If you take care of it, it will last a long friggin time, my dad told me yesterday, that if the frame didn't rot out, he'd stil be driving the 93 that he gave me, It has 340k kilometers which is roughly 220k miles? It runs damn well, and was maintained at the intervals in the manual. I'd say, mechanically, its in better shape than ANY of the gm, ford, or chrysler trucks in this hole area with that many miles on them, because id like to see a gmc jimmy with that much milage with such low repair bills (like 3 things went wrong in that time frame)
They are probably the best suv ever. period. I haven't seen one that could take more of a beating and still run great.
Check the garage section and the how to's and you'll find a wealth of info.