Tailgate gmc

My new 2019 GMC Sierra 1 month old display screen went out twice on me. I had to stop multiple times to restart my engine until it cleared up both times . dealership has no clue on how to fix it. is there any help out there 3B999E1C-2A2D-40BB-9A53-71CF5B8FB153.MOV

I just bought a new 2019 GMC sierra with the new tailgate GM needs To add a fix to the tailgate problem to stop the tailgate from hitting the ball hitch when lowering the gate all the way. I live in the area where most men drive trucks most of the men that I showed the problem to said they would not buy a truck with the new tailgate like this due to the fact most of them keep their hitch on their truck full-time .