I have 23k miles on my 2019 and started hearing the clunk a few months ago. I got underneath and didn't see anything but did notice there were a few loose nuts on the shackles though! Took to dealership and they replaced the leaf springs saying they were faulty. That was about 2 months ago. Yesterday I noticed the clunk returned. it's going back to the dealership Wednesday.
Spend all this money on a new truck, only to have major suspension components fail. sheesh!