Shake or Vibration Issues

[Jamesandrew4]

First post on here. Just got a 2016 Sierra all terrain crew cab. There is a definite vibration in the steering wheel, I mainly notice it a low RPM 1200 or so in both v4 and v8 and in all 4x4 modes. I see all the posts and others having the problem. What is the solution who has actually had GMC dealership find and fix the issue? I am not a fan of waiting for things to get worse and gm to figure out what to do.

 

Thanks for all your guys help and looking forward to being on the forum and showing pics of new truck an upgrades to come.

[Newell33]

Yea, these vehicles are definitely not "over engineered". That's just plain silly. Let's face it, if they were engineered properly, all the issues would have been addressed. If making the frame stiffer creates a problem, proper engineering would design out the problem. Lots of vehicles have been re-designed with stiffer chassis and did not exhibit such a sensitivity as these trucks from GM.

It's clear that these vehicles are "under engineered". There are many potential,reasons why this happened. No point speculating here. Bottom line is GM did not do a thorough enough job engineering ALL the parameters that needed to engineered. That's on them, not the people on this forum that just want a vehicle that rides atbleastbas smooth as the previous generation!! And if GM's excuse is that "well, we had to make the frame stiffer to give it higher payload and towing capacities to keep up with our competitors because all you stupid customers buy on brochure ratings", then all I have to say to GM is "really, that's all you got? Pathetic. GM, you are big boys. Out your big boy pants on, and do your jobs and quit whining like little girls". (No offence to the ladies I the crowd).

From the horrible transmission and AFM tuning, to the faulty seat heaters, the extensive vibration issues, the high pitched 4x4 dash noise, the loose seat tracks, the bad radio reception, and the bad headlights headlights, I'd second that these trucks were definitely under engineered. Everywhere you look there's an example of poor engineering and/or poor quality control.

[Jesse Davidson]

I have to admit, there's a lot of "entertainment" value in this thread from all the keyboard engineers. Various claims of cheap parts, cheap tires, poor QC, only being profit minded, calls for a recall (and a recall of just exactly what remains to be seen, kinda hard to do a recall without both an identifiable problem and a fix) etc. A lot of people here aren't thinking this through at all.

 

 

Anyone who thinks GM isn't working on this is just plain stupid. If there was an easy fix, there'd be a TSB in a heart beat. If you really think about this for a moment, you'll begin to realize that the core problem is these trucks are OVER engineered. Yes, I said it. Frame stiffness being number one, In trying to achieve ever increasing tow ratings. It has created an environment in which everything has to be perfect. Tires, wheels, all rotational parts and assemblies. Ever increasing unsprung weights with increased wheel and tire sizes, etc. It's very likely, that this will require some sort of vibration dampening system. Whether that can be an add-on, or if it requires integration into a new frame/truck design, who knows.

 

Tires are a big part of this, it's obvious that getting perfect tires from several tire manufacturers is a difficult task. And even tires that start out "perfect" can change with mileage if there is irregularities in the rubber compound causing them to wear unevenly. The sad reality is, all the parts are made by humans, or by input from humans, and are only as good as the effort put in by those humans on any given day. Remember this when you don't give it your "all" in your own job.

I love when new people decide to join and comment on how great these trucks are then go on to try to insult those of us who are actually working to try to get resolution. I'm sorry that we expect things to work properly, and actually have them fixed in a timely fashion instead of having to wait years (some not me).

 

From the horrible transmission and AFM tuning, to the faulty seat heaters, the extensive vibration issues, the high pitched 4x4 dash noise, the loose seat tracks, the bad radio reception, and the bad headlights headlights, I'd second that these trucks were definitely under engineered. Everywhere you look there's an example of poor engineering and/or poor quality control.

yup

 

First post on here. Just got a 2016 Sierra all terrain crew cab. There is a definite vibration in the steering wheel, I mainly notice it a low RPM 1200 or so in both v4 and v8 and in all 4x4 modes. I see all the posts and others having the problem. What is the solution who has actually had GMC dealership find and fix the issue? I am not a fan of waiting for things to get worse and gm to figure out what to do.

 

Thanks for all your guys help and looking forward to being on the forum and showing pics of new truck an upgrades to come.

welcome to the worst mistake of your vehicle buying life

[Jamesandrew4]

Hello,

 

I am sorry to hear that you are experiencing a concern with your vehicle. We strive for you to love you vehicle. If I can be of assistance to resolving your concern, please let me know.

 

Sincerely,

 

Jennifer T.

GM Customer Care

 

Jennifer you can contact me please I just bought a 2016 Sierra All terrain crew cab. Private message me for my info and let me know what you can do to help. I have vibration issue through the steering wheel and my radio has acts it up on multiple occasions the volume button not working. My climate control button not working etc

[abominable z71]

I've played around with this program a little. Nice little program. Not so sure about the "PSD" units as I'm used to dealing with raw vibration units such as in/s or g's. In fact, we normally look at in/s units at lower frequencies because g's tend to be lower at lower frequencies so get a better signal to noise ratio. I think the PSD unit tries to normalize that somehow, so maybe not so bad.

 

That said, my concern with readings from this program is that the phone is simply resting on something and is not secured to it. It is important the the sensor be tightly bonded to the surface of the item being measured or errors will be introduced into the readings. Now, this is more critical at higher frequencies, but I'm still leery of it at lower frequencies like 40.

 

The PSD is the power spectrum density . It is what you think, takes the square of frequency divided by the frequency that it occurs. I was more curious as to the frequency which the primary vibration occurs than the amplitude of the vibration to try and narrow down which part could possibly be the source. The readings in the graph were taken at 76 mph. First order vibration at 13.3 second at 26.6 and third at 39.9 and the first order drive line would be 45.5. Taking into account it is just an accelerometer in a phone, mounting, the FFT algorithm and truck speedometer accuracy the results are pretty much spot on for the vehicle speed, small spikes at 13, 27 and 40 and a small drive line vibe at 46 Hz. Its pretty safe to say the vibration is a third order related to the tire angular velocity. To test the app I induced a large drive line vibration by putting a few hose clamps on it and it indeed generated a larger spike and caused a beating vibration when it combined with the 40 Hz what was really interesting is even with a significant amount of unbalance on the drive line the PSD at 46 hz was still nowhere near as large as it was at 40. The tires have less than 10 lbs force variation checked on 2 different machines at different shops they have been trued and balanced on the vehicle (lateral and radial run out were low even before truing) and it continues to vibrate I keep going back to the rear end because its the only assembly that has parts turning at the same velocity as the tires that also have surface contact that could generate something third order that and the front hub bearings it just seems like a bearing issue would have gotten much worse after 15k miles. Assuming the data is accurate what besides tires caould cause it, any thoughts Wrench? A few people claim a fix after replacing the rear some said it was only temp and the vibe came back. It's maddening I tell you.

[abominable z71]

Over engineered is when the design is capable of performing well beyond its working rating for example rated to tow 10k lbs and haul 1.5k lbs but could easily tow 15k and haul 2k and still deliver acceptable NVH levels.

 

Under engineered is when it cannot deliver on it's working rating while still providing acceptable NVH levels. Great I have a truck with a light super stiff frame that can tow 10k lbs but its going to vibrate at freeway speeds when unloaded because the engineers didn't do anything to damp the vibrations transmitted by the stiff frame. Hardly over engineered.

 

I bought a Lexus a few years ago and while we were car shopping we looked at an E class Mercedes. The salesman for whatever reason felt the need to show us how well the door hinges were designed, put the window down put all his weight on the door with it fully open and bounced up and down and claimed they can handle 600 lbs of additional weight with the door fully open. No where in the Mercedes brochure did they advertise this as a feature. That's over engineered. GM did tell me I was getting a truck rated to tow this and haul that while providing a smooth ride with the most quiet cabin, they delivered on this for about 2k miles. Window sticker, brochure or salesman didn't mention the latent vibration feature though.

[Jesse Davidson]

Over engineered is when the design is capable of performing well beyond its working rating for example rated to tow 10k lbs and haul 1.5k lbs but could easily tow 15k and haul 2k and still deliver acceptable NVH levels.

 

Under engineered is when it cannot deliver on it's working rating while still providing acceptable NVH levels. Great I have a truck with a light super stiff frame that can tow 10k lbs but its going to vibrate at freeway speeds when unloaded because the engineers didn't do anything to damp the vibrations transmitted by the stiff frame. Hardly over engineered.

 

I bought a Lexus a few years ago and while we were car shopping we looked at an E class Mercedes. The salesman for whatever reason felt the need to show us how well the door hinges were designed, put the window down put all his weight on the door with it fully open and bounced up and down and claimed they can handle 600 lbs of additional weight with the door fully open. No where in the Mercedes brochure did they advertise this as a feature. That's over engineered. GM did tell me I was getting a truck rated to tow this and haul that while providing a smooth ride with the most quiet cabin, they delivered on this for about 2k miles. Window sticker, brochure or salesman didn't mention the latent vibration feature though.

Very well put

[Vibe15]

Update. Purchased 1/4/16. 31 days straight in service.

 

2/18 picked up 1hr ago... NO CHANGE WHAT SO EVER!!!

 

Went through 13 tires to meet GM specs. Not counting trying tires n wheels from 2 new trucks on lot.

Last 3 tires where shipped directly from Goodyear because other tires didn't meet GM specs

 

Cost GM $1100 for rental and who knows how much more for everything else.

 

Service manager doesn't know what to say. ( again great guy )

 

Taking it to ANOTHER dealer.

[hotrodz37]

Some guys over on the F-150 forum are having issues as well. Some are finding their pinion angles are off.

 

http://www.f150forum.com/f118/2015-f150-fx4-vibration-help-297498/

 

I am pretty mechanically inclined but don't know much about driveline angles. If our pinion angles are off, I would assume the vibe would be at most speeds rather than just at highway speeds. Can anyone confirm?

Thanks!

[Vibe15]

2/18

Just left new dealer. Head service tech went for long ride with me and agreed there's a vibration.

 

Service manager said he will call me Monday. Has to discuss with his director if they'll take it in. ??? He's on vacation till Monday.

 

Didn't really care what has been done to it already. Said they would have to start from scratch and RFB all over again.

 

Again SPEACHLESS!

 

Till then folks.....

[polarys425]

I can see it will be impossible to discuss something with people who have no clue what the difference is between an engineering spec and manufacturing variances, as well as assembly variances when 100+ different people are involved.

 

As for my over engineered comment, I was referring to the frame mainly, sorry if I didn't spell that out for ya.

[paxtonman]

I can see it will be impossible to discuss something with people who have no clue what the difference is between an engineering spec and manufacturing variances, as well as assembly variances when 100+ different people are involved.

 

As for my over engineered comment, I was referring to the frame mainly, sorry if I didn't spell that out for ya.

 

3 Years, and I've had 2 of these trucks vibrating, it's impossible for you to know how much this pi**es me off

[polarys425]

From the horrible transmission and AFM tuning, to the faulty seat heaters, the extensive vibration issues, the high pitched 4x4 dash noise, the loose seat tracks, the bad radio reception, and the bad headlights headlights, I'd second that these trucks were definitely under engineered. Everywhere you look there's an example of poor engineering and/or poor quality control.

 

Funny, my transmission shifts great, I NEVER feel the AFM go from V4 to V8 and back. Seat heaters work great, no high pitched 4x4 dash noise, radio reception is fine, seat tracks aren't loose, and the headlights have no issues, granted I have the standard headlights.

 

If it were engineering, all trucks would suffer your list of "issues". Engineering and manufacturing variance are two different animals.

From the horrible transmission and AFM tuning, to the faulty seat heaters, the extensive vibration issues, the high pitched 4x4 dash noise, the loose seat tracks, the bad radio reception, and the bad headlights headlights, I'd second that these trucks were definitely under engineered. Everywhere you look there's an example of poor engineering and/or poor quality control.

 

Funny, my transmission shifts great, I NEVER feel the AFM go from V4 to V8 and back. Seat heaters work great, no high pitched 4x4 dash noise, radio reception is fine, seat tracks aren't loose, and the headlights have no issues, granted I have the standard headlights.

 

If it were engineering, all trucks would suffer your list of "issues". Engineering and manufacturing variance are two different animals.

[pm26]

Has anyone attempted balancing the wheels on the truck to see if vibration will be less intense afterwards? Besides wheels/tires, brake rotors and hubs can be out of balance. Axle shafts may be also contributing to Vibration. Also, on 4WD trucks the front axle shafts turn all the time as there are no lockout hubs on these trucks. So these can contribute to vibration as well if not properly balanced. Being manufactured primarily in third world countries with insufficient quality control, all rotating parts are suspect.

Edited February 18, 2016 by pm26

[polarys425]

 

3 Years, and I've had 2 of these trucks vibrating, it's impossible for you to know how much this pi**es me off

 

Guess you truely have no one to be pissed at other than yourself for not buying something else after all this time. Just sayin'.