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Shake or Vibration Issues

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Boostholic Enthusiast

Boostholic

Posted
Posted (edited)

So, after having enough of the vibration, I took my 2014 GMC to the dealership to have it checked out. I explained to them that the vibration is basically between 45 -55 mph and then again at 68-74 mph. It is most noticeable when I'm coasting in gear. They test drove it, and here's where it all began.....

 

Tech came to me and stated that he agreed and did notice the vibration, and that he was 100% sure that it was 'tire related'. Hmmm.......

 

So I asked him if he also shifted neutral, as I asked him to (during my personal testing, this reduced the vibration significantly), and he said yes. He also agreed that when he did it, he also observed a "lesser vibration". Now to the obvious.....

 

Next, I asked him what the logic was that tire vibration was reduced when shifting into neutral? They seem unrelated to me.....yes?

After 2-3 minutes of BS, he finally agreed to have a "2nd opinion". To my surprise (not), the 2nd tech agreed with the first one's assessment. Who would've thought.....

 

So, now I'm bent over the barrel. No lube, no reach around....nothing....

 

I'm purchasing the Michelin LTX A/T2's, even though I still have 15 miles left on the GoodYear garbage. Had I not wanted to change tires anyway, I would've put up a better fight.

 

So, more to come, but I'll be a monkey's uncle if the tire change solves my vibration issues. I just wanted to share, as I've been following this closely for the past 6 months or so.

 

 

 

i have the same problems , someone here recommended a new driveshaft with yokes and everything i think i may bite the bullet and buy one if it didn't help i will sell it .

Edited by Boostholic
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csckickass
csckickass

Well folks, I did it. After all the failed attempts at the Chevy dealer I traded it in for a 2015 Ram 1500 Larame. I have to agree with the other folks on here that have done the same thing, it was th

mafd2
mafd2

Apparently you and the other customer reps don't care. If you or GM would care y'all would put more effort in the matter. Just coming on the forum and stating the same repetitive posts and being a 3

DALaws
DALaws

Well I have some good news and bad news about my truck vibrations. Good news is that my truck has a significantly less vibration at speed. The bad news is my truck has significantly less vibration. Fo

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CBrowning Enthusiast

CBrowning

Posted
Posted

I finally found a fix!

 

After buying 2 different 2014 GM trucks with this issue (see past posts) and battling GM over a year, I finally found a fix for the sub-par manufacturing of the new GM truck model. I bought a 2015 Ford F150 FX4 and I have not looked back since. I have always been a GM guy, but they will never get another dime from me or my family. I suggest you all do the same.

 

Good luck guys.

  • Like 2
DrozSLT Enthusiast

DrozSLT

Posted
Posted (edited)

I just bought a 14 crewcab 5.3 and have a vibration between 70-80 but it will get rough then will get lighter and keep going back and fourth its not constent anyone experience it??? I have 80k miles

Edited by DrozSLT
rpoffen Enthusiast

rpoffen

Posted
Posted

I just bought a 14 crewcab 5.3 and have a vibration between 70-80 but it will get rough then will get lighter and keep going back and fourth its not constent anyone experience it??? I have 80k miles

 

631 pages of the same or similar experiences :cry:

OmniCamaro Enthusiast

OmniCamaro

Posted
Posted

Possible something of interest with our trucks.

I recently noticed the bed of my truck is crooked. It's only off by about 2/8" but the odd thing is the guy at the dealership body shop did all these measurements on my loaner and it was off about the same in the opposite direction. Also my front wheels to the back wheels measurement was off as well (left side longer than the right) by around 2/8". The rear tires are off by about 1/2" from the bed (measurements taken from the wheels to the bed on both sides) which makes it seem the axle isn't straight either. Is that not odd for a brand new vehicle to be off like this? It's very apparent that there's no real care taken when putting these things together. Gotta get these manufacturing jobs back on US soil but that's another convo.

 

 

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Shu Enthusiast

Shu

Posted
Posted

bed crooked by 1/4" from cab, or not square or on the frame?

 

wheel base might be from caster setting on front or rear end slightly out of alignment. I'm not sure if these locating pins/leaf springs have a little play in them for alignment or not. If so, that could be an easy fix.

 

Tires tops to bed wheel well lip is 1/2" off side to side? level ground? Drivers side lower? fuel weight?

Jesse Davidson Enthusiast

Jesse Davidson

Posted
Posted

Possible something of interest with our trucks.

I recently noticed the bed of my truck is crooked. It's only off by about 2/8" but the odd thing is the guy at the dealership body shop did all these measurements on my loaner and it was off about the same in the opposite direction. Also my front wheels to the back wheels measurement was off as well (left side longer than the right) by around 2/8". The rear tires are off by about 1/2" from the bed (measurements taken from the wheels to the bed on both sides) which makes it seem the axle isn't straight either. Is that not odd for a brand new vehicle to be off like this? It's very apparent that there's no real care taken when putting these things together. Gotta get these manufacturing jobs back on US soil but that's another convo.

 

 

Sent from my iPad using Tapatalk

 

 

bed crooked by 1/4" from cab, or not square or on the frame?

 

wheel base might be from caster setting on front or rear end slightly out of alignment. I'm not sure if these locating pins/leaf springs have a little play in them for alignment or not. If so, that could be an easy fix.

 

Tires tops to bed wheel well lip is 1/2" off side to side? level ground? Drivers side lower? fuel weight?

 

 

this was brought up a couple hundred pages ago. it didn't seem to make any difference, maybe youll get lucky though

TheFactor Enthusiast

TheFactor

Posted
Posted (edited)

Hey Jesse have you got a new horse ? I've been out of the mix for a while since you were getting ready for a buy back on a trade in .Did you end up staying with GM ?

 

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Edited by TheFactor
Jesse Davidson Enthusiast

Jesse Davidson

Posted
Posted

Hey Jesse have you got a new horse ? I've been out of the mix for a while since you were getting ready for a buy back on a trade in .Did you end up staying with GM ?

 

Sent from my SM-G935T using Tapatalk

it hasnt finished yet. the guy was away last week, he did tell me he would be away the week before he left. so hopefully soon, this sh*t takes forever

mgoodling44 Enthusiast

mgoodling44

Posted
Posted

Well, in response to the latest post.....

Got the new Michelin LTX AT/2's. Tire service center install, balanced and aligned. Guess what? Same vibration as before. 45 -55 is the worst, during deceleration. It seems more when temp temp is cold, or fully hot. In between isn't as bad, at least that's what it seems. So I'm going back to the dealership and shoving the tires up the A$$ (just as I told them). Can anyone guess what the next steps are? I'm going back to the dealership tomorrow and asking them "ok, what's the next step?".

Any guesses?

 

I'm going to suggest that after further analysis, they state "well that's normal for this vehicle". It may set me off.

 

Any suggestions from the group on what do or say if they come back to me with that? I'm simply not letting them off the hook this easy. I paid good money for this, and GM is gong to pay one way or the other.

 

I love to listen to your suggestions.

TheFactor Enthusiast

TheFactor

Posted
Posted

it hasnt finished yet. the guy was away last week, he did tell me he would be away the week before he left. so hopefully soon, this sh*t takes forever

Cool man your almost there!

Are you getting another

GM?

 

Sent from my SM-G935T using Tapatalk

rpoffen Enthusiast

rpoffen

Posted
Posted

Well, in response to the latest post.....

Got the new Michelin LTX AT/2's. Tire service center install, balanced and aligned. Guess what? Same vibration as before. 45 -55 is the worst, during deceleration. It seems more when temp temp is cold, or fully hot. In between isn't as bad, at least that's what it seems. So I'm going back to the dealership and shoving the tires up the A$$ (just as I told them). Can anyone guess what the next steps are? I'm going back to the dealership tomorrow and asking them "ok, what's the next step?".

Any guesses?

 

I'm going to suggest that after further analysis, they state "well that's normal for this vehicle". It may set me off.

 

Any suggestions from the group on what do or say if they come back to me with that? I'm simply not letting them off the hook this easy. I paid good money for this, and GM is gong to pay one way or the other.

 

I love to listen to your suggestions.

 

The 45-55, especially on deceleration sounds to me like the setup of the rear gears is incorrect.

  • Like 1
abominable z71 Enthusiast

abominable z71

Posted
Posted

 

The 45-55, especially on deceleration sounds to me like the setup of the rear gears is incorrect.

Agreed sounds like like there's too much backlash. The carrier bearing preload may have been to loose letting the backlash open up when the load is removed.

  • Like 1
Jesse Davidson Enthusiast

Jesse Davidson

Posted
Posted

Cool man your almost there!

Are you getting another

GM?

 

Sent from my SM-G935T using Tapatalk

the deal is they take mine and give me a new 2017. whether I keep it or not is another story, not sure what Ill do at the moment, I'm terrified to have the vibration come back, and I already know that it is very very slight on the 2017 denali's I tested. im trying to get them to put better tires on before I accept.. If its gone I'll consider keeping it, if its still there I'm going straight to Ford or Toyota... I think

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