A carrier module for a motor vehicle and door assembly therewith is provided. The carrier module includes a pair of carrier members, each extending lengthwise between opposite first and second ends. The carrier members are operably coupled to one another via at least one cable, wherein at least one of the carrier members is formed of plastic material and includes at least one of, a plurality of weight reduction through openings bounded by strength and rigidity enhancing walls, at least one non-planar side having weight reduction, strength and rigidity enhancing undulations, and a plurality of strength and rigidity enhancing ribs bounding weight reduction recessed pockets.