2015 YUKON NOISE IN CABIN

20Sierra14 · December 8, 2014

Update:

***Pressure sensation is practically GONE!!!***

OK, hear me out. I've been determined to crack this thing... I did what I mention in my last couple posts about pulling the amp fuse (Fuse 48 on the front passenger fuse box), driving the truck for about 15mins, re-installing the fuse and riding w/ the windows down/open sunroof for another 15mins -- all in hopes of "resetting the atmosphere" inside the cabin of the Yukon.

It has been about a week since I've taken our Denali for a ride (wife drives it all week, no time for me to experiment). I finally was able to take the truck out for some Christmas shopping -- all the while, focusing on if I had the pressure in my ears that I was experiencing. I sh*t you not, it was NOTHING like what I was feeling before... I'm still noticing a little hint of rumble in my ears, but the pressure is practically gone! I no longer feel the sense of something not being right inside the cabin. It's actually comfortable and enjoyable to ride in. I'm actually loving the thing - when before, it was pissing me off w/ the uncomfortable pressure.

I would really like to have anyone who is having the "pressure" sensation in their Yukon to try the steps I've mentioned! It could really help, especially if it's the Bose noise canceling system creating the pressure like I was guessing... (??)

I realize it seems crazy, as doing those steps really shouldn't change much (to my basic knowledge), but I do know the truck has completely changed the way it feels while riding.

I just need someone else to do the same

Edited December 8, 2014 by 20Sierra14

20Sierra14 · December 8, 2014

Wow. I can't believe this is really an issue. My wife and I bought a 2015 Yukon XL Denali at the end of October. We actually ordered it in June. We were getting annoyed it took so long to come in. Now, I wish it never came in. Anyway, after about a month of driving it, I decided that yes, there definitely was some kind of "buffeting" noise. And yes, I too think it sound like when a rear window is open. So, I mentioned it to my wife and she said she noticed it the day we brought it home (my god, why didn't she say something. I would have drove it right back to the dealership!). Anyway, that eliminates something that degraded in the month we've had it.

OK, here are some things I've observed and am thinking:

- so, I also notice a "buffeting" noise. I can feel the pressure on my ears and hear the "whomping". Like a sub-woofer gone mad. (Side note: does anyone feel the sub-woofer actually works? Seems almost none existent to me. Where is it even located?)

- it is very annoying to me. No headache, but longest trip I've taken it on is about 20 minutes to run errands. It does annoy me and is extremely tiring on the ears. I can't imagine taking it on a 3 hour road trip. Would be torture.

- my wife definitely notices it but only at higher speeds.

- I notice it starting at very low speed, something like 20 or 30 km/hr (ya, I'm from Canada). I really notice it when slowing down. Seems to stop at about 20 km/hr.

- in fact, it stops so dramatically, it's almost like a switch being turned off. Which initially made me think it was something to do with the electronic shocks (magnetic ride blah blah blah), or the noise cancelling. I wouldn't be surprised that both of those are speed activated and turn off and very low speed.

- as a test, I removed the fuse from the "real time suspension" system which I assume is the electronic shock damping, and to be honest, it seemed slightly better. Less pronounced at lower speeds, but still there. About the same at highway speeds.

- I am going to try to pull the fuse for the sound system to see if defeated the noise cancellation does anything.

- but, now I'm reading this thread and seeing all the discussion about the roof and the not being connected to the cross members. Really GM? Are you kidding? What a pile of junk. Even if it is not the cause of this noise, how can they put out such a POS? But it did make me think. When I picked up the vehicle on delivery day, I happens to notice 4 "dimples" on the roof, evenly spaced out. Now, the these are not easily noticeable. The only reason I saw them is that the dealership's delivery stall is a one level below the showroom and I could stand and look at the new, shines roof. I pointed it out to the dealership and they checked and all the ones on the lot were the same. Now, is it related? Can't say for sure.

- so, I guess the next step is to contact the dealership and start the whole fricken process. I can't believe I'm going to have to go through the pain and agony of trying to get this sorted out on an $84,000 vehicle. Man, Obama should have just let GM die the death they deserved to die!

Well, we'll see what happens. What a pain.

Please, please try what I've suggested. You seem very capable and I would like to know I'm not completely crazy

austingta · December 8, 2014

Weird. I rented a 2015 Yukon XL while my truck (in my signature) was in the body shop after a fender-bender. I had it for two weeks.

It had 15000 miles on it, so it must have been a fairly early build.

It did not have this issue at all.

Weird.

Edited December 8, 2014 by austingta

Wrench589 · December 8, 2014

Hey 20Sierra14,

Man, I was going to pull the fuse for the audio system tonight and go for a drive but decided to take it easy! Rats. Now I really wish I had. Will do ASAP, but like yourself, my wife drives it every day shuttling our kids around (that's why we got the thing!!). Anyway, I will try to give it a go tomorrow after work and report back. Stay tuned!

Edited December 8, 2014 by Wrench589

Wrench589 · December 8, 2014

Hey Austingta,

Question for you. Was your rental a Denali or SLT? If this issue is the noise cancelling, I'm pretty sure the SLT doesn't have it, which would explain why you didn't notice it. Now I seem to recall at least one person on this tread who has observed this noise saying they have an SLT, so that would shoot my theory. But, worth asking.

austingta · December 8, 2014

Hey Austingta,

Question for you. Was your rental a Denali or SLT? If this issue is the noise cancelling, I'm pretty sure the SLT doesn't have it, which would explain why you didn't notice it. Now I seem to recall at least one person on this tread who has observed this noise saying they have an SLT, so that would shoot my theory. But, worth asking.

SLT, 5.3, with sunroof

spacetiger · December 8, 2014

Update:

***Pressure sensation is practically GONE!!!***

OK, hear me out. I've been determined to crack this thing... I did what I mention in my last couple posts about pulling the amp fuse (Fuse 48 on the front passenger fuse box), driving the truck for about 15mins, re-installing the fuse and riding w/ the windows down/open sunroof for another 15mins -- all in hopes of "resetting the atmosphere" inside the cabin of the Yukon.

It has been about a week since I've taken our Denali for a ride ...

I haven't confirmed if the SLT has the same noise cancellation as the Denali. Do you know? I did read something about a specially valves exhaust to reduce noise on both. This sounded suspect. Edited December 8, 2014 by spacetiger

jasondenali15 · December 8, 2014

You guys are freaking me out! As you know, I got my money back on the first Denali due to the pressure. I was dizzy and had brutal headaches everyday. It sounded like GMC may have fixed it after the took many back from Prairie, TX and back to Arlington for some reason. So, I decided to try again and my new Denali is on its way as I type. I thought the 2015i had this fixed...

20Sierra14 · December 8, 2014

I haven't confirmed if the SLT has the same noise cancellation as the Denali. Do you know? I did read something about a specially valves exhaust to reduce noise on both. This sounded suspect.

From my knowledge, I believe GM uses Noise Canceling of some sort in their full size SUVs. It may not have the exact name as the "active noise cancelation" that comes w/ the 6.2's, but I *think* they use the sound system to kill the road noise... Or heck, it could be that these things are sealed up so well, you may just be able to open and close all the windows/sunroof to essentially break the seal

spacetiger · December 9, 2014

Well I drove another SLT tonight that seems to be the best one yet. I think I'm going to buy it. I played with the rear hatch bumpers half way out to create softer seal against between the door and body. That seemed to help a small bit. I will try full out tomorrow when I take the wife back to drive it. BTW I did go to the doc yesterday and found that I already had a ton of fluid on my inner ears due to a virus. That will make me more sensitive to it than others (same reason they tell you not to fly with a head cold).

The v4 mode change wasn't as prevalent in this one compared to the others. If we buy it I'll try the fuse pull and see if it works on an SLT. For now the pressure that I do feel isn't uncomfortable or making my head explode like the first one I drove.

TOBTEK · December 9, 2014

We have the 5.3 SLT. WITH pressure issue. Not isolated to the LTZ's, Denalli's, and Escalades.

I was invited down to our dealer a few days back to drive a new 2015.5 Denalli. Had it sitting there waiting for me. UNFORTUNATELY it's a little better then our SLT but not better enough to buy yet another SUV. Went and tried a 2015.5 Escalade as well. Same thing. The salesman picked up on the issue as well. It's such a let down, I'm ready to switch out for a new Escalade for they are so incredible inside. But can't with this issue not yet corrected.

GM has agreed to either switch ours for a new unit, or give a 100% refund. Hate to say it, but as much as we love this new SUV, I'm leaning towards the refund and finding something else till they get this under control. ???

Edited December 9, 2014 by TOBTEK

The Zip · December 9, 2014

tobtek - talk to the folks that have experienced this issue or are currently experiencing the issue and a refund will be a no brainer

Anon2015 · December 9, 2014

You guys are freaking me out! As you know, I got my money back on the first Denali due to the pressure. I was dizzy and had brutal headaches everyday. It sounded like GMC may have fixed it after the took many back from Prairie, TX and back to Arlington for some reason. So, I decided to try again and my new Denali is on its way as I type. I thought the 2015i had this fixed...

Jason ... I can understand your concern. OTOH, I have had two 15 Denali's (2015 and 2015i) so far and neither of them have had the problem you're referring to. Yes Bose is doing a seriously crummy job over driving the bass in some music selections; but, the buffeting issue hasn't come my way (yet). [both have had 20" Continental tires ... I want the deeper sidewalls and soon, bead locks. The 2015 came with 22" wheels...the ride was stiff but no buffeting whilst the 22's were on the truck.]

jasondenali15 · December 9, 2014

I hope so...my first had 22's and the second one has different 22's from my first order. Thankfully, I am not a serious drinker...

spacetiger · December 10, 2014

While waiting on my new SLT to be prepped, they gave me a Sierra Denali to drive. It's a 15 model and I think they wanted me to trade my tundra. Not going to happen.

Wow.. The pressure and buffetting was tremendous. My head was about to explode after 10 mins of driving. Had to drive with windows down just to stand it. After 4 hours I was still hurting with ear and head aches. What's common? AFM and the noise canceling is all I can figure. As soon as I take delivery of the yukon I am going to try the fuse pull to get rid of the last bit of pressure sensation. It is no where near what I feel in this Sierra. Craziness. I'm also going to talk to service tech to see if they can turn it off in the ECU diagnostics tool. Anyone checked on this?

Edited December 10, 2014 by spacetiger