Well, I went and looked the truck over today. When I got there the batteries were dead and the truck needed a boost. I check the hours and it turns out that the truck averaged about 40mph its whole life. When we got it charged, it turned over and locked up. Then it started leaking antfreeze by the cat. I'm leaning towards a EGR cooler problem, but HG's are sure a big posibility. They drove it to where its parked now, and had been sitting for a month. Anyone think that the problem may just be the EGR?