2020 2500HD Diesel brake vibrating

Prestigeww · June 9, 2020

I test drove a 2020 2500hd high country today and noticed that when the brake was pressed, the pedal vibrated. Whether I was driving and making a stop or just sitting in park with my foot on the brake pedal, there was a constant vibration. Felt like it was vibrating to the engine. I ended up trying 2 other 2020s with the same results. Is this normal?

CRApex · June 9, 2020

10 hours ago, Prestigeww said:

I test drove a 2020 2500hd high country today and noticed that when the brake was pressed, the pedal vibrated. Whether I was driving and making a stop or just sitting in park with my foot on the brake pedal, there was a constant vibration. Felt like it was vibrating to the engine. I ended up trying 2 other 2020s with the same results. Is this normal?

Mine are smooth, no vibrating. Perhaps some corrosion on the rotors from the trucks sitting on the lot?

Prestigeww · June 9, 2020

I’m not great with the mechanical side of things. Would corrosion on the rotors cause a vibration even if you were fully stopped and in park?

dab5577 · June 10, 2020

No. Sounds to me like you’re just feeling the motor running through your feet.

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samuse · June 10, 2020

My 2020 does it.

Almost tickles your foot!

vibrates the dash too.

Prestigeww · June 10, 2020

Yes exactly! Feels like the engine is making it vibrate. And that doesn’t bother you guys? Maybe I’m being a B but I test drove the ford 250 and new dodge 2500 and zero vibration. I almost want to wait until 2021 to see if they fix it.

dab5577 · June 10, 2020

It doesn’t bother me. This is my third Duramax and I’ve really never noticed it on any of them (2011,2015,2020), but have seen a few folks post similar to you. I just paid attention to it when I drove it this morning and I can feel it if I make a point to notice it, but normal driving I don’t.

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samuse · June 11, 2020

Well mine has a dash rattle, a whistle through the blower motor, a loud ass vent behind the seat, and pretty bad road noise.

So, it's whatever...

CRApex · June 12, 2020

On 6/9/2020 at 4:55 PM, Prestigeww said:

I’m not great with the mechanical side of things. Would corrosion on the rotors cause a vibration even if you were fully stopped and in park?

Ya I overlooked the sitting still part. I don't notice any of the above issues, whistles, loud vents or vibrating brakes. The only "vent" noise I hear is when the cooled seats are on high. They all vary including the trucks from Dodge and Ford. Important to do a thorough test drive before buying, even new ones.