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2015 YUKON NOISE IN CABIN

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wot_denali Enthusiast

wot_denali

Posted
Posted
55 minutes ago, Nick Useini said:

I I replaced my struts at 45k with  part number 84061228 and jit rides much better than the original ones. i also just saw an even newer part available 84176631.  When these struts totally fail they ride like hell and you must replace them asap! It feels like no shocks and springs,  just solid and extremely dangerous!! I mean stiff as hell.

 

I also upgraded my 2015 suburbans tires  to the BF goodrich plus (linked below). These tires are oem on the Escalade and do ride much better with less road noise. Still booms in 4 cyl mode at speeds like 25mph and a couple different conditions. If you do mostly highway driving you should be fine, but at this price point it's ridiculous to even say such a thing .lol

 

 

. https://www.tirerack.com/tires/tires.jsp?tireMake=Bridgestone&tireModel=Dueler+H%2FL+Alenza+Plus&partnum=845HR2HLALNP&vehicleSearch=true&fromCompare1=yes&&autoMake=Chevrolet&autoYear=2015&autoModel=Suburban&autoModClar=LTZ&&autoMake=Chevrolet&autoYear=2015&autoModel=Suburban&autoModClar=LTZ

Since I replaced my 4 shocks with normal gas shocks and since I installed 17" methods with yokohama and tuned the car  with full time v8 mode and also replaced the steering bushing with the updated ones all of that car is normal now that any gm suv should be.

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FOURKNUCKLES
FOURKNUCKLES

ANYONE ELSE HEARING LIKE A BUFFERING SOUND? MAKES YOUR EARS FEEL LIKE THE WINDOW IS DOWN, BUT IT IS NOT? I TOOK IT BACK TO THE DEALER, THEY HEARD IT. WE GOT IN ANOTHER 2015 YUKON XL AND HEARD THE

jer1346
jer1346

I've had my 2015 Yukon XL back for 1 day after it was in the shop for over 3 weeks (this time). The buffeting is the exact same, with no improvement whatsoever. I am having 500 cheap business cards p

FogDucker
FogDucker

Hi all,   I created an online survey to better quantify the issues surrounding our trucks. The goal is to get more accurate numbers. The survey is open to *everyone*, including those with no vibra

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need-for-speed Enthusiast

need-for-speed

Posted
Posted
On 12/4/2017 at 9:34 PM, Shaun said:

Two months ago I bought a new 2017 Tahoe that has this issue (buffeting and booming that causes ear pressure).  I've taken it to my local Chevy dealership twice now.  First time they removed the headliner and saw that the roof wasn't glued to one of the cross bars so they fixed that. I brought it back a second time because the buffeting and booming was still there.  The service manager said he test drove it and found nothing wrong.  He said the car feels normal to him and another mechanic.  He said he has never had anyone else claim this problem.  I brought the car back for a third time today but the service manager said they won't even look at it. I know that I have to give them 3 chances to fix the issue before I file for lemon law buy back.  The Tahoe will sit at the dealership for the next 10 days while I'm out of town for work.  

 

Here's what my very helpful Chevrolet Customer Assistance Rep had to say about my situation today:

"At this time, the dealer isn't going to make any repairs to the vehicle because they don't find anything wrong. Being that we're not technically inclined here at Customer Service, we're at a standstill due to the dealer being the eyes and the ears for us and them not able to proceed further because there isn't an issue present at this time."

 

Anyone have any advice?  Can I start the Lemon Law buy back process or must they actually attempt to fix something?

I assume when you refer to ear pressure/ booming/ buffeting,  it is with all windows up and no open sun roof, correct? 

need-for-speed Enthusiast

need-for-speed

Posted
Posted

Funny thing is I've spoken to several people with these vehicles and all of them say they have no such issues and they love their Tahoes..........

Elripster Enthusiast

Elripster

Posted
Posted

Folks, the roof is the problem. I bought some hard rubber stock from MMC and fabbed up some spacers to wedge between my roof rack and roof and the problem disappeared.  Take off the spacers and it comes right back.  My 'burban is awesome now with the spacers in place. 

 

These trucks are made of extremely thin sheetmetal.  The roof, short of welding it to the bows, will just pull itself free.  You need to hold it down by some means.  I suppose you could rivet it to the bows but you'd need to seal it very well.  Maybe one could bedliner the roof to stiffen it if they wanted.

 

Anyway, if anyone has this issue, you have two choices.  Make GM buy it back or find a way to hold the roof down.  All the tire combos, etc... might make it a bit better, but rest assured you will find a road or speed condition that gets the roof flapping.  Hold the roof down, you can run all kinds of tires, etc... just like any other normal vehicle, and enjoy them.

 

Frank

Shaun Enthusiast

Shaun

Posted
Posted
3 hours ago, need-for-speed said:

I assume when you refer to ear pressure/ booming/ buffeting,  it is with all windows up and no open sun roof, correct? 

yes, all windows and sunroof completely closed.

Jeff Westley Enthusiast

Jeff Westley

Posted
Posted
14 hours ago, Elripster said:

Folks, the roof is the problem. I bought some hard rubber stock from MMC and fabbed up some spacers to wedge between my roof rack and roof and the problem disappeared.  Take off the spacers and it comes right back.  My 'burban is awesome now with the spacers in place. 

 

These trucks are made of extremely thin sheetmetal.  The roof, short of welding it to the bows, will just pull itself free.  You need to hold it down by some means.  I suppose you could rivet it to the bows but you'd need to seal it very well.  Maybe one could bedliner the roof to stiffen it if they wanted.

 

Anyway, if anyone has this issue, you have two choices.  Make GM buy it back or find a way to hold the roof down.  All the tire combos, etc... might make it a bit better, but rest assured you will find a road or speed condition that gets the roof flapping.  Hold the roof down, you can run all kinds of tires, etc... just like any other normal vehicle, and enjoy them.

 

Frank

@Elripster Frank, this is brilliant.  I'm doing this tonight!

Shaun Enthusiast

Shaun

Posted
Posted
15 hours ago, Elripster said:

Folks, the roof is the problem. I bought some hard rubber stock from MMC and fabbed up some spacers to wedge between my roof rack and roof and the problem disappeared.  Take off the spacers and it comes right back.  My 'burban is awesome now with the spacers in place. 

 

These trucks are made of extremely thin sheetmetal.  The roof, short of welding it to the bows, will just pull itself free.  You need to hold it down by some means.  I suppose you could rivet it to the bows but you'd need to seal it very well.  Maybe one could bedliner the roof to stiffen it if they wanted.

 

Anyway, if anyone has this issue, you have two choices.  Make GM buy it back or find a way to hold the roof down.  All the tire combos, etc... might make it a bit better, but rest assured you will find a road or speed condition that gets the roof flapping.  Hold the roof down, you can run all kinds of tires, etc... just like any other normal vehicle, and enjoy them.

 

Frank

Very interesting. Can you post pictures of these spacers and where you put them?

Luvgmc Enthusiast

Luvgmc

Posted
Posted

Well i was one of the  original people that started this for him I bought a 2015 Yukon with cabin pressure I got them to do a buyback.  Then I ordered the 2015 midyear that supposedly fix the problem. I did not except the vehicle when I Came in it had the same problem. My wife would love to have a Yukon we just took out a 2018 yukon xl.  And it has the same issue from all the way back into 2015.  I give up I will wait until 2020 when we see the next model. Its unreal.  It is so bad that I talk to salesman at the dealership and they are having trouble selling The yukons because of the issue. They 99 out of a 100 have the issue.  

Shaun Enthusiast

Shaun

Posted
Posted
On ‎12‎/‎21‎/‎2017 at 6:48 PM, Elripster said:

Folks, the roof is the problem. I bought some hard rubber stock from MMC and fabbed up some spacers to wedge between my roof rack and roof and the problem disappeared.  Take off the spacers and it comes right back.  My 'burban is awesome now with the spacers in place. 

 

These trucks are made of extremely thin sheetmetal.  The roof, short of welding it to the bows, will just pull itself free.  You need to hold it down by some means.  I suppose you could rivet it to the bows but you'd need to seal it very well.  Maybe one could bedliner the roof to stiffen it if they wanted.

 

Anyway, if anyone has this issue, you have two choices.  Make GM buy it back or find a way to hold the roof down.  All the tire combos, etc... might make it a bit better, but rest assured you will find a road or speed condition that gets the roof flapping.  Hold the roof down, you can run all kinds of tires, etc... just like any other normal vehicle, and enjoy them.

 

Frank

Frank, I ordered two cross bars so I can try your fix.  Can you provide a picture of the fabricated spacers and/or a link to the hard rubber stock you bought?

Wrench589 Enthusiast

Wrench589

Posted
Posted

Been a while since I was on this forum. Thought I would check in.  Can't say I'm surprised to see that this issue still exists. Many of us always said it seems to be a basic design issue, and looks like that is the case. Sad.

 

My update is that after 78,000 km, I hardly notice the buffeting. And no, it's not that much m used to it.... it's still there. But not nearly as prevalent as it was when the truck was new. Only in certain road surfaces, or after the vehicle sits for several days and flat spots the tires, is it as bad as when new. Why the improvement? No idea. Only theory I have is the suspension and body bushings are getting worn/softer, and changing either stiffness (and hence natural frequencies) and/or the transmissibility of vibrations from the tires and drivetrain.

 

in fact, the worst vibration in feel in then steering wheel is in V4 mode. Definitely generates more vibration. But, we've learned to live with it. 

 

We we still like the vehicle for its size for our family, and it looks great. But I will certainly never buy a GM product after this turd-mobile. GM screwed something up on this and decided not to come up with a true fix. Arse-wipes!

 

i haven't tried Franks fix with the roof rack cross bars, but thought of it back in 2014 right after I bought the thing. I guess I couldn't  bring myself to fork over $500 more to GM (or whatever they cost) to fix their screw up. On principle!

Elripster Enthusiast

Elripster

Posted
Posted

I did model them in SolidWorks but I have not built to the model. I just made them to-fit with my band saw.

 

So my prototypes are urethane bar stock.  I used (2) 1.5" square pieces (24" length) glued together but going forward I would use something harder.  Maybe something like this...  https://www.mcmaster.com/#=1ava2d9

 

I also suspect going to 36" will help as well.  I use 2" wide weather stripping between the bars and roof itself.

 

I drilled holes to get the radii and then cut into them tangentially with the band saw to try to mimic the shape of the roof racks.  I did have to purchase the roof racks separately since my truck did not come with them.

 

The good news is that I am completely happy with this truck.  I went up a size to some more off road worthy tires since I camp and occasionally get the truck into 4 low (locker works!).  It rougher as expected but it's not different now than any other truck with larger harder tires.

 

If this does not get rid of the booming, Dynamat or equivalent will.  Buffeting is a very low frequency phenomenon where the booming is higher in frequency and well addressed by Dynamat or similar.

 

image.thumb.png.15a8355a51829b29d85690cce6897047.png

 

 

Anon2015 Enthusiast

Anon2015

Posted
Posted

It's sad GM walked away from this issue. Other than being skeptical about small turbo charged engines, I do believe Ford just torched GM with the Expedition...better thoughtful design, better technological features, better sound system, and comparable price points.

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