Part Type: HVAC Mode Door Actuator. HVAC Air Door Actuator. 2003 Chevrolet Avalanche 2500 Actuator with Cam; w/o Rear Passenger A/C Conrols in Center Console;. Style: HVAC Air Door Actuator. 2004 Chevrolet Avalanche 2500 Actuator with Cam; w/o Rear Passenger A/C Conrols in Center Console;.