I have this issue...but I'm not sure we have a single issue involved. There have been some at different speeds, some with associated noises, etc.
I noted it with the dealer within the first month of delivery. They balked but did a re-balance...but it had little, if any effect.
They said tire balance is not under warranty. I told it was a Day 1 thing and that they drover the truck to the dealer about 300 miles or more for me to take delivery. Obviously could've happened on that trip.
Main problem is my shake is intermittent and also generally only occurs > 65 to about 75mph.
Dealer says they can't/won't "check", and therefore fix, anything that's out of norm at above legal speed limit.
I'm at 28k miles and was waiting for a new set of tires and getting road forced balance as well before I lobbed a more formal complaint.
But I've also been "at" speed many times and have not had any shake.
I have no associated "sounds" with the shake...just slight steering wheel vibration.
Put two hands on the wheel somewhat firm and it's almost entirely gone. One hand, very noticable but not crazy (same w/ no hands ).