OER Parts offers a wide selection of Body Components for your 1989 GMC R3500. OER Parts offers 1989 GMC R3500 Trunk Components, 1989 GMC R3500 Interior Panels, 1989 GMC R3500 Latches and Hinges, 1989 GMC R3500 Partitions, 1989 GMC R3500 Spare Tire & Jack Accessories, 1989 GMC R3500 Spatter Paints, 1989 GMC R3500 Trunk Insulation, 1989 GMC R3500 Spare Tire and Parts, 1989 GMC R3500 Trunk Lock & Key, and 1989 GMC R3500 Trunk Mats & Carpets.