I have a 2000 3500 series GMC with a 350 Auto and a Knapheide tool body. Get about 13mpg in winter and 15 in summer. Already has 106000 miles on it, no problems that weren't covered under warranty. Had a 97 that was identical and no problems with that either. Going to look for a new one soon not sure what but probably an extended cab version of what I have. no more single rear wheel 1 tons by GMC so I have to go to 3/4 ton. Probably cost 30,000 dollars, thats just sick if you ask me [Linked Image]