2015 YUKON NOISE IN CABIN

Wrench589 · March 25, 2015

Tobtek, are those new/different shocks and springs they put on yours to try? I think so - weren't you saying that it rides way better now?

Shocks front and back?

Springs on the front or the back?

TOBTEK · March 25, 2015

I'll be happy to file a complaint with the NHTSA, these new SUV's are a complete joke for this kind of money ! My wife keeps saying GM wouldn't still be selling these trucks if there was a problem. Keep trying to tell her to do a quick google search on GM ignition switches. She sees these new trucks all over So-Cal and thinks everything is great with all these other trucks. There is no doubt it's less expensive for GM to deal with a few of us that can hear all the flaws in their design Vrs actually find, fix, and correct these issues. I'd do Anything to get my wife on board to off'ing rough riding, problematic, complete piece of junk.

Anyone else with a 8 speed having issues around 20-30 mph? It feels like it's in 20th gear. Then when the thing desides to go, we hear a " chirp " back in the exhaust system. This is everytime you drive slowly around 20-30 mph. Goes into V4 mode, when you give it a little bit of gas you get this rumbling chugging lack of power feeling. Can hear the motor chugging as well. Of course the service manager is saying " performing as normal "

AGAIN..... If your on the fense for a 2015 GM SUV, WAIT! Do not buy one of these yet. Too many issues at this point.

TOBTEK · March 25, 2015

Tobtek, are those new/different shocks and springs they put on yours to try? I think so - weren't you saying that it rides way better now?

Shocks front and back?

Springs on the front or the back?

Last time in they said they put the new updated shocks on. I'd love to see others where they haven't been changed out yet. Ours is better then it was, but no doubt still to firm. It's great on the freeway, but slow speed surface roads, driveways, speed bumps, parking lot dips are still too firm for my liking.

Wrench589 · March 25, 2015

Last time in they said they put the new updated shocks on. I'd love to see others where they haven't been changed out yet. Ours is better then it was, but no doubt still to firm. It's great on the freeway, but slow speed surface roads, driveways, speed bumps, parking lot dips are still too firm for my liking.

Are your the magnetic/adjustable ones? Can't remember if you've got an LTZ/Denali.

Jamac4567 · March 26, 2015

When test driving the vehicle the noise/buffeting will happen between 35-50 MPH and between 60-70 MPH windows up, everything else off. I found 68MPH to be the point of interest on the 13 Yukons, Tahoes, and Suburbans we had driven. Do yourself a favor and do not buy!!!! Its more hassle then its worth when you end up having problems. Our 2015 Suburban ended up being a buyback to GM but it took along time to negotiate the process and you will end up very frustrated and losing money.

Edited March 26, 2015 by Jamac4567

TOBTEK · March 26, 2015

Are your the magnetic/adjustable ones? Can't remember if you've got an LTZ/Denali.

Our first 2015 was a GMC 4wd SLT Yukon, which ended up as a buyback . These pictures are off the latest POS 2015i 4wd Escalade, which I wish I'd never had purchased. Oh what we do to please our wives.

Edited March 26, 2015 by TOBTEK

Wrench589 · March 26, 2015

Our first 2015 was a GMC 4wd SLT Yukon, which ended up as a buyback . These pictures are off the latest POS 2015i 4wd Escalade, which I wish I'd never had purchased. Oh what we do to please our wives.

What's that saying...."Happy wife, happy life"..... Oh what we do, indeed.

Wrench589 · March 28, 2015

Here's the deal.... Take your Tahoe/Suburban/Yukon/Yukon XL to a trustworthy dealership to have the roof TSB done. Make sure they do it correctly. (Important NOTE: if you don't supervise, there is a good chance it won't get done right. Why? Have a look up there after the headliner is removed and you tell me how easy it is to pick all that foam out, shim it up, and re-glue it. And, do the entire job, including removing the headliner and reinstalling it, in 4 hrs. Because that's all GM pays flat rate. After that, the Tech is working for free. Imagine how happy he is about that!). Anyway, be nice to your dealer and the Tech. And most important - have all the roof panel between the cross members covered with Dynamat. Yep, Dynamat. Even if you have to pay for it yourself.

Just got mine back from having this done today and I can't believe the difference. Totally different vehicle. Now, haven't put many kms on it, so we'll see long term if it lasts, but I can honestly say it made a huge difference. I don't hear any buffeting or feel any pressure on the highway. There is still a small amount of booming at low speed over big bumps, but it's minor and I am convinced normal for all body-on-frame SUVs (my Explorer does the same thing). So far, I think we've got it.

Still need to resolve the vibration in the steering wheel and the seat, but with the roof stabilized, the horrible noise seems to be under control.

My only concern is that if the glue let go once, what's to stop it from letting go again? Hopefully since they glue the entire length of the crossmembers in the repair instead of spots only at the factory, it won't let go. Fingers crossed!!

ateam_burb · March 28, 2015

I need to look at the TSB again but have to ask why glue is being used at the factory. Isn't it metal on metal? Why aren't they welded if that is the case? Good info on the dynamat, thanks.

Wrench589 · March 28, 2015

I need to look at the TSB again but have to ask why glue is being used at the factory. Isn't it metal on metal? Why aren't they welded if that is the case? Good info on the dynamat, thanks.

The joint between the roof skin and the crossmember/supports is a foam product, sort of like the stuff you seal windows with around the house, but more dense and more plyable. The product they do the repair with is made by SEM and is an "acoustic sealant" product. Similar properties I believe.

Yep, your $80,000 state-of-the-art truck is glued together!!

fondupot · March 28, 2015

I was on a business trip this past week and my rental was a 2015 Yukon XL. I experienced the "buffeting" noise at speeds 50+ mph. Super annoying.

Cant believe no one at GM noticed this when they tested the things.

Wrench589 · March 29, 2015

UPDATE:

Well, you know where this is going, right. Well, we picked it up after the roof "repair" on Friday. Seemed to be mostly sorted as I drive it home. My wife was out and about yesterday and said the same thing. Until today.... We took it out and I am sad to report that it seems to have reverted back to the same noises as before. More or less. It's always hard to tell for sure, until I take it out with the sound analyzer (which I will do). But suffice to say, I would not say it's fixed as of today. I guess my initial report was just that...initial!

Maybe it was wishful thinking on my part when I drove it home that is was good. But, I doubt it. I was listening for all my worth and didn't hear the buffeting and feel the pressure. Today, I would have to say it's back. So, what changed? The most logical explanation is exactly my fear all along - that you can't glue the roof on this vehicle. It won't hold. It didn't hold the first time and it won't hold no matter how many times GM goes in and re-glues it. They need to come up with an entirely different fix to secure that roof.

The other thing I did was ride in the second row while my wife drove. I can't believe how much the front passenger seat jiggles driving on smooth pavement at highway speeds. It's the same jiggle I feel in the steering wheel and the drivers seat when I'm driving. And likely the it's the vibration that it setting off the roof resonating (or whatever it is if in fact it ends up not being the roof).

Now what? I guess it will be back to the dealer and GM to see what they want to do next. I guess all we did was prove once again that the "fix" in the TSB doesn't work. Big surprise.

likeschevy · March 30, 2015

It is so strange that one SUV can have these problems and another has none. Ours have no issues I just hope it continues with no problems. I wonder what is the difference what causes one to have problems and another with none,, strange

Wrench589 · March 30, 2015

It is so strange that one SUV can have these problems and another has none. Ours have no issues I just hope it continues with no problems. I wonder what is the difference what causes one to have problems and another with none,, strange

Yea, that is the million dollar question, isn't it?

Since yours has no noise issues, could I ask you to do me a favour? Go sit in the rear (2nd row) seat and swing the door open and closed through the detents that hold it open. Either side. Go back and forth several times, not too fast. Tell me if you hear anything. Much appreciated!

jer1346 · March 30, 2015

I have a 2015 Yukon XL (SLT) 4x4 and it has the same noise problem. I have about 5,500 miles on mine. It's most noticeable between 35 and 45 MPH, in 6th gear when in the V4 mode.

I have had it to three GMC dealers. The latest dealer (Liberty Buick/GMC in Charlotte, NC) has had it for a week and they are removing and re-gluing to roof now. I do not think this will solve the problem, but it's what GMC wants to do.

If the issue is not resolved I am going to request GM buy my Yukon back. If they will not I will turn it over to my attorney for resolution. I have owned many Tahoe's, Suburbans and Yukons over the years, but I cannot live with my 2015 Yukon. So disappointing.