Vibration at Interstate Speeds

UFCHEME · July 21

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.

SteveP45 · July 21

Vibration all over or is it one side?

The drive shaft usually needs to balanced after it is made. You would see one or more pieces of metal welded to the shaft… perhaps one or all were knocked off the shaft or improperly spot welded:

SteveP45 · July 21

Keep taking it back to dealership. You may be able to invoke the lemon law and get it replaced.

UFCHEME · July 22

14 hours ago, SteveP45 said:

Vibration all over or is it one side?

The drive shaft usually needs to balanced after it is made. You would see one or more pieces of metal welded to the shaft… perhaps one or all were knocked off the shaft or improperly spot welded:

Both sides experience the vibration.

Dsouza14 · July 22

I'm experiencing the same issue with my new Denali Ultimate. I just picked it up last Friday and it's showing the exact symptoms that have been described here. I took it back to the dealership and they told me it was a tire balance issue. However, after getting it back on Saturday, I still felt vibrations when I reached highway speeds of 65/70. I returned to the dealership today and they said they would need to investigate further. They gave me another Denali Ultimate as a loaner (it's brand new with only 12 miles on it), but the loaner vehicle is also experiencing the same issue.

Kevin0311 · July 23

Good luck getting it fixed, a few of us have and continue to deal with this.

Denali2424 · October 31

On 7/21/2024 at 1:59 PM, UFCHEME said:

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.

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I am experiencing the same issue with a 2024 Sierra 1500 Denali ultimate. I've gotten the wheels balanced twice and the vibration persists at highway speed. How was yours resolved?