No air blowing at all on Dec 23. First I though it might be a fuse or something. Brand new truck less than 800 miles. Took it to dealer for service on Christmas Eve and they said they replaced the blower fan controller. I got in it and the truck was running and the blower was blowing. It was fine for about 3 starts that day and then that evening I got back in, started her up and it wasnt working again. Then this morning it starts blowing again. This is when trying manual and also climate control. This is also when trying any speed at all. Now I have to take it back in again. I'm extremely disappointed. This is a brand new truck. Any ideas what may be going on? A short? A resistor issue like I have seen discussed on here? Common issue? Any thoughts is much appreciated.