Last fall when I first got my truck I talked on here about heating problems. After trying many things I thought I had solved the problem because there was no overheating all throght winter. The first warm day this year it overheated again. And I lost my trans. fluid from the short rubber hose that connects the oil line to the radiator at the same time. The hose was replaced and having nothing else to try out I asked a knowlegable mechanic to check it out. He first said there was nothing he could find wrong with it Next day he called me and said Your fan is on backward. Unbelievable--another thing that was wrong when I got the truck. I never would have thought to look. I put this on here as another thing to check when you have an overheating problem and you think you've checked everything.