I just noticed this issue for the first time. My heater never seems to blow on high, but I had windows open and full fan on.. flap flap flap flap.. sounds like the plastic or rubber flapper that diverts air up/down etc is being blown around forcefully. If I back the fan off a bit it goes away.
So, no fix? I'm sure its going to be a pita dash removal fix! Not looking forward to that.
|