Sounds solid. I'd check it out like any other vehicle you're thinking about buying. Condition of fluids, maintenance records, signs of a wreck, all that good stuff. Also check the price with a couple blue book places, I like kelly blue book, and edmunds.com also. I think that would be a 700r4 transmission, 10 bolt front and rear axles, and a NP241 transfer case. All good common parts, except I believe the passenger side shaft 241 is hard to find. Still sounds like a good buy to me. I loved my 6.2, and Suburbans are solid. Good luck.
Thanks for the reply. I drove 50 miles to see this vehicle and the owner said it was leaking antifreeze and needed a special freeze plug put in which his mechanic had to order. I did not see the burb and told the owner if he wants to sell it, drive it up to me 50 miles. I suppose I wss lucky.