A deck for a truck or trailer has a base frame and a deck frame movable relative to the base frame to either one of a tilt position or a dump position. A first pivot connection between the frames defines the pivot axis of the tilt position while a second pivot connection separate and spaced from the first pivot connection defines the pivot axis of the dump position. A common lift mechanism between the frames lifts the deck frame to either one of the tilt or dump positions depending upon the operative condition of the first and second pivot connections.