Nah I don't have it on 4wd, I first noticed it going around a dunkin drive through in the morning and I though I was hearing thing, so when I got off I went into an empty parking lot and after a few attempt I was able to recreate the sound on video.
I check the truck suspension and to as best of my knowledge nothing seems out of place, no leaks etc.
I was scheduled for an oil change today and had the dealer take a look at it and they also reported that nothing seem out of the ordinary however they were very booked and I'm not even sure they even check lol.