2015 YUKON NOISE IN CABIN

Ozzii · January 25, 2016

With My 2016 Lt I don't have and vibrations of wind noises at high speeds just pressure in my ears as the speeds increase. , I get the booming sounds when going over bumps and uneven pavement at speeds between 5mph and 50 mph.. I also have booming and drone/ Ear pressure when the vehicle is in v4 mode. i ended up driving to the gas station earlier in Manual M5 and had no drone and it reduced the booming by about 70% I wish Gm could figure this out. Im still in the process with Gm trying to trade it in for a different one.

Edited January 25, 2016 by Ozzii

Zig10 · January 25, 2016

With My 2016 Lt I don't have and vibrations of wind noises at high speeds just pressure in my ears as the speeds increase. , I get the booming sounds when going over bumps and uneven pavement at speeds between 5mph and 50 mph.. I also have booming and drone/ Ear pressure when the vehicle is in v4 mode. i ended up driving to the gas station earlier in Manual M5 and had no drone and it reduced the booming by about 70% I wish Gm could figure this out. Im still in the process with Gm trying to trade it in for a different one.

If it is the V4 mode that is causing the major issues on yours, have you ever considered testing the Range AFM defeat module? I ran one on my old Tahoe for over 3 years without issue, but that was because of the dreaded piston-slap problem that would develop on the older 5.3s. Might be worth a shot.

https://www.rangetechnology.com/pages/v8

Wrench589 · January 25, 2016

They definitely not the same thing. Completely different frequencies.

Sent from my SM-N910V using Tapatalk

Have you taken measurements? What frequencies did you measure?

BenYukon · January 25, 2016

Has this problem resolved by GM for 2016 ? Is limited to XL models or are all versions affected ?

I really like the Yukon and I am still planning to buy one since there is very little alternatives, but this thread make me think it might be better to delay

until the 2017 come out and there is a fix.

yahtzee · January 25, 2016

Has this problem resolved by GM for 2016 ? Is limited to XL models or are all versions affected ?

I really like the Yukon and I am still planning to buy one since there is very little alternatives, but this thread make me think it might be better to delay

until the 2017 come out and there is a fix.

No. It still exists in model year 2016's.

BenYukon · January 25, 2016

Thanks for the reply ! I will lean back and let GM fix that first.

Cl Houn · January 25, 2016

Has anyone read of this before?

http://gm.oemdtc.com/2641/buffeting-vibration-drone-type-noise-exhaust-tone-change-body-pressure-booming-2015-cadillac-chevrolet-gmc

AFM, exhaust and ANC? Didn't some of us already go down this road? Why are the 6.2Ls called out?

Has anyone done this yet

Cl Houn · January 25, 2016

Any report back of the survey yet

Wrench589 · January 26, 2016

Has anyone done this yet

I've done 2 out of the 3. I remov d the fuse from the audio amp, and it made no difference to the buffeting and drone. So, rule out ANC.

I also put the transmission in manual and selected 5th gear, and again no improvement.

BenYukon · January 26, 2016

Just curious while looking at the GM sales numbers with 24.000 Tahoe, Yukons, Escalades sold in December 2015, does the buffeting problem happens only to a very small percentage of those trucks or do they all have it more or less ?

Has GM eventually fixed it now since most posts are for 2015 models ?

boazEarl8 · January 27, 2016

Just curious while looking at the GM sales numbers with 24.000 Tahoe, Yukons, Escalades sold in December 2015, does the buffeting problem happens only to a very small percentage of those trucks or do they all have it more or less ?

Has GM eventually fixed it now since most posts are for 2015 models ?

Someone replied to you earlier

It still exists on the 16s

I felt booms and buffets on every one I test drove (>10 all 2016s) and vibrations on maybe half of them

Booms and buffets to different degrees

Edited January 27, 2016 by boazEarl8

FogDucker · January 27, 2016

Any report back of the survey yet

59 responses, 33 of those from SUV owners. See links in signature for details.

ajs800 · January 27, 2016

Nearly a year has past since Wrench asked this, but could we revisit this? Could those with crossbars please report in? Do crossbars, or things attached to them, influence buffeting? Does anyone here use cargo boxes? Is there anyone with crossbars that does not experience buffeting?

My updates: The raised 3rd row seat is one thing that changed with the new K2XX SUVs. I folded a towel lengthwise [4 layers] and placed it in the hatch as shown in the attached picture. The hatch closed snugly but there was no difference in buffeting. Interestingly, I was able to pull the towel out from the inside of the hatch. So, the hatch and the angled shelf are not making contact. They're not even that close!

I also drove down a snow covered street with with the rear glass open and then again with the hatch open. No change to the booming. I was not willing or able to drive it up to the 40mph buffeting sweet spot to see if it changed with either open.

My Yukon has another date with a field engineer on Tuesday and it'll be in the shop for at least 2 days, I'm told. He'll be focusing on the hatch, exhaust [?] and maybe crossbars. [i don't have crossbars, but will need them if I keep the Yukon.]

~2 months until my annual 1,500 mile drive to warm Florida with the brood. I'd like it to be a buffeting free drive!

I have to go revisit, but I could swear that I felt very minimal booming on my test drive (with cross bars attached) and seemed worse after I had them removed prior to delivery since I assumed more turbulent air (driven by cross bars) would make the issue worse

Thank you for driving with the rear open, mine is at the dealer for an unrelated issue

I installed crossbars on our XL SLT in hopes that it would reduce the buffeting and NO such luck. It might have reduced it some but for the most part there has been little change. Dropping down from the 22" denali wheels to 20 and road force balancing has made the most improvement. My plan is to have the roof bows reattached (they are clearly apart as the sheet metal taps against them when hitting from the exterior) and to order a set of michelin tires to replace the oem 20 tires.

Willyspu · January 28, 2016

Nearly a year has past since Wrench asked this, but could we revisit this? Could those with crossbars please report in? Do crossbars, or things attached to them, influence buffeting? Does anyone here use cargo boxes? Is there anyone with crossbars that does not experience buffeting?

My updates: The raised 3rd row seat is one thing that changed with the new K2XX SUVs. I folded a towel lengthwise [4 layers] and placed it in the hatch as shown in the attached picture. The hatch closed snugly but there was no difference in buffeting. Interestingly, I was able to pull the towel out from the inside of the hatch. So, the hatch and the angled shelf are not making contact. They're not even that close!

I also drove down a snow covered street with with the rear glass open and then again with the hatch open. No change to the booming. I was not willing or able to drive it up to the 40mph buffeting sweet spot to see if it changed with either open.

My Yukon has another date with a field engineer on Tuesday and it'll be in the shop for at least 2 days, I'm told. He'll be focusing on the hatch, exhaust [?] and maybe crossbars. [i don't have crossbars, but will need them if I keep the Yukon.]

~2 months until my annual 1,500 mile drive to warm Florida with the brood. I'd like it to be a buffeting free drive!

2016 Suburban LT Cross Bars, 2nd row buckets, 18" wheels 3700 miles (CA city and highways, Oregon gravel roads and snow)

I supposed I am one of the few on the list with no vibrations or buffeting but I do get the 4v noise.

I have hauled 4 6-8' Christmas trees on the roof 600 miles and the net result was about 3 mpg less than without the trees.

Just for the hell of it, you guys might ask the dealers to let you try out a set of 18" wheels. I went with these because our ranch in Oregon has a lot of gravel and dirt roads and I know that the low profile 20 & 22's would be beat up in this environment. The 18" wheels have a higher profile tire that absorbs a bit more road imperfections and might have an impact on NVH (noise, vibration and harshness) although the Goodyear Assurance Fuel max tires are not my favorite.

Jim

Snoringbear · January 28, 2016

I drive a truck, 2015 LTZ CC. BUT, I find this thread interesting. The discussion about the buffeting reminds me of back when I had a Jeep Wrangler. In the summer I would remove the hard top and strap on a bikini top (on the jeep, not on me ). Anyway, the severity of buffeting from the canvas was highly dependent upon speed being driven and strength and direction of prevailing winds. If driving with the wind there would be very little buffeting. Into the wind or even a quartering wind coming across either front side of the jeep was worse. I couldn't drive very ling at highway speeds, would drive me nuts. Anyway, I'm guessing the problem has something to do with the long span of roof sheet metal. I believe I have seen it mentioned that the new GM suv's and trucks use thinner gauge sheetmetal than previously to save weight? I think that's your problem.