I purchased a 2020 2500 Denali and had the steering wobble and truck vibration at high speeds since day one.
My first trip to the dealership after 500 miles they did the “update” and told me it was fixed. Drove it home and still had the wobble and vibration .
Took to a local shop and had all 4 tires balanced and was told They were out of balance and I was good to go. Drove it home and still had the wobble and vibration.
Just dropped the truck off at the dealership over the weekend and they called me Tuesday and found out after doing a road force balance on all 4 tires that’s they were all out of spec and needed to be replaced under warranty.Went today and picked the truck up after they replaced all the tires and it drives great! No wobble with the steering wheel and no vibration. Huge difference. Highly recommend anyone with the issue find a qualified dealership that does the road force balance because just running the normal balance they will not find out if the tires are bad.
Also found out after asking about making sure the spare wasn’t bad I was told that the spare is a Michelin tire on a 18 inch rim. Haven’t looked under the truck to verify just thought that was odd.