2015 YUKON NOISE IN CABIN

Willyspu · April 11, 2016

lowered a few of these rigs so far including my 2016 escalade. my customers said it help a lot with vibration. I have a feeling the stock stance of these suvs causes air turbulance around vehicles at stock ride height which is amplified inside.

my escalade

WWW.ESKYOWNERS.COM

That might work where you live but the first rain rutted gravel hill dirt road you drive on or snow/ice covered back road, that low rider will be begging for AAA to tow it back to the asphalt where it came from. No disrespect intended but that is a very limited use garage queen now.

NORCAL SS · April 11, 2016

That might work where you live but the first rain rutted gravel hill dirt road you drive on or snow/ice covered back road, that low rider will be begging for AAA to tow it back to the asphalt where it came from. No disrespect intended but that is a very limited use garage queen now.

not true. Many of my 15 up customers go with my 2/3-4 drop kit and no issues going from northern california ie bay area to lake tahoe which is 220 miles. Snow up there has not been a issue also. I also am doing the road racing event for the good guys coming up in my escalade. Thing corners like on rails now. OH also the 26 inch rims/tires are lighter than stock

26s 88.6 pounds

here is the oem 22s with tires 90.6 pounds

5 user(s) are reading this topic

here is the 2/3-4 kit which has more than enough level for snow. best of all handles and rides better then stock. GM needs to address the height issue.. but by doing that lots of people will have trucks that will need to be at least 1.5 inches lower in front and 3 in rear

Wrench589 · April 11, 2016

no they do not the vibration is almost gone. One even went to the dealer and they confirmed it with the tool they put inside the truck and stewart chevrolet sent this into gm since gm wanted to see readings. The rear of these trucks sit much higher then previous generations. Also gm lengthened the rear lower control arms so there are difference. I lowered a lot of these trucks current and previous generation. Some customers say they have no vibration while others notice it and after lowering they said the noise pressure is gone while the vibration is barly noticeable its actually pretty drastic. My truck is slammed to the fullest and I have NO vibration at all. The trucks where they siad its almost gone are only at the 4.5 option of my drop kit so me being 1.5 lower just tells me its a airflow turbulence issue. The truck handle SO MUCH better also when lowered its just a win situation. Mine is a 3/6 drop

also on my truck i did front/rear swaybars along with shorter endlinks both front and rear MAJORRRR difference. Now we know gm wont lower these rigs but so far ALL THE THINGS THEY HAVE TRIED failed and I feel the design these trucks have is the killer. Well at least those customers that lower them will be happy

stock front links vs the new ones i install in customers trucks. Swaybar angle fixed and better cornering since bar is no parallel with ground

Very fascinating. I don't doubt you that the lowered vehicles have less vibration, although I am surprised. That said, I personally don't find vibration a major concern with my Yukon. It's certainly worse than most vehicles, including my F-350 one ton! But, the big issue is the noises. The boominess at lower speeds, and the "buffeting" at higher speeds. So the question is, did any of the vehicles you lowered have the booming and buffeting before lowering, and were they gone after?

I don't think any of the issues most of us are experiencing with these SUVs is aerodynamic. Maybe the buffeting at higher speed. But for sure the low speed boominess is mechanical in nature. At 20 kph, there is virtually no aerodynamics at play, so the harshness is mechanical. I would love to ride in your lowered version and compare that lower speed ride to mine. Mine is much better withe the 20" winter tires compared to the 22" factory, by the way. But still pretty noisy for example,min a parking lot over the gravel left over from winter, it's pretty noisy. Only on glass-like pavement is it reasonable with the 22"s on. And no, it's not in my head! I can drive one of my other two vehicle and they are very quiet and smooth. The Yukon is definitely noisier.

I'm also curious to know the extent of the parts changed with the lowering. Bushings? Links? It's amazing that you put such uber-low profile tires on and the vibration goes down. Completely opposite to what most folks are saying about tire profile. Most see improvement with higher profile tires. Although, myself I found all the rentals I had aboutbthensame, regardless of 18", 20" and 22".

Edited April 11, 2016 by Wrench589

NORCAL SS · April 11, 2016

no they do not the vibration is almost gone. One even went to the dealer and they confirmed it with the tool they put inside the truck and stewart chevrolet sent this into gm since gm wanted to see readings. The rear of these trucks sit much higher then previous generations. Also gm lengthened the rear lower control arms so there are difference. I lowered a lot of these trucks current and previous generation. Some customers say they have no vibration while others notice it and after lowering they said the noise pressure is gone while the vibration is barly noticeable its actually pretty drastic. My truck is slammed to the fullest and I have NO vibration at all. The trucks where they siad its almost gone are only at the 4.5 option of my drop kit so me being 1.5 lower just tells me its a airflow turbulence issue. The truck handle SO MUCH better also when lowered its just a win situation. Mine is a 3/6 drop

also on my truck i did front/rear swaybars along with shorter endlinks both front and rear MAJORRRR difference. Now we know gm wont lower these rigs but so far ALL THE THINGS THEY HAVE TRIED failed and I feel the design these trucks have is the killer. Well at least those customers that lower them will be happy

stock front links vs the new ones i install in customers trucks. Swaybar angle fixed and better cornering since bar is no parallel with ground

Very fascinating. I don't doubt you that the lowered vehicles have less vibration, although I am surprised. That said, I personally don't find vibration a major concern with my Yukon. It's certainly worse than most vehicles, including my F-350 one ton! But, the big issue is the noises. The boominess at lower speeds, and the "buffeting" at higher speeds. So the question is, did any of the vehicles you lowered have the booming and buffeting before lowering, and were they gone after?

I'm also curious to know the extent of the parts changed with the lowering. Bushings? Links? It's amazing that you put such uber-low profile tires on and the vibration goes down. Completely opposite to what most folks are saying about tire profile. Most see improvement with higher profile tires. Although, myself I found all the rentals I had aboutbthensame, regardless of 18", 20" and 22".

oh yah rear swaybar upgrade/endlinks and greaseable bushings

stock bar left vs bigger bar right

just like the other 07-14 with autoride if you go onto tahoeyukonforum people running my custom kits agree rides better then oem. I will keep everyone updated as I go on and do more trucks.

POTHOLES like crazy in san francisco I have no issues driving mine on 26s. If you want a tire with more sidewall you can do a 24x10 with 30mm offset and a 305 35 24.

16Denaliguy · April 11, 2016

Pick up trucks are experiencing some of the same issues:

http://www.autoguide.com/auto-news/2016/03/the-mysterious-chevy-shake-is-affecting-pickup-trucks-now-too.html

Wrench589 · April 11, 2016

Pick up trucks are experiencing some of the same issues:

http://www.autoguide.com/auto-news/2016/03/the-mysterious-chevy-shake-is-affecting-pickup-trucks-now-too.html

Yea, I realize the pickups have issues too. But from what I've read on the pickup forum, it's all vibration; no one has reported buffeting or booming sounds.

boazEarl8 · April 12, 2016

not true. Many of my 15 up customers go with my 2/3-4 drop kit and no issues going from northern california ie bay area to lake tahoe which is 220 miles. Snow up there has not been a issue also. I also am doing the road racing event for the good guys coming up in my escalade. Thing corners like on rails now. OH also the 26 inch rims/tires are lighter than stock

I know you're a (proud) vendor but statements like this can highlight your objectivity

I live in SF, not valid that a dropped SUV on 26s can make it *safely* to Tahoe during real snow unless you're creeping along at 10mph

A light dusting at lower elevations maybe but that usually means there is 4-12 inches on the roads closer to Tahoe, which would be havoc on a vehicle with no road clearance, and we're not even mentioning you'll have almost no grip on non-winter tires plus no room for chains when required

If the CHP doesn't turn you around, you'll get turned around on your own

Edited April 12, 2016 by boazEarl8

NORCAL SS · April 12, 2016

Never have had any of my customers have issues wuth 4wd on my 2/3-4 kit going to tahoe

Leveled another 15 tahoe today. Vibration she stated is gone. Progressive rate springs are working.

64 year old lady also happy she can get in easier.

Another tahoe travelers truck I did. Nnbs but same deal no probs going to tahoe.

http://www.tahoeyukonforum.com/threads/come-along-with-norcal-ss-on-a-lowering-escapade-on-a-2011-tahoe.73989/

Edited April 12, 2016 by NORCAL SS

Wrench589 · April 12, 2016

If that should aggravate you, well that's just too bad.

Having a little trouble with your memory, are you? Your words, not mine. Check you own posts.

And really, referring to me being in Canada? That's the best you got? LMAO at how silly that is. Ohhhh, maybe you're going to build a wall here now! LOL!

Snoringbear · April 12, 2016

I hope when im as "old" as you I have better things to do then what your doing

Ah NORCAL, The trick is to first become old. Then you can focus on all the exotic things you're going to do, heh, heh! No easy feat. Sometimes, between posting on this forum and watching Man vs Food reruns I reflect on how is it possible that I'm still here! Lots of luck and the good Lords guiding hand for sure!

Btw, noticed that you have a 2011 Avalanche? How do you like it? When the Avalanche first came out I came within an inch of buying one instead of a truck. How does it ride, more like a Suburban or more like a truck?

Well, take care of yourself and keep working on your old age. You'll be amazed by how fast you get there

NORCAL SS · April 12, 2016

No I have a 2011 escalade and 2016 escalade..... and 2016 z06 and 2013 ctsv and 96 impala ss with 33k miles. I love my gm vehicles

Edited April 12, 2016 by NORCAL SS

the blur · April 12, 2016

No I have a 2011 escalade and 2016 escalade..... and 2016 z06 and 2013 ctsv and 96 impala ss with 33k miles. I love my gm vehicles

I have the exact same collection, minus the 2016 vehicles.

Wrench589 · April 12, 2016

Never have had any of my customers have issues wuth 4wd on my 2/3-4 kit going to tahoe

Leveled another 15 tahoe today. Vibration she stated is gone. Progressive rate springs are working.

64 year old lady also happy she can get in easier.

Another tahoe travelers truck I did. Nnbs but same deal no probs going to tahoe.

http://www.tahoeyukonforum.com/threads/come-along-with-norcal-ss-on-a-lowering-escapade-on-a-2011-tahoe.73989/

So, are the factory springs constant rate? Thinking about it, a progressive rate should provide a much smoother ride than a fixed rate, shouldn't it. Maybe that accounts for the "harshness" of the ride. My dealer did the shock/strut upgrade but I think all that changed was the shocks, not the springs. Not sure, though. In my case, it made the vehicle less stable and it seems to "wallow" a bit more over dips and around corners, but the harshness over small bumps, gravel, etc is about the same. Maybe different springs are in order??

NORCAL SS · April 13, 2016

yes factory is a linear spring. here is another truck i just finished up. leveled rear ride/cornering much better.

Wrench589 · April 14, 2016

yes factory is a linear spring. here is another truck i just finished up. leveled rear ride/cornering much better.

So, any chance progressive springs for stock ride height are available? I'm not too keen on lowering the vehicle at all, although lowering the rear to level somewhat wouldn't be the worst thing in the world. It does sit abit high in the rear.