Abstract: A tailgate door module that will fit in the existing opening of rear compartment of a vehicle adapted to receive a conventional liftgate includes a perimeter frame corresponding to the outer boundary of the liftgate, and mounted to the vehicle in like fashion. A fold-down tailgate is pivotally mounted to a lower portion of the perimeter frame, and is adapted to latch in a closed position conforming to the rear of the vehicle and occupying a lower portion of the perimeter frame, or to pivot downwardly to present a load-bearing platform. The upper portion of the perimeter frame is occupied by a window pivotally mounted to an upper extent of the perimeter frame, and latchable to the tailgate, so that the lift glass and tailgate close the opening of the vehicle and perimeter frame.