Features: Rugged casing and wear-resistant internal gears. HVAC heater blend door actuators are devices used to control the opening and closing of doors, regulate air flow, wind speed, and wind direction. By controlling the action of the damper actuator, precise control of the air-conditioning system, resulting in a comfortable indoor environment and efficient use of energy. Replacement is required for the following conditions: reduced airflow through ventilation openings; noisy operation of the mixing door actuator; inability of the HVAC system to regulate or set temperature and ventilation. Determine if you need to replace: 1. Reduced airflow through vents 2. Strange noises when operating mixing door actuator 3. HVAC system fails to regulate or set temperature and ventilation. Details: Color: Black Material: Plastic Pin Number: 4 OE Number:10424940Fitment: for Buick Rendezvous 6 Cyl 3.4L, 6 Cyl 3.5L, 6 Cyl 3.6L 2002-2007 for Chevrolet Venture 6 Cyl 3.4L 2001-2005 for Oldsmobile Silhouette 6 Cyl 3.4L 2001-2004 for Pontiac Aztek 6 Cyl 3.4L 2001-2005 for Pontiac Montana 6 Cyl 3.4L 2001-2005 Please Note:This is non-OEM product, accessory ONLY!Package List:1 pc HVAC Heater Blend Door Actuators