OER Parts offers a wide selection of Body Components for your 1979 GMC Truck Convertible. OER Parts offers 1979 GMC Truck Cables, 1979 GMC Truck Convertible Tops 1979 GMC Truck Moldings, 1979 GMC Truck Rear Window, 1979 GMC Truck Roll Bar & Light Bar, 1979 GMC Truck Tonneau Cover, 1979 GMC Truck Boots, 1979 GMC Truck Top Care, 1979 GMC Truck Top Frames, 1979 GMC Truck Top Latches, 1979 GMC Truck Motors & Hardware and 1979 GMC Truck Weatherstrip.