I have a 2014 Coachman Freelander 4500 with only 23k miles. I believe it is just an Express cut-away van. The vent blower wasn't working, then ramped up and works but doesn't stay on max air. The speed varies and the vent changes to floor and defrost then back to vent again. It will then blow max to whatever it is set on. The selector makes changing vacuum noises to the servos but the response is random. I changed the resistor for the blower and it did not make any change. Is it possibly a bad selector switch assembly on the console?