OER Parts offers a wide selection of Body Components for your 1978 GMC G15. OER Parts offers 1978 GMC G15 Trunk Components, 1978 GMC G15 Interior Panels, 1978 GMC G15 Latches and Hinges, 1978 GMC G15 Partitions, 1978 GMC G15 Spare Tire & Jack Accessories, 1978 GMC G15 Spatter Paints, 1978 GMC G15 Trunk Insulation, 1978 GMC G15 Spare Tire and Parts, 1978 GMC G15 Trunk Lock & Key, and 1978 GMC G15 Trunk Mats & Carpets.