2015 YUKON NOISE IN CABIN

cleanfreak · July 6, 2015

***UPDATE***

Well after a week, my vehicle is back at the dealer. Not for the ‘buffeting’ issue per say, but I have a new issue I believe to be caused by an incorrect installation of the rear end from the repair a week ago.

I now have a true vibration resonating from the rear end, to where it can be felt in the steering wheel. The vibration goes in and out, in and out…… ….. ……. count 123,123,123 and it is a constant vibration or “honing”. It can be felt mostly at 53 MPH but I believe is there all the time.

I have requested an entire new rear end be installed as I now do not trust them to repair it correctly and I do not know what other damage it may have caused.

**other issues**

I have a small leak of some type of substance (water like) that is coming from the bottom of the rear view mirror. (see attached pic. white substance is just the camera flash bouncing off of the water on the outside of the window). It has happened before about a month or so ago and I did not think anything about it, but twice now in 3 months and something is definitely not right. Any idea?
I have a rattle (screw tapping sound) coming from the driver side area where the door meets the dash. If you wedge your finger between the door and the dash the noise goes away. Any idea what this can be?
The passenger side seatbelt housing is so loose, it sounds like it is going to fall off any minute. I have wedge a piece of cardboard to stop the noise for now. Any ideas?

I have addressed all the above concerns with my Service Manager. I know I am picky, but I have been patient up until now and I am ready to have this fixed once and for all. For what it’s worth, the rental vehicle I received is a 2015 Tahoe LT. It has none of my issues above, but driving it for about 50 miles, it has plenty of others……..

One last question:

I purchased this vehicle as certified used. Lemon laws in Georgia are only good for new vehicles. What are my chances if this cannot be repaired that I will be able to get another vehicle to replace it? Who do I contact?

Thanks,

cleanfreak

spinningwheel · July 6, 2015

Cleanfreak. I'm on my second Yukon Denali since March 3rd. The first one had all the usual problems, one of them being the rear end. When you say incorrect install of the rear end I suppose you mean the ring and pinion gears. The dealer changed my gears also, it did not fix the vibrating. They then had an entire rear, rotor to rotor from the factory shipped to them and installed it. It did not fix the problem. After two months they bought back that vehicle and they told me to come down and pick out another one. I now have about eight hundred miles on the new one and so far no problems.

I don't know about certified used but you should call GM executive office 855-435-7284 to start a case. You will need your service manager, GM district manager to get involved once you have a case going. Being patient with them helps, even though sometimes that's hard to do.

Did you do a carfax on the vehicle or find out if it was a buyback? Good luck!

cleanfreak · July 6, 2015

Cleanfreak. I'm on my second Yukon Denali since March 3rd. The first one had all the usual problems, one of them being the rear end. When you say incorrect install of the rear end I suppose you mean the ring and pinion gears. The dealer changed my gears also, it did not fix the vibrating. They then had an entire rear, rotor to rotor from the factory shipped to them and installed it. It did not fix the problem. After two months they bought back that vehicle and they told me to come down and pick out another one. I now have about eight hundred miles on the new one and so far no problems.

I don't know about certified used but you should call GM executive office 855-435-7284 to start a case. You will need your service manager, GM district manager to get involved once you have a case going. Being patient with them helps, even though sometimes that's hard to do.

Did you do a carfax on the vehicle or find out if it was a buyback? Good luck!

Thanks for your reply and the info. I will keep it in my back pocket and wait and see if this visit corrects my issue. The buffeting seemed to be fixed until this new issue came about.

I did not check the carfax, but I did have them pull a service record on the vehicle on my last visit. My first visit a few weeks ago is all that showed up except for an oil change and when they did the required inspections to call it "certified".

jasondenali15 · July 6, 2015

Cleanfreak: Thanks for the update! Sorry for your additional troubles with the truck...spending this kind of money we want perfection--and we should continue to demand it. Hope you get these other issues worked out.

Back to the buffeting/pressure for a moment. Can you confirm the pressure sensation was gone at 42-43 mph with the new rear end? I know the truck now vibrates, but is it vibrating completely without the pressure and droning at the troublesome speeds?

I think you are getting very close to a solution. Stay the course. I agree with Spinningwheel too. Keep being nice and patient...that's the only reason I believe they bought both of my lemons back at full purchase price.

cleanfreak · July 6, 2015

Cleanfreak: Thanks for the update! Sorry for your additional troubles with the truck...spending this kind of money we want perfection--and we should continue to demand it. Hope you get these other issues worked out.

Back to the buffeting/pressure for a moment. Can you confirm the pressure sensation was gone at 42-43 mph with the new rear end? I know the truck now vibrates, but is it vibrating completely without the pressure and droning at the troublesome speeds?

I think you are getting very close to a solution. Stay the course. I agree with Spinningwheel too. Keep being nice and patient...that's the only reason I believe they bought both of my lemons back at full purchase price.

Hi Jason-

Yes. I fully believe the 'buffeting' was gone with the new ring and pinion "backlash" repair at 42-43 MPH when I drove it home from the dealership (about 3 miles). The 42-43 MPH was the 'sweet' spot for my issue as well, so I was listening closely and drove this speed all the way home. My wife drives the vehicle more than I do and she told me that the buffeting had returned on Tuesday, 4 days after I picked it up. I was out of town during this time and not able to drive the vehicle until this Friday, when I was off for the 4th of July holiday. This is when I noticed it was a true 'vibration' causing the sound, not "just a sound", and this is what my wife was hearing.

On a side note: The Service Manager from 1100 miles away called me this morning just to follow up and see how my repair went. Needless to say, this guy has gone way above and beyond for a vehicle his dealership did not sell, and he has never personally met me. Talk about customer service! I only wished he was here in South GA.......he now has a nice gift card in the mail

During this call he told me to also be sure, and I quote verbatim, "if the tech found the hour glass wear pattern on the bearings, they should have replaced the axle housing to eliminate this problem coming back."

......Of course I asked this question to my dealership this morning via voice mail and text, still awaiting an answer.....

yukontruckman · July 7, 2015

Clean or Spinning, do either of you have the HD trailer package with the 3.42 rear end? Just wondering if the 3.08/3.42 rear axle makes any difference with regard to the vibration/buffeting issue,

BillyJack · July 7, 2015

Clean or Spinning, do either of you have the HD trailer package with the 3.42 rear end? Just wondering if the 3.08/3.42 rear axle makes any difference with regard to the vibration/buffeting issue,

I have the 3.08 rear and have the buffeting / vibration issue between 42 and 50 mph. It's pulsates similar to what's described above. Dealer wants to pull the headliner and do the bracing fix. I'm just not confident that it's the correct fix yet. Feel like I should be able to strap a spare tire down on it and if it goes away, I know it's the roof bracing and not a rear end issue.

cleanfreak · July 7, 2015

Clean or Spinning, do either of you have the HD trailer package with the 3.42 rear end? Just wondering if the 3.08/3.42 rear axle makes any difference with regard to the vibration/buffeting issue,

I honestly do not know. I will need to look to confirm.

I have the 3.08 rear and have the buffeting / vibration issue between 42 and 50 mph. It's pulsates similar to what's described above. Dealer wants to pull the headliner and do the bracing fix. I'm just not confident that it's the correct fix yet. Feel like I should be able to strap a spare tire down on it and if it goes away, I know it's the roof bracing and not a rear end issue.

The headliner fix will not correct the buffeting issue whatsoever. There is a checklist of items that the GM Engineers require the dealer to go thru to try to solve the issue. The headliner is one of the first things on the list. To me, it was a waste of my time and the dealers money. The next thing on the list is the "muffler" fix.......

Edited July 7, 2015 by cleanfreak

Wrench589 · July 7, 2015

I honestly do not know. I will need to look to confirm. The headliner fix will not correct the buffeting issue whatsoever. There is a checklist of items that the GM Engineers require the dealer to go thru to try to solve the issue. The headliner is one of the first things on the list. To me, it was a waste of my time and the dealers money. The next thing on the list is the "muffler" fix.......

What is the muffler fix? I must have missed that one along the way.

Still seems that the only reports of success have been rear differential. Nit all, but several. Nothing else has worked, although it haven't kept track if these same successes also had the list of things previously done...such as the roof panel re-glue. If they did, then there actually could be some validity to the notion that all these thing contribute and all need to be addressed. In fact, as I write this, I wonder if that's the difference between rear differential replacements that worked and the ones that didn't!

My dealer is still waiting for their new "Pico meter" so they can take the vibration readings and report the GM. Yea, I know, what a ridiculous wait. But I can only assume the folks at Pico can't keep up with orders from GM dealerships, and we always have to wait till the end up here in Canada! Hoping once they take all the vibration data, GM will approve them to install a new rear end and maybe I'll be one of the lucky ones and problem solved!

jasondenali15 · July 7, 2015

Clean or Spinning, do either of you have the HD trailer package with the 3.42 rear end? Just wondering if the 3.08/3.42 rear axle makes any difference with regard to the vibration/buffeting issue,

Great question. I think finding a common one makes sense. Having said that, based on my experience, I found both problematic if the root cause is the rear end:

My first repurchased 2015 Denali had GU6, rear axle, 3.42 ratio

My second repurchased 2015i Denali had GU5, rear axle, 3.23

spinningwheel · July 7, 2015

Both of mine have GU5. I had roof panel re-glue and complete rear replacement and still had the same issues.

jasondenali15 · July 8, 2015

Both of mine have GU5. I had roof panel re-glue and complete rear replacement and still had the same issues.

Just brutal. Sorry. Did you get your money back?

cleanfreak · July 8, 2015

What is the muffler fix? I must have missed that one along the way.

I am not 100% for sure. My Service Manager mentioned he would do the "muffler fix" next and the Service Manager from up North stated he had already done this fix and it did not correct the issue.

When I told him this did not correct the issue according the SM up North, he started working on the rear end instead......

.......Now you got me wondering what it is as well

Edited July 8, 2015 by cleanfreak

spinningwheel · July 8, 2015

Just brutal. Sorry. Did you get your money back?

At first I wanted my money back and they said no, only replacement. Then I said I'll wait for a 2016 and they said no, you have to pick a 2015 in stock. So I picked one that cost more than the first one, with no cost to me. Now with almost a thousand miles on it (knock on wood) it hasn't had any issues.

Cl Houn · July 12, 2015

I am not 100% for sure. My Service Manager mentioned he would do the "muffler fix" next and the Service Manager from up North stated he had already done this fix and it did not correct the issue.

When I told him this did not correct the issue according the SM up North, he started working on the rear end instead......

.......Now you got me wondering what it is as well

So your saying the rear end problem is fixed , but a muffler problem might be the new vibration?

I mean if a problem came back 300 miles later then the original problem is isolated to what they replaced right