I've been looking at 3rd gen trucks. I will be looking for a used one. I prefer the nv5600 to the g56 so that rules out the 06 ( and some 05's ) I've been reading about some problems withe each year such as the 03 radiator problem. some 05's ( like ours got the plastic inter cooler) Can some one give me a check list as to what is right or wrong with the 03 04 and 05 models. lift pump issues? which would you choose and why. I haven't been following the 3rd gen threads much until recent, be reading posts on how to keep the old 97 going with 318,000 hard miles on it. Thanks