2015 YUKON NOISE IN CABIN

albader2007 · September 16, 2016

Maybe just maybe we can all be happy with our Yukons again!!!!

I'm glad to have helped!

Did you suffer pressure in your ears before ? I really can't understand how the exhaust and muffler related to this issue !!

In my case i feel excessive pressure effects my ears and sinuses and harmonic noise in my head especially in low speed. Last week i drive for 2 hours over 110 m/s and noticed that no more pressure in that's speed. The buffeting in my tahoe is hardly to hear it between 60 to 70.

Wrench589 · September 16, 2016

Can someone post links to the latest versions of TSB5318 and 5404? I want to print them off and take them to my dealership. I can't them the get off there butt and get the exhaust upgrade going - they ignore my calls completely now! Might have to drive it into the service bay and have a hissy fit! Lol. (I wouldn't do something like that!)

Thanks

Leslie Wasson Green · September 16, 2016

Did you suffer pressure in your ears before ? I really can't understand how the exhaust and muffler related to this issue !!

In my case i feel excessive pressure effects my ears and sinuses and harmonic noise in my head especially in low speed. Last week i drive for 2 hours over 110 m/s and noticed that no more pressure in that's speed. The buffeting in my tahoe is hardly to hear it between 60 to 70.

Yes. I had the buffeting/throbbing/low pressure noise inside my head as soon as I was driving it home from purchase. I notified the dealer as soon as I got home. I heard/felt the pressure at speeds between 30-55, mainly when the vehicle shifted and stayed in V4 mode. This is why I would have bet my first born that it was a transmission/harmonic balance issue.

When they told me they were going to try the 2nd exhaust/muffler, I literally rolled my eyes. I knew it had NOTHING to do with that. But I guess I was wrong. Believe me, I was in complete shock that it fixed the issue.

Leslie Wasson Green · September 16, 2016

Can someone post links to the latest versions of TSB5318 and 5404? I want to print them off and take them to my dealership. I can't them the get off there butt and get the exhaust upgrade going - they ignore my calls completely now! Might have to drive it into the service bay and have a hissy fit! Lol. (I wouldn't do something like that!)

Thanks

I am not sure where to find them...but is was the 5404B service bulletin that finally fixed mine.

SierraMyst · September 17, 2016

Called my dealership and he says the new exhaust in PIT5404 is only for 5.3L engines.

There's no new exhaust for 6.2L.

Sucks.

Edited September 19, 2016 by SierraMyst

[email protected] · September 17, 2016

Traded my 2015 on a 2016 and it sounds perfect. The 2016 is a pleasure to drive unlike the 2015.

wot_denali · September 17, 2016

i tuned my car and cancel v4 v8 mode and installed a custom catback also replaced the tires with another brand,car runs much better than before but still have some vibration spiealy on 60 to 80 mph.

wot_denali · September 17, 2016

The car were manufactured on march 2014

SierraMyst · September 18, 2016

I'd be interested in knowing how many of you having the booming and buffeting are 5.3 or 6.2 since the exhaust is a 5.3 only fix.

[email protected] · September 18, 2016

The bulletin the dealer showed me told the dealer to remove a muffler from another new vehicle on their lot and try it on the 6.2l. If it works order a replacement muffler. The bulletin dealt with both engines.

sssqueue · September 18, 2016

My 2015i Suburban is at the dealer right now addressing multiple issues including this one. I am going to give them the new PIT number and will report back. Thanks for the detail!

SierraMyst · September 19, 2016

The bulletin the dealer showed me told the dealer to remove a muffler from another new vehicle on their lot and try it on the 6.2l. If it works order a replacement muffler. The bulletin dealt with both engines.

If there's anyway you can call your dealer and ask for the PIT number that includes the 6.2L exhaust, it would be greatly appreciated.

My dealer insists that the exhaust fox is only for 5.3s and the Active Noise Cancellation is the issue on the 6.2s.

They've had the truck 28 days now at the dealer ship and are still trying to balance the sake shitty f******** tires.

Edited September 19, 2016 by SierraMyst