OER Parts offers a wide selection of Body Panels for your 1984 GMC C2500. OER Parts offers 1984 GMC C2500 Cowl Panels, 1984 GMC C2500 Cowl Drain Flap, 1984 GMC C2500 Side Cowl Panel, 1984 GMC C2500 Cowl Panel Plugs , 1984 GMC C2500 Cowl Drain Hose, and 1984 GMC C2500 Cowl Gasket.