Okay For the past week I’ve been on forums and everything trying to get my defrost to work on my 02 Silverado 6.0l the mode door is working I stuck my head under the dash and watched the actuator work. I even pulled the mode door actuator off and I moved the levers and gears around under the dash I herd doors close and open but still no air flow through the defrost. I might just take it in so a shop can look at it but I wonder if you guys can help me first thanks a lot