Shake or Vibration Issues

[Shimmy Bang Bang]

Shimmy - My 14 Sierra had the 45-55 vibe. Tracked to a badly out of specs ring gear. I have a 15 rear end and no vibration.

 

Thank you for the info - So they replaced your entire rear end with a '15 rear end or did they go about it differently?

 

Did you happen to experience the seat and console shake?

Edited May 6, 2015 by Shimmy Bang Bang

[PMurray]

The vibration was a distinct "tiny rumble strip" feeling as described early in this forum by me and others. Pretty much a complete rear end less brakes, tires, and wheels as I understood.

[mikegmi2]

 

Thank you for the info - So they replaced your entire rear end with a '15 rear end or did they go about it differently?

 

Did you happen to experience the seat and console shake?

 

My truck also got a new rear axle assembly, which fixed the 50mph steering wheel vibration.

 

The seat and console shake can be due to a few different parts being out of spec, prop shaft, drive shaft, tires, to name a few.

 

An internal source within GM explained to me that they had multiple issues with multiple suppliers providing out of spec parts...all of which ended up on the 1500 pickup trucks.

 

That's why it has been so hard to diagnose. Tires might fix one truck, but the next might have 4 out of spec parts and still vibrate after a tire swap/balance.

 

The shame is that GM continues to build trucks with these faulty parts, KNOWING they have problems. To make matters worse, nearly every test drive consists of driving a few miles up and down the nearest road, never going above 45...and all of these vibe problems happen at highway speeds. I suppose if I was GM and in it for the cash, I would do the same thing...wait for customers to buy the truck, get it home, drive on the express way to work, feel the vibration...then live with it, or complain.

 

If you have any of these vibration problems, GET THE BBB INVOLVED! They are your only way out!

[Shimmy Bang Bang]

If I would go thru BBB would that mean countless trips to the dealer first though?

[Wrench589]

The vibration was a distinct "tiny rumble strip" feeling as described early in this forum by me and others. Pretty much a complete rear end less brakes, tires, and wheels as I understood.

Very interesting. I think there have been reports of replacing crown and pinions (on this thread and the SUV thread) and it not helping, but you had the entire rear end housing replaced. That's a whole other situation! Seems to me there was an early report of doing the same on an SUV on a different website, and it solved the issues with the SUV's (booming/buffeting/vibration). So, this may be on to something.

[Shimmy Bang Bang]

I wish service managers actually cared about their customers and had half a brain and read these topics. If I was a service manager, i would.

[Wrench589]

I wish service managers actually cared about their customers and had half a brain and read these topics. If I was a service manager, i would.

Probably better if they had a whole brain instead of a half! LOL!

[jcchevy]

The vibration was a distinct "tiny rumble strip" feeling as described early in this forum by me and others. Pretty much a complete rear end less brakes, tires, and wheels as I understood.

What you have described (tiny rumble strip feel) is your front differential. Needs replacement or complete overhaul. You may find this thread /post linked below more useful and related. This is not the resolution to all, but for those SPECIFIC to "tiny rumble strip" feel issues, its worth reviewing. We have several members (including myself) who got their dealerships (NOT EASY) to replace the entire front differential assembly, which resolved the issue and for most part trucks rode smooth as glass again.

 

http://www.gm-trucks.com/forums/topic/154976-2014-sierra-humming-noise/page-9?do=findComment&comment=1607902

[Shimmy Bang Bang]

Gosh, it almost seems that I need both my rear and front swapped out since I have the 45-55 buzzing vibration and the 74-80 mph console seat shake. I wanna cry,

[fake_usa]

I'm reading through this thread because I have the same problem with my 2009!

It's unbelievable that this is still going on and I hate to tell you guys it only get worse as the truck get older. My 2009 with 71k shakes so bad sometimes on the highway I'm scared a wheel is going to fall off. I was seriously thinking about buying a new truck because of this but after reading this thread no F'in way!

My truck was pretty smooth when I first got it so I feel I could easily be tricked in a test drive and end up with another shaker!!

I my end up with a Ford even though I love the looks and power of the GM truck.

[PMurray]

GM-GUY - The ring gear was checked and found to be grossly out of spec. Upon replacing the rear diff and axle the vibrations were gone... How does that square with your statement. Should I now, 9 months and 20,000 miles without any vibrations, return to the dealer and ask the service mgr to look for problems in the front end...? I can see that that might be "not easy" but you sound quite sure of your position.

[mikegmi2]

Just to review, what was the solution to the 70-80mph console and passenger seat shake?

 

In searching for a replacement for my truck, I've driven 11 Seirra and Silverados now. 8 of them had this problem. I found none with the gas pedal vibe (although my 2014 has it) and none with the steering wheel vibe. Nearly all of them have the console/seat shake though.

 

The trucks that rode smooth, 2 were demo trucks with 2500 and 5000 miles on them (probably had issues and were fixed), and the other was a long box v8 crew, with 20" Continental tires.

[mjj]

...The ring gear was checked and found to be grossly out of spec. Upon replacing the rear diff and axle the vibrations were gone...

Did you have your vibration from basically day one and as you put more miles on the truck did it seem to slowly get worse?

[jcchevy]

@PMmury, only if experiecing a rumble strip type hum/feel between 55-72mph. I see on prev post you had the less then 55mph issue which would not apply to the front and sounds like you got that taken care of via rear axle resolution. I must have misread and thought you were experiencing new issue. It is funny how some of the different distuiquished issues are determined by common speeds, which is helpful in narrowing at least where to start looking. The dealer can also hook up a vibration analyzer on the powertrain components to distinguish the faulty area. Im pretty mechanically inclined and had my issue narrowed down to the front diff, was just a matter of convincing dealer. Since the wheels still turn on the truck, its not considered broken/faulty to them.

[TheFactor]

What you have described (tiny rumble strip feel) is your front differential. Needs replacement or complete overhaul. You may find this thread /post linked below more useful and related. This is not the resolution to all, but for those SPECIFIC to "tiny rumble strip" feel issues, its worth reviewing. We have several members (including myself) who got their dealerships (NOT EASY) to replace the entire front differential assembly, which resolved the issue and for most part trucks rode smooth as glass again.

 

http://www.gm-trucks.com/forums/topic/154976-2014-sierra-humming-noise/page-9?do=findComment&comment=1607902

Thanks for the link I will be checking that thread out . But I also have the rumble strip vibration with a slight harmonic like you were to have your windows down a certain way on some cars at speed and you get a very similiar sound . Although mine is between exactly 20 and 30 mph . Also for the record I have a 2wd so no front differential .