I installed a Access Vanish roll up on my carbon pro. I had to drill 12 holes just through the bed edge cover. The tonneau came with a drill guide that clipped in to the hole be hind the edge cover. Easy install. There's a utube video. Hope this helps.
I have a 20 sierra with this same code. Had 4 miles on it. Didnt even leave the lot. 3 times now in 350miles. Was told to use my parking brake, when turning off truck.