OER Parts offers a wide selection of Body Components for your 1989 GMC All Models. OER Parts offers 1989 GMC All Models Bumper Brackets, 1989 GMC All Models Filler Panels 1989 GMC All Models Guards & Bumperettes, 1989 GMC All Models Hardware, 1989 GMC All Models Impact Bar & Absorber, 1989 GMC All Models License Plate Brackets, Hardware & Frames 1989 GMC All Models License Plate Panel, 1989 GMC All Models License Plates, and 1989 GMC All Models Seals.