maybe make sure both the hub and the rim surfaces are flat and corrosion free?
I know for both my '04 and '12 3500, which are both duallies, I've had the rear wheel lugs loosen sometimes, after tightening, then driving a bit and then re-torquing them. The fronts also sometimes, but much less common vs the rears.
And if you have the flanged flat face (vs the acorn style) lug nuts, make sure the flange part can spin easily. I spray some fluid film on the outside and work it into the groove until the flange can spin easily, making sure not to get FF on the threads. This seems to have helped with the lugs getting properly torqued, so they stay tight.