OER Parts offers a wide selection of Dress Up Kits for your 1990 GMC Jimmy. OER Parts offers 1990 GMC Jimmy Valve Covers, 1990 GMC Jimmy Exhaust Manifolds, 1990 GMC Jimmy Intake Manifolds, 1990 GMC Jimmy Timing Covers, 1990 GMC Jimmy Water Pumps, 1990 GMC Jimmy Oil Pans, 1990 GMC Jimmy Custom Under Hood Mirrors, 1990 GMC Jimmy Radiator Support Show Panel, and more...