buy a 3/4 ton with crew cab, 4x4 and diesel, in mid to upper trim packages, and yes, payload is usually in the 2000-2500lb range by the sticker. crew, 4x4 and diesel ALL add a LOT weight.
Interestingly my cc/4x4/sb 2004 duramax had a payload of 2100lbs, with a 9200lb GVWR,
My 2015 cc/4x4/sb Sierra duramax has a 10,000GVWR, does it have a 2900lb payload, NOPE empty weight went up by almost 500lbs, and payload is just shy of 2400lbs.
The "class" of the 3/4 ton truck limits max GVWR to 10,000lbs, I suspect that if for some reason that went to 11,000 or even 11,500 lbs it wouldn't take long for the 3/4 tons to have that GVWR either as std, with an "option" of 10,000lbs.
1 ton SRW often have a 10,000lb GVWR option for tax/legal/CDL purposes
And GM is similar to ford, the difference between the 3/4 ton and 1 ton SRW are very minor. front and rear axles are the same, same 18" tires as std, different rear spring packs, and possibly some other production differences.
GMC for 2015 doesn't even say "2500" or "3500" on the denali package, just Denali HD for the 2500 and 3500. And the prices and options for the 3/4 ton and 1 ton SRW are virtually identical.
Had a 1 ton SRW configured like we wanted been available I probably would have bought it. However, at least around here 1 ton SRW are pretty scarce, and 1 ton standard (short) box are very seldom on a lot.