OER Parts offers a wide selection of Body Components for your 1989 GMC Truck Convertible. OER Parts offers 1989 GMC Truck Cables, 1989 GMC Truck Convertible Tops 1989 GMC Truck Moldings, 1989 GMC Truck Rear Window, 1989 GMC Truck Roll Bar & Light Bar, 1989 GMC Truck Tonneau Cover, 1989 GMC Truck Boots, 1989 GMC Truck Top Care, 1989 GMC Truck Top Frames, 1989 GMC Truck Top Latches, 1989 GMC Truck Motors & Hardware and 1989 GMC Truck Weatherstrip.