OER Parts offers a wide selection of Air Conditioning and Heater Parts for your 1983 Chevrolet All Models. OER Parts offers 1983 Chevrolet All Models Air Conditioning and Heater Control Panels, 1983 Chevrolet All Models Air Conditioning and Heater Knobs, 1983 Chevrolet All Models Air Conditioning and Heater Levers and Cables, 1983 Chevrolet All Models Air Conditioning and Heater Relays, 1983 Chevrolet All Models Air Conditioning and Heater Switches.