Part Type: HVAC Recirculation Door Actuator. HVAC Air Door Actuator. 1991 Chevrolet C2500. 1992 Chevrolet C2500. 1994 Chevrolet C2500. 1993 Chevrolet C2500. Air Door Actuator. Ensure that this part fits your vehicle by entering your vehicle's Year, Make, Model, Trim, and Engine in the Compatibility Table.