I just got a 2nd opinion on my AC unit and it seems that I need a new AC Control Unit. Has anyone ever experienced this issue? I have searched the forum and have not seen much mention of a bad AC unit. I've mostly noticed failed heater cores or AC compressors. I got a quote from a local dealer, but I'd like to do it my self if I can find someone that has done this. Otherwise, it's $430 P&L.