { WARNING: If express override is activated, the window will not reverse automatically. You or others could be injured and the window could be damaged. Before you use express override, make sure that all people and obstructions are clear of the window path. In an emergency, the anti‐pinch feature can be overridden in a supervised mode. Hold the window switch all the way up to the second position. The window will rise for as long as the switch is held. Once the switch is released, the express mode is re‐activated. In this mode, the window can still close on an object in its path. Use care when using the override mode. Express Window Anti-Pinch Feature If any object is in the path of the window when the express‐up is active, the window will stop at the obstruction and auto‐reverse to a preset factory position. Weather conditions such as severe icing may also cause the window to auto‐reverse. The window will return to normal operation once the obstruction or condition is removed. 3-21