Shake or Vibration Issues

[Mike Mizner]

Please like and share this FB page. It really shows the issues we are all having..

 

https://www.facebook.com/ChevVibration/

[Enforcer]

WOW,

 

So sad to see so many new people and worse seeing some with unresolved issues STILL !

 

I was jaw jacking with a guy last week at the car wash and commented on how nice his Silverado

looked and then he unloaded for the next 20min about the vibration issue he's having on his

50k + truck with 2,200 miles. Wished him the best and gave him this link.

[PMurray]

I rode a Harley Sportster and have wrenched on dirt race cars for years. Vibrations will tear things apart over time. The mirror stems broke, tail light broke, license plate bracket broke, and an 1/8" thick steel tach bracket broke in half and all due to a 'buzz' in the bike (solid mounted unbalanced engine to frame). As noted above, rattles will become numerous with time. The seat frame is probably going to be the first part to fail as these trucks tend to centralize the vibrations to the center front seat. The buzz in my truck is very faint. Most noticeable around 60 mph and then is smooth at 70+. To me it feels harmonic. I think the frames are now rigid enough that other areas like suspension bushings, shocks, cab bushings, engine mounts, transmission and transaxle mounts, etc all are now allowing normal chassis vibrations to be felt. This is why some of the things like new shocks, changed ride heights, clamped rear springs, shimmed engine mounts, etc all have had some affect. With the frame so rigid, alignment of all parts becomes even more critical. Someone posted their vehicle alignment specs on here a while back and I noticed the whole rear end in that truck was toed to the right. A simple issue like that on a rigid frame can cause a harmonic vibration. A slightly out of round driveshaft would have been masked in a less rigid frame, but now it rears its ugly head. etc.

 

 

EDIT: I did the water bottle on the transmission tunnel test again this morning and perfectly still except for the horrible Illinois roads.

 

So your experience with a vibe Harley and dirt cars have convinced you that GM 1500s will have similar failures? Interesting.

[Newell33]

So your experience with a vibe Harley and dirt cars have convinced you that GM 1500s will have similar failures? Interesting.

 

I find it more interesting that someone would believe that vibrations are not likely to cause premature parts failures.

[Shu]

Yes the effects of long term vibrations can fatigue metals, loosen bolts, etc. Will it happen on these trucks, heck your guess is as good as mine.

[Shu]

Honestly i am shocked that there is a lack of support from some on here for those which are having this problem. I've seen the videos and if mine were like those I'd be at the dealership for a fix as well. Luckily mine is only a slight buzz.

[Britt Lifsey]

Honestly i am shocked that there is a lack of support from some on here for those which are having this problem. I've seen the videos and if mine were like those I'd be at the dealership for a fix as well. Luckily mine is only a slight buzz.

Support was lost when those that unfortunately have the issue make outrages claims that EVERY truck vibrates, that owners who say theirs ride smooth don't know anything or understand how a car should drive, that every GM is a POS, etc.

Edited May 5, 2016 by blifsey

[alb2tpa]

Honestly i am shocked that there is a lack of support from some on here for those which are having this problem. I've seen the videos and if mine were like those I'd be at the dealership for a fix as well. Luckily mine is only a slight buzz.

Thanks for the empathy,but, there is no fix yet. Probably why we have 585 pages on this forum thread.

[abominable z71]

 

I find it more interesting that someone would believe that vibrations are not likely to cause premature parts failures.

Every rotating piece of equipment vibrates, It's just the nature of the beast. Just because you can't feel a vibration in the cab doesn't mean the drive train is not vibrating. What I'm saying is the vibration source could be the same for every one of these trucks built. Just a small portion (mine being one of them) is allowing the vibrations to be felt in the cab. That being said, the vibration issue could be a problem of transmission due to poor isolation. Some have had their vibe fixed by tightening the body mounts or lifting the cab and retorqueing the bolts. This in no way addressed the source of the vibration it merely made it to where they could no longer feel it. Everyone of these trucks have a drive train that vibrates, the real question is do you feel it in some because the vibration source is stronger than others or do you feel it in some because the isolation is poor. Either way feeling a vibration doesn't mean there is going to be a premature premature failure, there's a factor of safety engineered into everything built.

[PMurray]

I find it more interesting that someone would believe that vibrations are not likely to cause premature parts failures.

 

Please re-read what I said. The experiences are not equal! I've had the vibes (fixed) and feel for owners whose vibes are not fixed. What I believe is just as irrelevent as what you think is interesting - even if it's not there.

[Snoringbear]

Well, if anyone should know about vibration it would be a Harley rider, lol But, for him to quantify what should be considered excessive? Well, thats a bit of a stretch !

[skylineflyer]

Let's all get along. Arguing just divides us. We don't need that.

[Wrench589]

Well, if anyone should know about vibration it would be a Harley rider, lol But, for him to quantify what should be considered excessive? Well, thats a bit of a stretch !

Snide comment aside, your comment actually proves a point I've tried to make all along. Everyone feels vibration to a different extent. One person may feel a small vibration and consider it uncomfortable while another will not feel a much larger amplitude vibration. You're Harley example is 100% proof of that....typical Harley owners obviously don't find that amount of vibration bothersome, yet many folks would find it quite objectionable. (I wonder what the Picoscope would measure on your favourite hard-tail!)

 

That said, most owners of these new generation GM brand pickups previously had GM brand pickups, and most almost immediately noticed an elevated vibration that was not present in their previous truck, and was bothersome. That's what brought them to this website. I truly believe most people on this thread did not sit down one day and go "gee, I wonder if I can go find an issue with my truck on the Internet and tie up dozens or hundreds of hours on it". Sure, there are always a few bored ramble-rousers with nothing better to do than stir things up. But I believe most folks on here simply want a vehicle that's at least as smooth as the one they traded in or sold!

[PMurray]

Let's all get along. Arguing just divides us. We don't need that.

Agreed!

[longhorn_cop]

Snide comment aside, your comment actually proves a point I've tried to make all along. Everyone feels vibration to a different extent. One person may feel a small vibration and consider it uncomfortable while another will not feel a much larger amplitude vibration. You're Harley example is 100% proof of that....typical Harley owners obviously don't find that amount of vibration bothersome, yet many folks would find it quite objectionable. (I wonder what the Picoscope would measure on your favourite hard-tail!)

 

That said, most owners of these new generation GM brand pickups previously had GM brand pickups, and most almost immediately noticed an elevated vibration that was not present in their previous truck, and was bothersome. That's what brought them to this website. I truly believe most people on this thread did not sit down one day and go "gee, I wonder if I can go find an issue with my truck on the Internet and tie up dozens or hundreds of hours on it". Sure, there are always a few bored ramble-rousers with nothing better to do than stir things up. But I believe most folks on here simply want a vehicle that's at least as smooth as the one they traded in or sold!

This is me. Id love to not have to jack with this headache. My '12 GMC i traded in had no issues. I miss that truck

 

 

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