This will be my first winter in Colorado, and I was wondering if anyone had some good tips for me regarding getting my truck ready for winter. I know I'll probably need some fuel anti-freeze additives, but what about my truck's cooling system? Will I need to cover the front of my radiator? What about my auto trans... Will it be OK if I get an external tranny cooler? The one thing I've gotta fix soon is my heater controls. I get tons of heat to the cab, but the selector for where the hot air goes doesn't seem to be working. I don't get any hot air out of my defrost, and it's always coming out from the floor vents and partially from the dash vents. How hard is it to fix that? My K5 is my daily driver, and it'll need new tires in the near future. Any recommendations? I don't care about road noise, and I have 31"x10.5" tires right now. Thanks!!!