So my front defroster doesn't work on my civic. The AC works nice and cold, it goes to a nice warm heater when I want it to and my rear defroster works too. It's just when I change the air flow of the vents, it doesn't change. I can hear something whirring in the dash, but nothing changes.
The thing is, it used to work and one day it failed. I thought my climate control was dead, I just changed it and still no work.