Fitment: 2011-2012 Buick Enclave 2011-2012 GMC Acadia Package includes: 1x HVAC AC Heater Blend Door Actuator The function of the damper actuator: The air door actuator adjusts the air flow direction and intensity by controlling the opening and closing of the air door, so as to realize the circulation and adjustment of the air in the car and provide a comfortable driving environment. .
