t_sivle

I just bought a 2020 Sierra SLT with CarbonPro bed, from reading this thread I'm assuming this bed option was only available for the AT4. Since no other tonneau bed covers were available I order the P/N from page 3 of this thread from the dealer for ~$1,150 including tax. Since they didn't have time that day to install I decided to do myself and I discovered it's not an exact match for the SLT model 5'8" bed. Here is what I found. The J-nut's are too short and don't line up with the round predrilled holes in the bed rail. Solution - I cut J-clips in half and just used the nut side. Be careful if you do this, hold the cut J-nut with a tool when tightening the bolt. The 4th predrilled hole from the cab on the bed rail does not line up with the predrilled hole on the cover rail. Solution - after installing the cover rail with the other available predrilled holes I drilled through the plastic and bed rail and inserted the nut and bolt. The 6th hole from the cab is just a square hole on the bedrail and is missing the Rivnut. Solution - none that I know of, there is no access to put a nut so I didn't install anything here. Later I will look at wall anchors or something similar.