Just ran my truck across the CAT scales again (it's very close).
2015 Chevy Silverado 2500HD double cab, work truck, 4x4, 6.0 gas, tank full of gas.
2,910 lbs - What the brochure says my CCC is
2,735 lbs - What the yellow sticker on the truck say my CCC is
2,840 lbs - What the CAT scales say it is in the factory configuration (without me in it)
2,240 lbs - What the CAT scales say it is with all my add ons, me in it and some gear. I added the WDH head, wheel to wheel nerf bars, toneau cover, bed mat, fender flares, rear cargo storage bin and some tools.
I can live with that. Not really anything else I want to add except I may replace the bed mat with LineX.