Yep, definitely not accurate.
My weights from one of our rally trips this year with our 2015 Silverado 2500HD DC Duramax and 2013 W&P 18EC with a 9,695# GVWR ....
GCVW 15,760# .... steering axle, 4,160# ... drive axle 4,840# ... trailer axles 6,760#. The truck weighs 7,580# (GVWR - "red" sticker) and by subtracting the weight of the diesel and cargo in the bed, the TW calculated to 904#.
This was fully loaded with a full tank of diesel, a fully fueled 2011 HD Streetglide, 110 gallons of water, gear and a 200# generator. In the bed of the truck was another 20 gallons of gas, trailer spare and two full coolers. Another 400# for the wife and I brought the GCVW to 16,160# travelling down the road.
White 2016 Work & Play Ultra 25ULA, Cherry Wood, Pebble, Onboard Onan 5.5, Onboard Fuel Station, 50-Amp Service
Onyx Black 2015 Chevrolet Silverado 2500HD DCSB, 6.6 Duramax/Allison, LTZ/Z71 397bhp/765t
Shadow Black 2016 Ford Mustang GT Premium Convertible 435 bhp (Wife's Toy)
Merlot Sunglo 2011 Harley Davidson Street Glide FLHX, FM 107", PM Heathens 21"/17", Metzeler ME880's (200 Rear), 115rwhp/124rwt