I'm told my truck was successfully repaired!
Do I believe it? No. But I do have a glimmer of hope as I sent one of my guys (who isn't as in tune with these things as I am) to pick it up and he said it's good as well as the head service mgr who I've delt with since day one and has drove it with me 4xs.
So now the "explanation"...
So they started where they all start. The tires. Road Force revealed some abnormalities, exact readings I'm unaware of, but adjustments were made. They drove the truck and still detected vibration with the GM vibration detector and their butts. They went to the rear tires and re balanced them on the "NEW" laser balancer and found nothing out. Remounted the wheels, drove it, was worse. The tech simply rotated the rims on the studs 180 degrees and drove it again. NO VIBRATION!
What the hell? So now the theory is the hub centric wheels don't mount perfectly everytime or could be sensitive to even torque during installation. The dealer believes the wheels them selves could be the problem. Being the second set, it could be a manufacturing issue.
Thoughts?
I'll be to it in an hour or so to give it my full assesment.
2015 Denali 3500 DRW, Michelin ltx, 4x4