So the heavier springs, axle, 3.73 rear end, etc must add 140 (200 - 60) pounds to the vehicle weight. Might get more payload with 4 cylinder turbo, but your towing capacity drops to 9600 pounds and you get the 8 speed.
I spent time looking at 2021s and payload at dealer lots and youtube videos. Look at the last 2 in the list, they are above 1800. Add 60 pounds payload for NHT and you are around 1850 pounds payload. Perhaps the 2022s are heavier than the 2021s, or the GMC is heavier than the Chevy. If you aren't maxing out your payload that often and are pulling a trailer, put the spare tire in the trailer. Be nice if they offered the carbon pro bed on all the trucks to increase the payload by 100 pounds. Here is my list (all based of the stickers on the trucks).
3.0 AT4 cPro AT4 brds, 18s
1483
3.0 AT4 cPro AT4 sRf, brds, 18s
1465
3.0 AT4 cPro AT4 sRf, brds, 18s (TFL)
1451
3.0 AT4 plain BB
1515
3.0 denali
1366
3.0 denali (sunRoof)
1449
3.0 Elev ccsb sunRoof, reg tailgate, val & pref pkg, 20s, bdlnr
1627
3.0 HC 2020 HiCoDeluxe (TFL 7:38) ccsb 22s, rg tailgate
1512
3.0 HC, pBrds, sunRoof, sTnaw, 22s
1450
3.0 LT 2020 All Star Edition
1813
3.0 RST cclb
1808