My daughters 2012 Dodge Avenger defroster only works on the drivers side. No air blows out on the right side. We purchased a vehicle from a dodge dealership, with the understand that they would fix it no charge. Well after the 3rd trip back, we are now being told that the heater core is partially clogged. If this was true then no hot air would come from ether the right or left sides. But air would blow out both just cold, sounds like a actuator is bad and not allowing air to blow out the passenger side. If I am wrong about the clogged heater core please let me know.