2015 YUKON NOISE IN CABIN

ateam_burb · January 7, 2015

The ANC may play a part in this but there are vehicles that don't come equipped with it as far as I know. I flat out asked a GM engineer if my 2015 suburban LT had ANC was told it could (or not) but there was no easy way to tell without investigation of the radio and software installed.

A post awhile back indicated that perhaps the suspension was too stiff and what some are experiencing is vibration resonating up through the cabin. For my vehicle, I believe this is exactly what happened, and the key word is resonate. As an easy test (with or without a fuse pull or cotton balls) first find a section of road with a nice long row of raised center reflectors, usually spaced a few inches apart from one another. Driving safety comes first so you may want to do this when no other vehicles are around. Stop your vehicle and then slowly drive the driver's side tires over the reflectors, slowly increasing your speed to 5 -10 MPH. Maintain whatever speed you get to when the vibration starts, about 8 MPH from what I experienced.

The first thing you'll notice, at least I did, is that after a few seconds the interior of the cabin will shake and vibrate like there's an earthquake inside the vehicle, and the longer you drive the worse it gets. I am NOT exaggerating about the level of vibration here, it feels like the vehicle will shake apart. I would only drive with this shaking only for a number of seconds in fear that the vehicle would be damaged somehow. The second thing you'll notice is the pressure building up and the buffeting sensation reported here in this thread.

So, could it be the ANC contributing to this, I don't know, I'll defer to the acoustics experts here and at GM. What I do know is that I've never driven a vehicle that vibrated and shook like this before. I did the same test with other vehicles and yes, you feel bumps in the road, but the steadily increasing vibration and buffeting sensation, no. I drive on mainly smooth roads but I can only imagine the frustration by those with this issue AND with a long gravel driveway or daily drives on less than perfect pavement.

I ended up cutting my losses and trading out of this vehicle so as not to deal with the headaches, literally and figuratively. I wish you all the best and hope GM can come up with a fix as the new Suburban/Yukon/Escalade is a fantastic vehicle otherwise.

Anon2015 · January 7, 2015

The GM Engineer was making up answers and should perhaps find a career writing children's books.

Wrench589 · January 10, 2015

Ateam_burb, I must admit that I also feel that the suspension/chassis/body is playing a role in this somehow. The vehicle has a "stiffness" about it that seems unforgiving in response to any bumps, large or small. And anything repeated, as you've pointed out, seems to result in a resonant condition. The observations when pulling the fuses are certainly up for debate - if the test drive happened to be over smoother road, one could get different results and think it was the ANC. Or, the ANC could be contributing. The problem is, there are almost endless variables when driving in the real world, and it is almost impossible to control all the variables and truly scientifically test this thing in real world driving. And, there is only so much us owners can do. I certainly can't afford to try a different set of shocks, or wheels and tires, or different spring rates. Or, put the vehicle on a shaker table and measure the natural frequencies of the vehicle. All stuff GM should have done during development, and certainly needs to consider doing as part of solving this.

I must say, I am not sure about what is going on with this thing.

TOBTEK · January 10, 2015

The big question is... What would be the next best step to take to have GM consider the ANC system for a fix??? The GM reps say they monitor this thread, but seem to have fallen silent

TOBTEK -- I'm anxious to hear if you were able to stop the dealer from distorting your Escalade -- and were you abe to speak to your local field engineer???

TOBTEK · January 10, 2015

Very frustrating. The only thing they are willing to try to correct this is remove the headliner. I'm Not on board to rip apart this vehicle with apx 400 miles on it knowing the previous attempts have been completely unsuccessful. A dealership employee yesterday had the nerve to say the GM field Engineer drove our Rolling Subwoofer yesterday and it's not nearly as bad as others out there. So there's a problem, but not very bad? So that's acceptable on a 85,000.00 vehicle. REALLY? And Mr Field Engineer your opinion is purely subjective! Just because it isn't bad to you doesn't mean it isn't bad to another. Trying buying one of these POS's and tell me that. Then buy yet another and let me know your feelings on all this.

This entire process has been terrible. I think we all need to get together and contact the media. I'm sure a Dateline 20/20 or other news program that isn't owned or controlled by General Motors would be very interested in these events. My two little girls (7 and 10 ) said the first time in the new Escalade " this one hurts my head also" completely unprompted.

Ironically I'm still driving the Yukon for the buy back team is still processing their paperwork. After driving the loaner 2015 Tahoe, it's funny how bad it is. Even worse then our Yukon.

GM has a real mess on their hands here!

Txsweettea3 · January 10, 2015

@Tobtek- you posted: "I think we all need to get together and contact the media. I'm sure a Dateline 20/20 or other news program that isn't owned or controlled by General Motors would be very interested in these events."

I would LOVE to see this exposed nationally through the media so that GM would HAVE to acknowledge this instead of mass producing and selling to the unknowing.I've been following this post since the beginning, I came to it questioning the same issues for about 5 months, while test driving and couldn't find a single one without the issue. (I did however notice 1 Suburban LS didn't have the issue. No Bose system!) Only difference between us, I decided and gave up on the purchase. So thankful now.. Only yet to find anything to compare..

I've stated before, we are very friendly with a local dealership and a long time veteran salesman is clueless. He has requested the link to this forum. This is the craziest issue and the sale of these vehicles needs to be stopped until fixed. Its easier to give grace to mistakes, but hard to do when it's purposely ignored. Truly hope the victims are get vehicles replaced.

20Sierra14 · January 10, 2015

Very frustrating. The only thing they are willing to try to correct this is remove the headliner. I'm Not on board to rip apart this vehicle with apx 400 miles on it knowing the previous attempts have been completely unsuccessful. A dealership employee yesterday had the nerve to say the GM field Engineer drove our Rolling Subwoofer yesterday and it's not nearly as bad as others out there. So there's a problem, but not very bad? So that's acceptable on a 85,000.00 vehicle. REALLY? And Mr Field Engineer your opinion is purely subjective! Just because it isn't bad to you doesn't mean it isn't bad to another. Trying buying one of these POS's and tell me that. Then buy yet another and let me know your feelings on all this.

This entire process has been terrible. I think we all need to get together and contact the media. I'm sure a Dateline 20/20 or other news program that isn't owned or controlled by General Motors would be very interested in these events. My two little girls (7 and 10 ) said the first time in the new Escalade " this one hurts my head also" completely unprompted.

Ironically I'm still driving the Yukon for the buy back team is still processing their paperwork. After driving the loaner 2015 Tahoe, it's funny how bad it is. Even worse then our Yukon.

GM has a real mess on their hands here!

Isn't GM buying back your Yukon that had the roof fixed?? And now they're only wanting to do the SAME THING to your Escalade?? These "engineers" are a big joke! I agree, what may seem fine for them, apparently is effecting others, but they're just ignoring it!

I'd be more than willing to go to the media as well!

GM CUSTOMER CARE -- YOU READING THIS???

PokerMunkee · January 10, 2015

Someone needs to contact Jalopnik and I bet they will run with it. Once they publish the story, GM will see it and have to respond.

Edited January 10, 2015 by PokerMunkee

20Sierra14 · January 11, 2015

Very frustrating. The only thing they are willing to try to correct this is remove the headliner. I'm Not on board to rip apart this vehicle with apx 400 miles on it knowing the previous attempts have been completely unsuccessful. A dealership employee yesterday had the nerve to say the GM field Engineer drove our Rolling Subwoofer yesterday and it's not nearly as bad as others out there. So there's a problem, but not very bad? So that's acceptable on a 85,000.00 vehicle. REALLY? And Mr Field Engineer your opinion is purely subjective! Just because it isn't bad to you doesn't mean it isn't bad to another. Trying buying one of these POS's and tell me that. Then buy yet another and let me know your feelings on all this.

This entire process has been terrible. I think we all need to get together and contact the media. I'm sure a Dateline 20/20 or other news program that isn't owned or controlled by General Motors would be very interested in these events. My two little girls (7 and 10 ) said the first time in the new Escalade " this one hurts my head also" completely unprompted.

Ironically I'm still driving the Yukon for the buy back team is still processing their paperwork. After driving the loaner 2015 Tahoe, it's funny how bad it is. Even worse then our Yukon.

GM has a real mess on their hands here!

Also, I forgot to mention earlier. As dumb as it sounds, try the cotton ball trick on your Escalade.. I really would like to know if it'll help you. It took me 10mins and ever since, it has completely cured the pressure/headaches for me.

Pop the grilles off the the mics, rip apart a cotton ball and stuff it in the "O" ring foam (once you remove the grille, you'll see it), place two more whole cotton balls around the whole exposed area the grille was covering (just for extra dampening) and then use 3 strips of masking tape the hold them in place!

I swear, I haven't had any pressure issues since! I can even hear more engine and road noise than I did before, but I don't care.. I even prefer to hear a little more engine grunt

dfounded · January 11, 2015

I also would join in a media attempt to try and get GM to ackkowledge and take this issue seriously

Wrench589 · January 11, 2015

Tobtek, if the dealer does end up taking out the headliner, I would insist on being able to take it for a test drive with the headliner removed. I have a suspicion that the headliner may be playing a role in this whole mess. If you don't believe me, do the following test. Sit in the third row, with the vehicle off and in a very quiet environment. Give the headliner a good solid thump with the heel of your hand, adjacent to the rear DVD player screen. Listen carefully for the thump, then the ensuing "thump, thump, thumps" that follow, which have the exact same pitch as what I'm hearing when driving.

Some kind of natural frequency in the roof/headliner, perhaps? GM, are you reading this?

Try it. Let me know what you hear.

Wrench589 · January 11, 2015

Oh, one question. Where exactly is the subwoofer in this vehicle? I had a look and can't locate it. I would like to try a test and just disconnect the subwoofer, as it would be the only speaker driver capable of producing such low frequency sound that has enough amplitude to literally "feel" in my ears. I doubt the other speakers have the frequency range to do so.

HappyDood · January 12, 2015

Wow!! I cancelled my order. I got three other guys to cancel their orders. One went with a Ford but yet he will be able to drive a few hours without any buffeting issues that can literally drive a sane man crazy.

GM has really dropped the ball.

They don't need to fire any R&D people because WE ARE THEIR R&D people.

GM's spokesperson here dodged every opportunity to clear up any questions in this thread.

Furthermore, that same spokesperson had said several times "we monitor this thread every day", yet they didn't answer any questions when they were being directly asked. Their response was "sorry we didn't see your messages".

They must think we are a bunch of idiots.

I think just for the good of mankind, I will hang out at the dealership on Sundays instead of going to church just to try and save someone (or many people) the misery that GM put so many of you new 2015 owners. They should be ashamed of themselves.

Ok that's all for now. But, just for now. [emoji16]

Sent from my iPhone using Tapatalk

Anon2015 · January 12, 2015

Oh, one question. Where exactly is the subwoofer in this vehicle? I had a look and can't locate it. I would like to try a test and just disconnect the subwoofer, as it would be the only speaker driver capable of producing such low frequency sound that has enough amplitude to literally "feel" in my ears. I doubt the other speakers have the frequency range to do so.

There are two! The wiring schematic lists a Left/Rear subwoofer and a Right subwoofer. The schematic, of course, would not indicate which one, or both, of the two are used for ANC. However, two subwoofers in a common space behave in some interesting ways when they carry the same signal.

The amplifier is located behind the jack in the rear of the vehicle. There is an 8 pin connector (T3 X1). Pin 1 (BU/GY) is identified as the Left/Rear Subwoofer. Pin 5 (GY/BK) is the right subwoofer. (The schematic was posted on the TY forum.) Obviously if only one subwoofer performs ANC functions, disconnecting that will leave you with Bass for the radio.