GM Repurchased 2nd 2015 Denali--Be Cautious of 2015s

[showtime1k]

As the OP, I have been keeping an eye out. Seems like most are good, some are bad. Here's link to another forum where people as recent as this week are still having this issue(s). Personally, I would hold off until the 16's come out. Won't be much longer and perhaps they figured it out the source. Hope so.

http://www.gm-trucks.com/forums/topic/162779-2015-yukon-noise-in-cabin/page-66

How soon is it noticed. Would a good test drive let you know right away

 

[JasonDenali15]

You will not notice right away. You need a very thorough drive. Take it for a day. I thought the second Denali was absolutely perfect...and I knew exactly what to look for (speed @35-45). That's why I took delivery...it was great. The first 150 miles or so were perfect. Around 250, the thumping and pressure was felt again. Can't understand what triggered it. Neither could anyone from the GM team. I was told "many eyes" were on my vehicle during its production and it was still repurchased.

Perhaps there is a used one on the lot with some decent miles on it. Take it for a drive at the speeds I listed at the original post and try to replicate...if you don't "feel" anything, perhaps that will give you some peace of mind that the one you like may be just fine for you and your family. I know they are not all bad. You either have a good one, or you don't. Just be sure to test drive the heck out of it.

If you do notice anything it will start at 38mph and be most noticeable around 42-44mph. Keep it there for a few minutes. All windows up, radio down. After wasting tons of time looking at other forums and chatting with other owners with the problem, this is the general consensus of the speed with most noticeable ear pressure and buffeting. Go back to the link I sent...60 plus pages of people trying to deal with this problem affecting some vehicles. I just wish I got a good one...hope you get one.

 

[showtime1k]

Sis this problem isolated to the long versions or the short versionstoo?

---------- Post added at 02:41 PM ---------- Previous post was at 01:30 PM ----------

I'm going to react a slt or Tahoe short body tomorrow for 2 days and see what people are talking about. I had a rental before but didn't notice anything

 

[JasonDenali15]

Sis this problem isolated to the long versions or the short versionstoo?

---------- Post added at 02:41 PM ---------- Previous post was at 01:30 PM ----------

I'm going to react a slt or Tahoe short body tomorrow for 2 days and see what people are talking about. I had a rental before but didn't notice anything

I think both. Mine was a short body Denali. Like I said, most are going to be just fine. Yours will probably be great. Either way, you really want to focus on 43 mph. That's the exact speed. Good luck.

Man, I really want to hate these trucks after my experience. I just love the look of them and the technology is really great. My dumbass will probably buy a 2016 Escalade. Third time may be charm?...

 

[showtime1k]

I think both. Mine was a short body Denali. Like I said, most are going to be just fine. Yours will probably be great. Either way, you really want to focus on 43 mph. That's the exact speed. Good luck.

Man, I really want to hate these trucks after my experience. I just love the look of them and the technology is really great. My dumbass will probably buy a 2016 Escalade. Third time may be charm?...

So you've got rid of yours

---------- Post added at 04:49 PM ---------- Previous post was at 04:47 PM ----------

Someone posted this on the other site today
http://www.gm-trucks.com/forums/topic/162779-2015-yukon-noise-in-cabin/page-67

Looks like it might be the fix

 

[skippy737]

i love my 2010 denali!
whats interesting in texas is these vehicles really hold their value bc the last design was pretty good and the new ones cost 65-80K so people really do search out the older denials!

 

[George C]

Skippy,
I buy strictly brand new. For my vehicle purchases, the fart smell in the seats belongs to me, and not someone else.

---------- Post added at 05:56 PM ---------- Previous post was at 05:51 PM ----------

I think both. Mine was a short body Denali. Like I said, most are going to be just fine. Yours will probably be great. Either way, you really want to focus on 43 mph. That's the exact speed. Good luck.

Man, I really want to hate these trucks after my experience. I just love the look of them and the technology is really great. My dumbass will probably buy a 2016 Escalade. Third time may be charm?...

Jason,
From a truck guy.....
Maybe this SUV just isn't for you, and your head is trying to pound the message home.
Before you buy another one, test drive the redesigned Ford king ranch F-150 with the vista roof. Unreal.
Possibly the new Duramax HD Denali.
For me, it'll be the redesigned 2017 Ford Super Duty Platinum PSD. All of the luxury, and more utility along with a mountain of power and torque. A set of aftermarket 22" wheels, and tires, and it's the ultimate head turner, along with a lot more interior room and comfort.
These big SUV trucks are very nice, but the new generation loaded up pick ups are coming through with the high end options usually only available to the luxury SUVs, and are now a step above IMO.

 

[JasonDenali15]

Skippy,
I buy strictly brand new. For my vehicle purchases, the fart smell in the seats belongs to me, and not someone else.

---------- Post added at 05:56 PM ---------- Previous post was at 05:51 PM ----------



Jason,
From a truck guy.....
Maybe this SUV just isn't for you, and your head is trying to pound the message home.
Before you buy another one, test drive the redesigned Ford king ranch F-150 with the vista roof. Unreal.
Possibly the new Duramax HD Denali.
For me, it'll be the redesigned 2017 Ford Super Duty Platinum PSD. All of the luxury, and more utility along with a mountain of power and torque. A set of aftermarket 22" wheels, and tires, and it's the ultimate head turner, along with a lot more interior room and comfort.
These big SUV trucks are very nice, but the new generation loaded up pick ups are coming through with the high end options usually only available to the luxury SUVs, and are now a step above IMO.

You are probably right...I should take the true signs from my head and not my heart (being a GM guy forever). I will take a look at some Fords, George. Hope you are well.

 

[ironrenegade21]

How pronounced is this issue? My wife mostly drives our 2015 yukon and hasnt complained about it at all. Sometimes when i drive it i think i faintly notice something but am not sure if its really there or im just being paranoid. If our yukon is affected by this is this something that will be glaringly obvious?

 

[acainindy]

Jason, I had the same issue with my July build Yukon SLE with the booming sensation. After 4 new tires, the roof service bulletin, new shocks, new wheels, and finally the replacement of the front and rear Ring and Pinion, along with the transfer case, NO MORE BOOMING sensation! I've now driven 10,000 miles, its the best vehicle I've never owned. To bad your dealer didn't find the info on the Ring and Pinion replacement, you could still be in your 2015....

 

[ironrenegade21]

Jason, I had the same issue with my July build Yukon SLE with the booming sensation. After 4 new tires, the roof service bulletin, new shocks, new wheels, and finally the replacement of the front and rear Ring and Pinion, along with the transfer case, NO MORE BOOMING sensation! I've now driven 10,000 miles, its the best vehicle I've never owned. To bad your dealer didn't find the info on the Ring and Pinion replacement, you could still be in your 2015....

How noticeable was the problem? From what ive gathered its like having the windows down a few inches and while i know what that sensation is like I havent noticed anything like that in my yukon. Is it really pronounced or more subtle?

 

[JasonDenali15]

How noticeable was the problem? From what ive gathered its like having the windows down a few inches and while i know what that sensation is like I havent noticed anything like that in my yukon. Is it really pronounced or more subtle?

If you have a Yukon and have had it for a while I would suspect you would have "felt" it or heard it by now. Drive from 38-43 mph with windows up and radio off. If you don't feel or hear anything at those speeds you are in great shape.

 

[George C]

You are probably right...I should take the true signs from my head and not my heart (being a GM guy forever). I will take a look at some Fords, George. Hope you are well.

I'm not particularly brand loyal. I have a Silverado and a Super Duty sitting side by side as my daily drivers. I just like the change up. I prefer the Ford, but have no complaints at all with the Chevy.

If you are hooked on GM, I would definitely take a Denali 2500 HD DuraMax for a test ride. You may fall in love with it. I would also highly recommend test driving a new Ford also.

 

[acainindy]

How noticeable was the problem? From what ive gathered its like having the windows down a few inches and while i know what that sensation is like I havent noticed anything like that in my yukon. Is it really pronounced or more subtle?

I noticed mine from day one. It would start around 30mph and go up to 75-80mph. At that point you could not stand it. I would get a headache after about 30 minutes in the truck when on the freeway. Think of it with the windows all the way down in the back seat.

 

[HAARubicon]

Mine has a vibration and a low drone at 35 to 45 mph. It only does it when it is V4 mode, as soon as it switches to V8 mode it goes away. Is this what some of you are feeling.

 

[humer101]

Mine has a vibration and a low drone at 35 to 45 mph. It only does it when it is V4 mode, as soon as it switches to V8 mode it goes away. Is this what some of you are feeling.

No in may car, runs great in v4 & v8, the only problem I have they fixed it was the grinding noise went the car run in 4wd mode,after 11,000 miles looks for me the got it fix.

Cannot complain about my car no more,
I have 29,000 miles already,time to go for a (2017) that is my focus now.
[emoji19]

 

[showtime1k]

Jason, I had the same issue with my July build Yukon SLE with the booming sensation. After 4 new tires, the roof service bulletin, new shocks, new wheels, and finally the replacement of the front and rear Ring and Pinion, along with the transfer case, NO MORE BOOMING sensation! I've now driven 10,000 miles, its the best vehicle I've never owned. To bad your dealer didn't find the info on the Ring and Pinion replacement, you could still be in your 2015....

They replace your shocks and wheels. What wheels did go from and to

 

[PavementPounder]

There is a fix for this now.



#PIT5318B: Wind Buffeting Drone Type Noise And/Or Body Pressure Booming And/Or Water Leak - (Jul 30, 2015)
Subject: Wind Buffeting Drone Type Noise And/Or Body Pressure Booming And/Or Water Leak


Models: 2015 Cadillac Escalade Models
2015 Chevrolet Suburban, Tahoe
2015 GMC Yukon Models

This PI was superseded to update Recommendation/Instructions. Please discard PIT5318A.

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

Condition/Concern

Note: In some cases, correcting the roof bows may not eliminate the body pressure booming issue due to the fact that the roof is being excited by some other input(s). These other areas will need to be addressed if the body pressure booming is still present at the completion of this PI. Examples of inputs that can excite the roof may be:

Tires with excessive road force (Reference "condition 1" in the latest version of PI1354)
Exhaust back pressure valve issues (Reference the latest version of PIT5404)
Rear axle related issues such as pitchline runout (Reference "Other Sources of Vibrations" Step 3 in the latest version of PI1354)

Some owners may comment of a wind buffeting/droan noise or body/pressure booming (the feeling of pressure in the ears) while driving. The body booming issue may be more noticeable when the engine is in V4 mode for active fuel management (AFM). In some cases, they may also notice a water leak from the headliner area, if equipped with a sunroof.

These concerns could be caused by the roof sheet metal no longer being attached fully to the roof bows (1). On trucks with a sunroof, it may be noticed that the rear edge of the sunroof glass is considerably lower than the roof (2). This is due to the roof sheet metal being detached from the roof bow directly behind the sunroof opening (3).
Object ID: 3973291Click here for detailed picture of the image.

Object ID: 3973293Click here for detailed picture of the image.

Object ID: 3973294Click here for detailed picture of the image.

Recommendation/Instructions

To correct this concern, apply panel vibration control material between the roof bow and roof sheet metal, along with foam shim material when necessary.

Remove the headliner to access the underside of the roof. Inspect all 4 roof bows for insufficient bonding to the roof sheet metal (4). Any roof bow that is not bonded to the sheet metal will need to be repaired.
Object ID: 3973295Click here for detailed picture of the image.

Use the following repair for all 4 bows on trucks without a sunroof, and for the 3 rear bows on trucks with a sunroof:

Use a plastic scraper or similar tool to remove the old foam. Measure the gap between the top of the roof bow and bottom of the roof sheet metal. If the gap is 1/4" (6mm) or greater, use a combination of 3/4" wide by 5/16" or 7/16" thick foam shim material (as listed below) to fill the gap between the roof bow and the sheet metal. Care should be taken to add only the correct thickness of foam to fill the gap so it does not push up on the roof. Cut the foam into 5 inch lengths and evenly place in five spots along the roof bow. With the foam shim material in place, or if the gap is less than 1/4" (6mm), use the panel control vibration material (as listed below) to fill the voids between the roof bow and sheet metal. In some cases, it may take a couple layers of material to fill the void.

Repair for 1st bow on trucks with a sunroof:

Using a plastic scraper or similar tool, remove the old foam. Use the panel control vibration material (listed below) and apply along the top of the 1st roof bow. Obtain two 2x4 pieces of wood long enough to span the opening of the sunroof. Wrap one of the 2x4's with a cloth to protect the roof paint and place it on top of the roof, see NOTE below. Place the second 2x4 underneath the roof bow, sandwiching the roof sheet metal and roof bow between the two pieces of wood. Clamp everything together using three C-clamps as shown in the photo below (5 & 6). The clamps will need to stay in place until the panel control vibration material is dry.

Note: When placing the cloth wrapped 2x4 on the top/roof, pay close attention that it is far enough forward so that the 2x4's rear edge does not contact the roof's raised ribs. The roof ribs may be damaged/dented if the 2x4 is placed on them when clamped down
Object ID: 3973296Click here for detailed picture of the image.

 

[humer101]

Wow this is serious problem.
[emoji19]

 

[JasonDenali15]

Finally! Holy $%#!!! What a mess. This completely makes me feel validated to those who thought I was crazy regarding this issue. Thanks for the post, Pavement! Much appreciated.