Justice555

Hello I have a 2020 Chev 3500 with the aux switches in place as an option GM sent the fuse block and battery cable etc with the truck but the dealer will not install them as part of the PDI i have read the upfitter bulletin 153 and it would appear that one has to remove dash panels just to get to the knee bolster panel. Is this correct? I need to install the fuse block behind the bolster panel but I do not want to take apart all of the dash to get to it. can any one advise thank you