Thanks for the input!! So if my problem is not a "heater core" problem and the PTU doens't have antifreeze, what exactly is the smell from? Not sure what a PTO is either......and what is the infamous problem dealing with that? I really didn't think I'd have any issues and this is one of the reasons I wanted to buy new. My vehicle is AWD, what is the next step for me.......hopefully others who have been down this road can help? As always, thank you very much.