2015 YUKON NOISE IN CABIN

dbdave · November 19, 2016

Don't need to, 'cause if the article is about fullsize GM SUVs buffeting from the side view mirror design, it's a lie. Or else my truck would be buffeting also.

Maybe reading it would open your eyes a bit to the effects airflow has on a vehicle, which appears to be most of the buffeting in all vehicles.

zfasts03 · November 19, 2016

I am experiencing low speed booming, bumps and rough road noise. Nothing at higher speeds where aerodynamics come into play. So buffeting from mirrors is not my issue.

I am thinking it is the thin sheet metal as well.

I think the (mounting location) trailing arms for the rear axle are introducing a movement or force into the chassis that is transmitted to the body to create the boom.

Maybe trailing arm bushings are doing a poor job of energy absorbing, or the (design) angle they transmit the force to the frame is the source of sound???

The Zip · November 19, 2016

Maybe reading it would open your eyes a bit to the effects airflow has on a vehicle, which appears to be most of the buffeting in all vehicles.

Yes airflow does have an affect on vehicles, but we're not talking about all vehicles here. The style of the sideview mirrors on this truck is not the cause of buffeting. A "large" portion of the buffeting is probably due to thinner metal than previous generations combined with roof bows not being attached correctly. I'm sure another magazine will come out with their version of a silver bullet for buffeting, but a report being specific to the this truck would be more credible.

dbdave · November 19, 2016

Which makes it appear that Gm got both the airflow and the construction materials wrong on this version. I'm thinking it will take a new version of this vehicle to correct the problems, since it doesn't appear there is a reliable fix for any of them.

The Zip · November 19, 2016

I'm thinking it will take a new version of this vehicle to correct the problems ...

No, if GM doesn't figure out the issues with this gen 4, owners will have the same problems in the next gen 5. GM has corporate data, but they need to collect, assess, and compare owner data to decrease or eliminate issues with this truck.

dbdave · November 19, 2016

You left out the rest of my quote which is the most likely scenario. They aren't, at this point, reliably fixing this problem. Maybe because they don't know what's causing it or the fix is just too expensive to do a good-will fix or a recall. The solution will then be left to a new gen design for which they will have budget to design in a fix. Like many other design problems, this one will go away with the age of vehicle, ownership changes to those who don't mind or care about the problem, or the vehicles go out of service due to accidents, etc. Who knows? We'll see. Until then, I won't be buying this version.

Ozzii · November 20, 2016

Ive noticed since the weather is cooling off, the low speed booming has gotten a lot worse ;( I also notice sometimes when I shift the car into reverse or drive, I can also here that boom noise.

Edited November 20, 2016 by Ozzii

ajs800 · November 21, 2016

They made them smaller than they used to be. Maybe folding them in or removing them is the wrong direction to make any difference.

The go pro thing was done by someone already and it moved as was posted way early in this thread.

3 sets of tires and road forced under 15lbs and new ring and pinion cured our buffeting so I know 100% the mirrors have absolutely nothing to do with the buffeting. There are a handful of folks that have fixed(band aid fix) it by going with new tires RF under 15lbs, axles, ring and pinion, etc.

Also, our front rotors even caused buffeting again recently as they were warped and pulstated badly. It has the typical pulsating feeling like every other car when rotors go bad, but it creates the same buffeting throughout the entire cabin almost identical to the buffeting issue. . We've since had new rotors / pads installed.

It's definitely a frame/body issue as slight vibration or rumble that is absorbed by the frame resonates through the body/cabin.

Edited November 21, 2016 by ajs800

Ozzii · November 21, 2016

Although it would be costly, would installing dynamat decrease the booming at low speeds in the cabin? Id be willing to shell out the money if I knew it would work.

yukontruckman · November 21, 2016

In a 2017 Loaner Suburban right now. LS, ~ 3000 miles, 18" Goodyear tires, 8/16 Build. Booms and Buffets like crazy. Worse than my 2015i Tahoe with 20" wheels. I don't believe that GM has fixed this for MY2017.

ajs800 · November 21, 2016

In a 2017 Loaner Suburban right now. LS, ~ 3000 miles, 18" Goodyear tires, 8/16 Build. Booms and Buffets like crazy. Worse than my 2015i Tahoe with 20" wheels. I don't believe that GM has fixed this for MY2017.

Do you have a 15/16 model with the buffeting issue and if so, have you attempted the tire fix and/or any drivetrain fixes?

Leslie Wasson Green · November 21, 2016

Good morning everyone.
I picked up my Yukon on Friday with bad news.
After the last exhaust fix and engine mounts GM has no other fixes currently available.
I will say my truck is somewhat better after everything they have done to it. (you can read my prior posts to see what they have done).
I road with a GM field rep for 15 or so minutes and she heard the buffeting when speeds were maintained and the vehicle was in V4 mode.

However when they road in it again the same day with another field engineer and the PicoScope(measures sound) the PicoScope registered the vehicle within normal range.What I think happened during this test drive is the rep didn't maintain the speed long enough for the machine to register the sound for a long enough time for it to register.
So basically they can't do anything else for me.
They offered to make a car payment for me. While that is a nice gesture, it doesn't fix my Yukon.

******There is a workaround to prevent the noise from happening and it works 100% for the buffeting noise). The booming over bumps is something that won't change and I guess I will have to get used to.

Here is what you can do to band-aid the buffeting issue.........

When you turn your vehicle on. Shit from P or M ( This shifts to manual). Press the "+" button on the gear shift until the info screen reads "M5". If you are planning on going over 60 MPH, place it in "M6". And drive along your merry way(it will shift like normal in the manual mode). This prevents the vehicle from going into the dreaded V4 mode.

Yes I am loosing some MPG, but I have no more buffeting issue.

I am well aware that I should not have to go through all this trouble to drive my $65,000 vehicle, but I am willing to do it for now as I have too much going on in my life to take on the Lemon Law process.
So I guess General Motors beat me down...they won.

Edited November 21, 2016 by Leslie Wasson Green

albader2007 · November 21, 2016

Good morning everyone.

I picked up my Yukon on Friday with bad news.

After the last exhaust fix and engine mounts GM has no other fixes currently available.

I will say my truck is somewhat better after everything they have done to it. (you can read my prior posts to see what they have done).

I road with a GM field rep for 15 or so minutes and she heard the buffeting when speeds were maintained and the vehicle was in V4 mode.

However when they road in it again the same day with another field engineer and the PicoScope(measures sound) the PicoScope registered the vehicle within normal range.What I think happened during this test drive is the rep didn't maintain the speed long enough for the machine to register the sound for a long enough time for it to register.

So basically they can't do anything else for me.

They offered to make a car payment for me. While that is a nice gesture, it doesn't fix my Yukon.

******There is a workaround to prevent the noise from happening and it works 100% for the buffeting noise). The booming over bumps is something that won't change and I guess I will have to get used to.

Here is what you can do to band-aid the buffeting issue.........

When you turn your vehicle on. Shit from P or M ( This shifts to manual). Press the "+" button on the gear shift until the info screen reads "M5". If you are planning on going over 60 MPH, place it in "M6". And drive along your merry way(it will shift like normal in the manual mode). This prevents the vehicle from going into the dreaded V4 mode.

Yes I am loosing some MPG, but I have no more buffeting issue.

I am well aware that I should not have to go through all this trouble to drive my $65,000 vehicle, but I am willing to do it for now as I have too much going on in my life to take on the Lemon Law process.

So I guess General Motors beat me down...they won.

If disabling active fuel management eliminated buffeting , i suggest you to use range technology it's work better than M5.