Abstract: A window assembly of a motor vehicle includes a pair of spaced-apart fixed window panes forming an opening therebetween, vertically spaced-apart upper and lower tracks, a sliding window pane having opposed upper and lower edges that move along the upper and lower tracks, and a camming mechanism including a plurality of cams. The cams are pivotably secured to the sliding window pane near corners of the sliding window pane. An actuator is operatively connected to the cams for selectively and simultaneously pivoting the cams. Simultaneously pivoting the cams forcibly moves the sliding window pane between a closed position wherein an outside surface of the sliding window pane is in a first plane substantially flush with an outer surface of the fixed window panes and an open position wherein the outside surface of the sliding window pane is in a second plane substantially parallel to and offset from the first plane.