skylark
I'm Awesome
I have been putting this off for awhile now and it is starting to get a little cold here. On our 2000 K3500 the defroster and recirculate functions don't work. I had to change the heater core so while I had it apart I checked that the mode doors weren't stuck. I could move them manually but I could only get it to change with floor and vent not my defrost. I would've called it good at that point but I noticed that when I turned the knob to defrost I could hear the A/C clutch cycle. I re-soldered all of the connections and didn't have any luck. I'm hoping that there is a second set of contacts that are engaging the A/C clutch. I believe that I will bit the bullet and buy a new controller unless someone has some insight as to what else may be going on.