2015 YUKON NOISE IN CABIN

Wrench589 · February 2, 2015

I'm more than happy looking like a "buffoon" with my cotton balls... You know why? It fixed 95% of the pressure I had... Have you used the idea yet, or have you simply used a cloth and tape? "JasonDenali" had his dealer actually use the idea and it seems to be working for him... Are we "idiots" now?

It seems your vehicle is having more problems than this topic will cover. Have the dealer distroy your truck and replace whatever they see fit... You keep referencing back to the roof fix, when more people have stated it didn't work.. Try the rearend replacement, and like Zip said, post up if that fixes it.

I apologize if my comments offended you. I absolutely meant no offence to you directly. And I absolutely believe that you have noticed a difference with cotton installed. Please accept my apologies.

Yes, I have tried cotton and found it did not resolve the issue. In fact, based on comparative measurements with a sound analyzer, the SPL actually increased at 22 hz by about 8 dB with the cotton inserted compared no cotton. Also noteworthy is that the sound signature is almost identical all all frequencies with ANC turned on and turned off. All based on the same road speed, same exact section of road.

The reason I am using a sound spectrum analyzer for comparative measurements is that using the ear for comparisons can be very objective. I don't want to be relying on my memory alone. Although I do agree that if you don't hear it, then it's all good!

Zip, I would be surprised if the cotton "falls" out. There is no where for it to go. The plastic grill will keep it well secured inside the foam ring that is present, so it would be physically impossible for it to move. That is, if the space in the foam ring was completely filled to begin with.

That does beg the question - for those who have removed their grills, is the foam ring present? Maybe some vehicles don't have it and that's why some folks need to fabricate something to secure the cotton. It is literally a round black foam ring about 3/8" thick, outside diameter about the size of a nickel, and a hole in through middle.

The Zip · February 2, 2015

20sierra did not use the cotton with the grille, the grilles were left in the cupholder. There was nothing to hold down the cotton that's why it moved and needed to be replaced. Part of the Mic Well concept is to keep the cotton in place, or he could give the grille combined with the cotton a shot. The grille combined with cotton should keep the cotton within the center of the mic, but will do nothing around the mic. 20sierra's concept is to put cotton in the center and around the mic. Another part of the Mic Well is to isolate around the mic. And if cotton is used, to keep it in place. Keep in mind the Mic Well wasn't fabricated to use with cotton, but if cotton is used it will keep it in the center, around, and in place.

Edited February 2, 2015 by The Zip

The Zip · February 3, 2015

Went to the GMC dealer to pick-up some grilles (actually called grilles) to do some testing with the Mic Well, but the cost was 26 bucks. Too expensive for me to conduct testing when its not going to benefit me. But I did find out the grille can't be sold separately, it comes with the mic. This would suggest the mic comes off. Someone take a flashlight and look around in the mic area, there may be a screw to take the mic off. That would be an option equivalent to pulling pins or disabling the mic. If that is the case, there would be no need for cotton, tape, ear plugs, mic plugs, mic well, or anything else that was mentioned.

Wrench589 · February 3, 2015

Unfortunately, it looks like the entire headliner must be removed to get access to the back of the microphones. With the grill removed, there is a black plastic bracket on the opposite side of the hole in the headliner. It appears to be held in place by something on the top side of the headliner. I tried to move it but it is well secured. The microphone itself is quite small and can be seen through a very small hole in the middle of that black bracket. But, not possible the get at it, or it's wires.

If someone wants to disconnect the microphones, could do so at the amplifier itself. Looks like once the retaining clip is removed, the wires can be removed from the plug housing. Should be able to do without any permanent damage. Just don't forget to take a photo before removing the wires so they can be returned to the correct location.

TOBTEK · February 3, 2015

Did some pushing on the head liner. All up front its 100% tight with no movement till you get to the sunroof and DVD player. Then it's super loose. Apx 2" of movement back by the AC vents.

While I wasn't initially inclined to have this dealer take the whole brand new Esclade apart. At this point, do whatever you want! Just can't handle it anymore. I love buying a new 85k car and dealing with this nonsense.

What's odd is some people have stated they aren't experiencing this pressure / buffeting. I haven't been in one 2015 Tahoe, Yukon, Escalade. Short and long that hasn't had this issue. I'm GUESSING others aren't sensitive to the pressure, or they just don't know what to be looking / hearing for. ??? My wife thinks I'm crazy, and she thinks our Escalade is the best thing ever. Our two daughters of course don't have a clue what the pressure is, but continuely complain that their ears hurt, and won't pop.

Let me call CCC again for the fourth day in a row and see if someone with try to get this moving in the right direction. Not a fan of this dealership !

Anon2015 · February 3, 2015

If CCC is no help, the BBB Autoline is an attention grabber. While the Bose audio system is a cheap, poor excuse for audio in a car at this price point and the Bose ANC does have 'issues', it is the effect or symptom. It is not the cause. With 1000 of these being pushed out the door every day and only a small number of people reporting the problem, you can see why it isn't high on GM's priority list. That being said, those who have had medical issues, required consultation with a doctor, experienced dizziness, vomiting, disorientation or ear pain should be reporting these matters to the NTSB. That's the only way (a) it will really get attention and (b) there will be a published cause and resolution. Neither ZIP nor myself can be of much help since we don't have the issue.

As to individual sensitivity...yes, that is highly likely and equally likely problem vehicles are on the road and the owner is not aware of it. In my case, as an acoustician, I can tell you my two do not have the problem. When number 3 arrives that may change.

Wrench589 · February 4, 2015

If CCC is no help, the BBB Autoline is an attention grabber. While the Bose audio system is a cheap, poor excuse for audio in a car at this price point and the Bose ANC does have 'issues', it is the effect or symptom. It is not the cause. With 1000 of these being pushed out the door every day and only a small number of people reporting the problem, you can see why it isn't high on GM's priority list. That being said, those who have had medical issues, required consultation with a doctor, experienced dizziness, vomiting, disorientation or ear pain should be reporting these matters to the NTSB. That's the only way (a) it will really get attention and (b) there will be a published cause and resolution. Neither ZIP nor myself can be of much help since we don't have the issue.

As to individual sensitivity...yes, that is highly likely and equally likely problem vehicles are on the road and the owner is not aware of it. In my case, as an acoustician, I can tell you my two do not have the problem. When number 3 arrives that may change.

Excellent point about reporting it to the NTSB! Never thought of that. I would except .... I'm in Canada. Our version, Transport Canada, is supposed to do the same thing, but from what I've seen of the NTSB website, it's a fair bit ahead of TC. Still, I might look into it. Thanks!!

BTW, what area of acoustics do you work in? Sounds very like a very interesting field.

To Tobtek's point, I agree that there is likely quite a few folks driving around with the same issue, possibly to various degrees of severity, that don't notice. That's sound for you! Some folks notice. Some don't. Some don't care.

Also, I definitely find my headliner is quite loose. An inch or two of movement at the mid-cabin. And, when I thump it with my hand, I hear the same sound as when driving (for only a cycle or two, mind you). Coincidence??

october · February 4, 2015

Excellent point about reporting it to the NTSB! Never thought of that. I would except .... I'm in Canada. Our version, Transport Canada, is supposed to do the same thing, but from what I've seen of the NTSB website, it's a fair bit ahead of TC. Still, I might look into it. Thanks!!

BTW, what area of acoustics do you work in? Sounds very like a very interesting field.

To Tobtek's point, I agree that there is likely quite a few folks driving around with the same issue, possibly to various degrees of severity, that don't notice. That's sound for you! Some folks notice. Some don't. Some don't care.

Also, I definitely find my headliner is quite loose. An inch or two of movement at the mid-cabin. And, when I thump it with my hand, I hear the same sound as when driving (for only a cycle or two, mind you). Coincidence??

Assuming the headliner is contributing to the sound, have you had a passenger push up on the headliner (to minimize it moving) while driving to see if it makes a difference?

Wrench589 · February 4, 2015

Assuming the headliner is contributing to the sound, have you had a passenger push up on the headliner (to minimize it moving) while driving to see if it makes a difference?

Excellent question. No, not yet. But I plan to, or something similar.

Anon2015 · February 5, 2015

Drove #3. Today. Nope, no buffeting, no pulsing pressure, no vibrations...still a crummy Bose system with overly aggressive bass.

TOBTEK · February 6, 2015

Drove #3. Today. Nope, no buffeting, no pulsing pressure, no vibrations...still a crummy Bose system with overly aggressive bass.

I'd be happy with a Pep-Boys Radio if ours didn't have the pressure and sound issues. I just don't drive the new Escalade anymore. Not worth getting upset over for the day.

Has anyone else recieved a call from "GM early response team" ? I recieved a VM from a representative yesterday. Never spoke with these people when the Yukon was purchased back.

FogDucker · February 6, 2015

I'd like to thank all contributors of this thread for the continuous sharing of information. I was just about to order a 2015i Yukon Denali this week, but am concerned that:

There is no clear indication of what the problem is. Seems to be the roof. Or maybe the noise cancellation? Or, is the noise cancellation really just a symptom of the roof problem? [#PIT5318, "Wind Buffeting Droan Type Noise and/or Body Pressure Booming." Document ID: 3975780]
It isn't clear if the deficiency has been fixed at the factory and that all 2015i models are noise free.
Whether dealers have the tools & information to properly deal with this manufacturing defect.

I don't have false expectations that GM builds perfect cars, especially in the first model year. I do expect that dealerships [and their supplier, GM] take ownership for the problem(s) and do what it takes to keep customers happy. What some of you have experienced is horrific, especially at this price point.

--

Marc

FOURKNUCKLES · February 6, 2015

So what are the chances of someone unhooking all the power and towing the vehicle down the road while sitting inside. That would at least narrow it down. Either electrical or mechanical.

The Zip · February 6, 2015

Pushing on the flexible part of the headliner while the vehicle is off, windows up, and in park may have similar effects as driving or towing. Probably not electrical or mechanical, but a R&D error in headliner flexibility (just talking pressure)

FogDucker · February 6, 2015

@fourknuckles: If it was a roof flex problem, the wind resistance/pressure/profile would be very different behind a tow vehicle versus one pushing itself into the wind on it's own steam, no?

@Zip: How about pushing up on the headliner while driving at speed? In essence, prevent the roof from flopping by applying upward pressure?

@GM who seems to monitor this forum: is it unreasonable for you to reach out to management at the Texas factory to get feedback? Back when f-bodies were built in Canada, the Camaro/Firebird club had some contact and even took a couple of tours of the factory. We're not looking for top-secret information, just looking to make an informed purchase.

--

Marc