MoCOgmc

I've got 1600 miles on mine. I'm getting real world about 16.5mpg with the computer telling me 18. I've got a 3500 Long Bed SRW and live in CO at around 7k elevation. Drive about 50/50 city/highway. I started using Standyne at about 1000 miles and did notice about a 1mpg increase.

Wait, why can't we put them on 5th wheels?

So here is what I've found in my research. Below are the relevant dimensions. 2019 Silverado 1500 2020 Silverado 3500 Inside Length at Floor 98.18 (2494) 98.27 (2496) Inside width, between wheelhousing 50.63 (1286) 50.55 (1284) Wall to Wall, bed width 71.4 (1814) 71.4 (1814) It seems that the 2019 1500 Long Bed covers should fit ours which I've confirmed with the Truxedo TruxPort 272201. I'm NOT sure if ALL covers will fit though. My dealer called Retrax which said they're releasing a model that fits in 2 weeks. Bak and Pace Edwards did not give an ETA. I'm only using this cover temporarily as I want to get a Pace Edwards UltraGroove but who knows when that is happening. They don't have that out for the 2019 1500 Long Bed either.

Anyone with a Long Bed and a Tonneau Cover? I can't find any except what is on the GMC Accessories store. Interestingly, the ones in the store are the same as the 19/20 Sierra 1500 Long bed. Please post pics and Model of what you have.