Shake or Vibration Issues

[dave07]

To the people that are getting buy backs, how bad were your vibrations? I can feel a very faint vibration and see a very faint vibration in my center console. However, it goes away when my arm is on it and I can't even feel it. Its not even enough to rattle some change in the console. Are you getting buy backs with these little vibrations or are yours much worse?

[Enforcer]

My vibration was noticed @ 300 miles and every time GM did something to it

just made it worse, Umteen times of road forcing 4 different sets of tires & wheels, pinion,

complete differential, shocks, and for extra credit they loosened the body mounts twice !

 

I honestly considered mine to be a safety hazard, @ 75 it would feel like the rear end was

leaving the pavement kinda like driving on a wash board gravel road. this was from Nov. 2014

until Feb.2015 when GM finally cut a check. I drove seven 2014's and three 2015's all with less

then a 100 miles on them and they all vibrated, not as bad as mine so I declined the use of a

loaned and bought a Ram on 12/22/2014 and have not had one issue and the best part I was able

to get a more equipped Ram for MUCH less money then the Silverado

 

They never had time to address the transmission or injector issues !

Edited December 24, 2015 by Enforcer

[saafrican]

After fighting GM about the vibration issues ,and taking it back many times

"because the tires are out of balance ?"

Come of GM try another line.

This ones getting old

And wasting everyones time

 

I gave up and bought a TUNDRA

sure it doesn't have all the internet ,auto lights ,dance computer displays etc.

Hey its a truck not a space ship

 

BUT the best of all it doesn't vibrate.

 

Sure the fuel consumption of the 5.7 (380 HP) is not as good as the 4.3 (280hp) Sierra

But it isn't much worse .

 

Heck its a truck not a Prius

 

Just like you guys , I loved my Sierra , thats why I bought it.

 

But after 15000 miles of vibration , I gave up

 

Now ?

 

Well, I just love my Tundra more and More

 

GM should change the vibration issue and call it massaging

then GM will be stand for

 

Good Massage .

 

I am still a member of this sight and read all about the solution BS Gm are feeding you guys .

 

My heart bleeds for you guys locked into your deals

[Wrench589]

GMC....Generally More Crap!

[jeffziss]

To the people that are getting buy backs, how bad were your vibrations? I can feel a very faint vibration and see a very faint vibration in my center console. However, it goes away when my arm is on it and I can't even feel it. Its not even enough to rattle some change in the console. Are you getting buy backs with these little vibrations or are yours much worse?

It doesn't sound like yours is that bad, yet. Mine was so bad, you couldn't keep things on the passenger seat. The day I traded my 2016 truck in, I noticed that 3 of the 6 clamps holding the BakFlip cover on had loosened and fallen off. The vibration is not only a nuisance but it will cause long term issues. search youtube for sivlerado vibration and you will see what people are referring to.

[abominable z71]

Yes

Newbie to the site here.

I have a 2015 Sierra with vibration issues among other problems that have brought me to this site. To date I have had my tires balanced and re-balanced then new snow tired balanced and re-balanced and just had a new rear end installed. Every visit to the dealer seems to make the vibration worse. The dealer acknowledges there are issues with these trucks and is trying very hard to rectify. Currently the dealer says the vibration on my truck is due to the tires. The road force balance test show my tires requiring 30lbs an the GM spec is a max of 20lbs due to the stiffer frames in our trucks. I'm hoping to get the new winter tires replaced buy the manufacturer but the dealer says they won't replace them because 30lbs is within the tire manufacturer spec. The original 22" tires will be replaced under warranty next spring.

It's not a wheel and tire issue at least for almost all. a few people have the vibe fixed by wheel/tire replacement majority of us have had countless road force balances and numerous wheel and tires changes with no affect. If you look at all the truck that are posted in the wheel and tire section and lift kit section on this site it's obvious most don't vibrate and never did. A lot of people running 10 ply tires and mud terrains with no vibrations and there is no way that everyone of those people had their new tires road force balanced and my guess is for quite a few most of them would have tires with high road force variation with no vibration issues. The problem is something else, the one problem is there hasn't been an established vibration frequency at a particular speed. Everyone states it vibrates at around 70 mph on up but are we all experiencing a vibration at the same frequency. If we can establish that everyone is feeling the same thing we could assume it's the same faulty part if we are experiencing different frequencies at the same speed it's a different source from truck to truck. Mine vibrates at 40hz at 75 mph, which is exactly 3 times frequency of the tires at 75 mph. rules out the drive line, transmission and t case. Leaves wheels, tires, hubs, rotors, axle, differential, cv shafts, hub bearings. Already removed the cv shafts didn't affect things, tried multiple wheels and tires with no change, dealer checked rear diff said everything is good (not sure I believe them). Leaves hubs, rotors, axles and bearings. I need more sophisticated equipment to pinpoint the problem but haven't made the purchase. I just used my phone with an app called VibSensor by now instruments and software (free on android) to determine the vibration frequency, the console shakes plenty at 75 to give a good reading. A good vibration detector with an external accelerometer could be placed at different locations on the truck to narrow down the source. Why GM or the dealership doesn't do this is beyond me. GM if your reading this send me one of your PICO scopes for a little bit and I'll fix our mistake or do you know what the problem is and it costs too much to fix?????

[Wrench589]

I believe numerous owners have had their trucks diagnosed by the dealer using the Pico vibration analyzer, which will correlate the vibration frequencies to tire or driveline speed. Results - don't have. Are the dealers qualified to read and interpret the data? Don't know.

 

It is interesting that the vibration severity in the SUVs appears to be nowhere near the pickups. Now, the rear suspensions are completely different between the two. But, the other big difference is one piece body on the SUV vs separate cab and box. Thus, I would expect the SUV to add some overall stiffness that the pickup wouldn't have.

 

I recall years ago the Ford F150 has issue with the rear vibrating like crazy. Owners report they could see the box jiggling like crazy. Has anyone done anything like that to see what the box is doing relative to the cab? Maybe a Gopro?

 

Of course, it is likely that the body is taking the brunt of the frame flex on the SUV and hence the buffeting and pressure issue we are experiencing with the SUV. Less vibration, but the buffeting is brutal.

 

 

Has anyone wondered how much the Road Force number really are? To put it in perspective, I did a calculation to take the Road Force force and compare to an equivalent amount of mass unbalance at 110 kph, on my 22" wheels and tires. Here's what I got:

 

35lb RF = 1.6 oz (original GM spec for trucks with LT tires)

24lb RF = 1.12 oz (original GM spec for trucks with P metric)

18lb Rf = 0.84 oz (original GM spec for cars)

15lb RF= 0.7 oz (revised GM spec for trucks and SUVs with vibration and drone/pressure issues)

 

And, this is total mass unbalance. Often, this is split between inside and outside bead of the rim. So, for arguments sake, think about half and half.... So that looks like a 0.35 oz weight on the inside and another on the outside of the wheel. That's not a lot. Noticeable, yes. But not a huge amount, for sure.

 

Puts it in perspective, I guess. For what it's worth.

Edited December 25, 2015 by Wrench589

[Azgmcsierra]

I'm done with this POS 2015 GMC Truck, so I've just got myself a 2016 Toyota Tundra that doesn't vibrate at 75 mph. Got a really good trade in amount on a 4 months old truck with 16k miles....my payment went up $20 more a month.

[oneandzero]

It's not a wheel and tire issue at least for almost all. a few people have the vibe fixed by wheel/tire replacement majority of us have had countless road force balances and numerous wheel and tires changes with no affect. If you look at all the truck that are posted in the wheel and tire section and lift kit section on this site it's obvious most don't vibrate and never did. A lot of people running 10 ply tires and mud terrains with no vibrations and there is no way that everyone of those people had their new tires road force balanced and my guess is for quite a few most of them would have tires with high road force variation with no vibration issues. The problem is something else, the one problem is there hasn't been an established vibration frequency at a particular speed. Everyone states it vibrates at around 70 mph on up but are we all experiencing a vibration at the same frequency. If we can establish that everyone is feeling the same thing we could assume it's the same faulty part if we are experiencing different frequencies at the same speed it's a different source from truck to truck. Mine vibrates at 40hz at 75 mph, which is exactly 3 times frequency of the tires at 75 mph. rules out the drive line, transmission and t case. Leaves wheels, tires, hubs, rotors, axle, differential, cv shafts, hub bearings. Already removed the cv shafts didn't affect things, tried multiple wheels and tires with no change, dealer checked rear diff said everything is good (not sure I believe them). Leaves hubs, rotors, axles and bearings. I need more sophisticated equipment to pinpoint the problem but haven't made the purchase. I just used my phone with an app called VibSensor by now instruments and software (free on android) to determine the vibration frequency, the console shakes plenty at 75 to give a good reading. A good vibration detector with an external accelerometer could be placed at different locations on the truck to narrow down the source. Why GM or the dealership doesn't do this is beyond me. GM if your reading this send me one of your PICO scopes for a little bit and I'll fix our mistake or do you know what the problem is and it costs too much to fix?????

I've downloaded the app will be interesting to see the results. My butt has been verifying them for some time :/

Like others my truck also had the vibration at the 75MPH mark but now it seems to be at many speeds which I have to believe currently is the snow tires. Every time they removed them for balancing the truck comes back worse. I'm am going to stress my dealer replace these tires and if they don't I want documented RF results so I can present them to Firestone and try to get them to replace them. The dealer says these tires are causing the current issue. My theory is if they are replaced with known good tires and the truck still vibrates, then I can proceed to getting back at the original problem if it still exists.

[Jesse Davidson]

Merry Christmas & Happy Holidays ya filthy animals, May your holiday drives be as vibration free as possible.

[FogDucker]

If we can establish that everyone is feeling the same thing we could assume it's the same faulty part if we are experiencing different frequencies at the same speed it's a different source from truck to truck. Mine vibrates at 40hz at 75 mph, which is exactly 3 times frequency of the tires at 75 mph. rules out the drive line, transmission and t case. Leaves wheels, tires, hubs, rotors, axle, differential, cv shafts, hub bearings. Already removed the cv shafts didn't affect things, tried multiple wheels and tires with no change, dealer checked rear diff said everything is good (not sure I believe them). Leaves hubs, rotors, axles and bearings.

 

The SUVs buffet/boom at 70mph [and at 40mph]. The pickups vibrate at 70mph. Let's assume that it's the same root cause for a moment. We might rule out:

 

• transmission: occurs on proven 6-speed and new 8 speed
• suspension, at least parts of it: pickups have leaf springs; SUVs have coilover; occurs on traditional *and* magnetic suspensions
• tires/wheels: to your point, many of us had had multiple balancing sessions and replacements
• LWB vs SWB - they both do it

I've had my wheels road forced balanced at least once. They've also replaced the entire rear axle assembly - rotor to rotor. Both did result in a smoother ride, especially at higher speeds [90+mph] but did not change the buffeting that is prominent at 70mph. They also took down my head liner; the bows were intact.

 

What else is common between all the different models, regardless of trim or options?

 

Merry Christmas!

[Jesse Davidson]

I have have now followed the lead of Daryl Watkins and reached out to auto rags for the GM truck issues. maybe the trucks will be getting the attention he has been able to get put on the SUV's

[Jed Blanks]

My 2015 Sierra Denali 2wd crew Shakes and bounces. It doesn't vibrate. It's. Not constant, it's random. It does it on smooth roads.

 

I think posters should clarify what they have. There are those talking of vibration frequency. Subwoofer vibrates. my truck shakes or bounces.

 

Am I in the wrong discussion?

Edited December 25, 2015 by jblanks

[glcbn]

My 2015 Sierra Denali 2wd crew Shakes and bounces. It doesn't vibrate. It's. Not constant, it's random. It does it on smooth roads.

 

I think posters should clarify what they have. There are those talking of vibration frequency. Subwoofer vibrates. my truck shakes or bounces.

 

Am I in the wrong discussion?

 

IMHO, not wrong at all. Mine does a little "shake/vibration/bounce" whatever you want to call it, on the same stretch of smooth asphalt every single day. Other than that, smooth as glass even at 96mph! Figure that one out.

 

MERRY CHRISTMAS

Edited December 25, 2015 by glc

[Jed Blanks]

 

IMHO, not wrong at all. Mine does a little "shake/vibration/bounce" whatever you want to call it, on the same stretch of smooth asphalt every single day. Other than that, smooth as glass even at 96mph! Figure that one out.

 

MERRY CHRISTMAS

merry Christmas to you as well

 

Has anyone with shakes lifted the rear wheels off the ground and run the vehicle to see if rear wheels/rear end/ driveshaft shake?

 

It's strange because it's perfectly smooth at speeds below 20. Like parking lots and such.