My wife's car, bought new. Around 38K miles, the recirc door was making a loud clicking noise every time a selection was made, and every 20 minutes or so after the car was shut off, or if a door was opened. The problem went away when I replaced the recirc door actuator. The part I removed had no visible defects or gears stripped inside. Within several months, instead of clicking, we now get a loud creaking/squeaking from the right side of the dash - same conditions - every time a selection was made, and every 20 minutes or so after the car was shut off, or if a door was opened. When I replaced the recirc door actuator, I twisted the shaft on the recirc door, and the door turned easily - no binding at all. Is it the door binding now? No clicking noise, it's creaking. Should I have performed a calibration after replacing the actuator? If so, how is it done? All functions work normally when selected. It just sounds like a ghost car. Any change at all in climate control selection, even turning the fan on or to a different speed, sets it off.