OER Parts offers a wide selection of Body Panels for your 1984 GMC C1500. OER Parts offers 1984 GMC C1500 Cowl Panels, 1984 GMC C1500 Cowl Drain Flap, 1984 GMC C1500 Side Cowl Panel, 1984 GMC C1500 Cowl Panel Plugs , 1984 GMC C1500 Cowl Drain Hose, and 1984 GMC C1500 Cowl Gasket.