UFCHEME

Both sides experience the vibration.

I have a Brand New 2024 Denali Ultimate Sierra (6.2L 10 Speed) experiencing high vibration on day 1. I picked up from out of town dealer on Saturday and took to Tire Store same day. They checked balance and stated OK. GMC Dealer checked and replaced both front break rotors. Still have vibrations. GMC Dealer checked tire balance and stated they were not balanced and the Tire Store got it wrong. The truck still vibrates at highway speeds. Any suggestions? This is a very expensive truck and rides rougher than my 2019 Silverado LTZ with 6.2 L and 10 Speed. IMG_7320.MOV IMG_7300.MOV