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Vibration at Interstate Speeds

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ascalise
ascalise

Hi thanks for you concern.   I am not sure how emailing the social media department is going to help in getting this resolved.  Given my experience with GM and trying to solve these things, I don't ha

Kevin0311
Kevin0311

my issues is the smoothest roads with the truck at steady hwy speed vibrates, on rougher road it isn't noticeable because of the road, for me only above 68 mph all the way up to the speed limiter. Ver

ascalise
ascalise

I'm 90% sure it is the front axles.

Gusseroni Enthusiast

Gusseroni

Posted
Posted

Taking the truck in for the third time tomorrow.  Still vibrating.  Forced Balanced the tires twice and replaced one.  

eppieguy Senior Enthusiast

eppieguy

Posted
Posted

I rotated the tires last week, same vibration, I'm thinking at this point it has to be drivetrain related. 

Yeti2863 New Member

Yeti2863

Posted
Posted

I have 2024 slt with 22" Carbon Flash Metallic wheels. I’m experiencing the same problem at 70-75mph  two visits to the dealership tires have been balanced and one tire replaced. I really hope there’s a recall asap. I want a smooth ride 

Jdamron New Member

Jdamron

Posted
Posted

Anyone have a fix for the vibration? I have same problem on 2024 Sierra Denali. 3 new tires, 3 road force balance. No improvement. Continue to document everything but dealer is running out of ideas. 

66ss3964spd Enthusiast

66ss3964spd

Posted
Posted

FWIW, on a typical 1500 with the 10 speed trans the rear end gear ratio is 3.23:1. Meaning for 1 complete revolution of the wheel/tire the driveshaft spins 3.23 times. A driveshaft vibration will be at a higher frequency than a wheel/tire vibration.

 

Another possibility is driveline angle. The transmission output shaft angle needs to be roughly equal to, but opposite of the rear axle pinon angle.

 

If you can find a driveline specialist shop they'd be able to check both the DS for balance and the driveline angles.

USMC-0341 New Member

USMC-0341

Posted
Posted

Same thing happened to me with my 2018 Denali 6.2 liter 4x4. It would start vibrating at 62 mph. I had just purchased it with 58,000 miles on it. Since the salesman didn't have me drive it on the highway (to much construction going on), I ASSUMED it ran fine at higher speeds. Biggest mistake i ever made. My bad. 

GM dealer said it was tranny. They flushed it with (supposedly) 20 quarts of Mobile 1 transmission fluid. That helped the vibration some, but I hate the way it shifts. Roughest shifting truck I ever owned. Though slight, It's just noticeable to me everytime I drive it. Mostly through the first 3 or 4 gears, then it smooths out. 

Ask your dealer about a bulletin concerning your year and model, and if a transmission flush would help your vibration problem. 

Good luck! 

Joe

Kevin0311 Enthusiast

Kevin0311

Posted
Posted (edited)

I replaced my factory driveshaft with a brand new oem one did not change anything, weights were on (not missing) and marked with marker on both. My truck has also been loaded (some squat) and completely unloaded going highway speeds and nothing changed either.

i installed rubbers in the leaf springs, checked hub runout, replaced rear rotors, disabled ARC and several other things to try to find this issue that dealer said "could not duplicate" and ended up trading in my 23 for a 24 that does the same exact thing.

 

2018 is a different body/frame style then the refresh later 19's and up. your 18 is not the 10 speed either.  The 8 speed trans had its issues, fluid update and convertors. 

 

DFM disabler is now available and has it's own issues at slowing and coasting speeds but have been wondering if someone with the disabler can confirm they still have this vibration issue or not, i have yet to hear of someone trying this to eliminate, yeah L9 soposely deactivates DFM but besides seat of pants have not seen proof of this either and i don't want to drive 75 mph in L9

Edited by Kevin0311
ascalise Enthusiast

ascalise

Posted
Posted

As I said earlier in this post, i'm pretty sure it has to do with the half shafts, at least in my truck.   How many of you that say you have this problem have 2wd trucks?

  • 4 weeks later...
jphc New Member

jphc

Posted
Posted
On 12/3/2024 at 11:05 AM, eppieguy said:

I've been fighting the same issue on my 2023 Sierra 1500 Ultimate w/ 6.2. I changed out the OEM 22's with a different set of OEM 22's and went with the slightly wider Michelins and am still have the issue. I have had the tires balanced by the tire dealer where I bough the new tires, the GM dealer 2 times and I paid for another place to balance them and still have a vibration at around 65/70 MPH. It seems there is something else going on somewhere.

Im having the same issues with my 2024 High country on 22". from 67 to 74 it vibrates, road force twice.

ascalise Enthusiast

ascalise

Posted
Posted
On 12/24/2024 at 6:35 PM, Kevin0311 said:

Wouldn't you feel it in the steering not the seat/armrest if it was front end halfshafts?

Any significant vibration is felt mostly through the seat and steeering wheel.   I don't know about you, but I sit in my seat with my hands on the wheel when operating my truck.  If there is a vibration that is presenting itself somehow that can't be felt through the wheel or the seat, it is probably not worth even mentioning.

Kevin0311 Enthusiast

Kevin0311

Posted
Posted

that's the issue it is such a minor vibration but very annoying especially when traveling several hundred miles on a trip, since dealers can not duplicate but only owners/drivers feel.  I personally feel in the seat and armrest NOT the steering wheel this is the 23 and the 24 High country. 

  • 2 weeks later...
Riverrat1 New Member

Riverrat1

Posted
Posted

I have a 2023 sierra 1500 5.3. I noticed the vibration slightly with factory tires. I put on bfg ko3's load range E and the vibration is worst at highway speeds. It does it when maintaining speed, starting up a slight incline or anytime the drive train has a slight torque on it, goes away when floating or coasting. I have a dfm disabler and nothing changed. Going into a head wind it gets significantly worse.

s10dragracer888 Enthusiast

s10dragracer888

Posted
Posted (edited)

Hey guys, what’s the chance it’s improperly balanced driveshafts, like a previous poster said. Maybe the driveshafts themselves are the problem, and OEM isn’t the right answer?

Edited by s10dragracer888

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