Only routine maintenance has needed done on major systems. Currently the gas gauge and trip meter are touchy, but are still working if you know the combination. The truck bed rattles some which could probably be easily repaired if I would invest the money. I just recently turned 70,000 miles.
I bought this truck with 9,000 miles on it, as a factory buyback. It is the closest thing I have ever had to a "New" vehicle. It has all the goodies a gentlewoman farmer could want. It was purchased to pull a horse trailer and it has performed beyond my expectations although it has not been used hard.
Know what you got! 5.6 is not an engine ever offered by anyone that I know of. My 5.9 runs awesome.