mine does the hot and cold thing. its normally when its on auto and getting close to the temp i have set. it sucks, and i wish i could fix it.
Same here 08 TitanMine's acting screwy as well. When the fan is on high, it will randomly stop blowing totally for about 3-4 seconds, then start again. Today, I have the fan on the lowest setting and it's blowing at medium speed, and I have to crank it all the way to high to bump it to the high speed. Won't blow at low speed. Just started doing this in the last few weeks. Any ideas?