Just bought a 2024 Denali HD and it has the 120v outlet in the bed. No power. Tried it several ways, truck off, in accessory mode, running and even tried with the cargo/bed lights on and nothing. Look in the owner's manual and it says a "DC/AC switch" has to be turned on. Okay, where is that? Manual shows it as a button on the dash with the tailgate open, exhaust brake, etc. There is no button there. Any help out there?
