I believe Rob is correct about the diesel Suburban coming out.
I had a 2001 2500HD crew/short with the 8.1 that was slightly pumped up. It would run like a raped ape
except past the gas station. 10.5 most of the time and 7 with the trailer.
My 2005 2500HD is a Duramax and I love it. U.S. Diesel has the best prices on the upgrades. I put a full Banks kit on mine when it was new. The 6 gun, Speed Loader and Exhaust. It now is about 400hp and close to 800#'s on the torque. It is a rubber roaster!!! 0-60 @6 sec. 97 in the 1/4.
I will never go back to gas. All of the Banks goodies was about $1500.00 delivered and it took me about 6 hours to install.
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Chris
1967 Yenko Stinger YS-199
Southeast of Disorder