2015 YUKON NOISE IN CABIN

ajs800 · November 4, 2016

And how many have folded the mirrors in to see how the racket abates? There's no dispute about the existence of a problem and GM would surely like to find the source. Not to be a pest but I've read reams of complaints with little research as to the source. It's far too easy to blame GM and yes they should have caught this at the wind tunnel but it's evident at this point that griping about it is hardly the cure. Meanwhile, I'm going with trial and error. I'm with you on this Boaz, because maybe this pig just needs more lipstick.

no research? There have been folks on here for over 2yrs now many of whom have gone through countless dealers, engineers, DIY fixes, etc. I worked with multiple dealers in my case and they were clueless for the most part but did get engineers involved. The last one I spoke with told me that GM is fully aware of it and they are attempting to find a fix nationwide but don't have an answer (this was 6mos ago.) He stated that they have attempted several different repairs and sometimes it works and sometimes it doesn't.

Edited November 4, 2016 by ajs800

ajs800 · November 4, 2016

The root cause (chassis too sensitive?) hasn't been addressed but I can at least control the input (tires) now that I know what it is. If this means a few extra road force balances over the lifetime of the vehicle, then so be it. A quality tire sure seems to make a difference too.

It's an awesome truck otherwise.

Edited November 4, 2016 by ajs800

ajs800 · November 4, 2016

Thanks, I read your post. Are you satisfied with the results? Do you feel that it is a permanent solution? I was hoping for stories from people who haven't posted yet but I appreciate the reply.

The root cause (chassis too sensitive?) hasn't been addressed but I can at least control the input (tires) now that I know what it is. If this means a few extra road force balances over the lifetime of the vehicle, then so be it. A quality tire sure seems to make a difference too.

It's an awesome truck otherwise.

ditto...we had new tires installed and road forced to low # and it took care of 90% of it. However, I know it's a band-aid fix and will most likely creep back once decent number of miles are logged.

boazEarl8 · November 4, 2016

The low road force balance under 15lbs (and better tires especially the Michelin LTX) has been by far the best band aid to date

In some, the problem is gone while for others greatly reduces the magnitude of the issues

Some are now saying that GM changed the body mounts in the '17s, which has fixed the issue as well

albader2007 · November 4, 2016

What is that mean body mounts and could we do it to our 2016's ?

boazEarl8 · November 4, 2016

No one has tried it yet but give it a few as I'm sure people will start as soon as more 17s hit the streets

What is that mean body mounts and could we do it to our 2016's ?

zfasts03 · November 5, 2016

At 850 miles and having more time behind the wheel. (Wife usually drives it.) I was thinking: How about rear shocks. Mine is booming some over bumps and road imperfections, seems to be originating from rear shocks then resonates through the cab. The problem acts like too much rear tire pressure. However, even running 2 under at 33 there is some booming.

My `06 Honda Odyssey had rear shocks that would bang over bumps. Replaced the shocks to resolve the problem.

Has anyone tried a better shock like a Bilstein (firm but amazing at energy absorbing) or a known softer shock in the rear. I have Bilstein for my `97 Dodge Ram. The best shocks I have owned.

Just kinda feels/sounds truck like, and Active Fuel Management doesn't help.

Basically what this platform is: The luxurious expectations and large cabin make for the complaints. But it is really a TRUCK. and people who buy big expensive SUV's are thinking luxury and prestige and forgotten it is based off of a TRUCK with spring rates, shocks, frame and tires to carry and haul lots of cargo.

Anyone ever drive an empty cargo van. That is an example of extreme cabin noise. (again based on a truck platform)

Edited November 5, 2016 by zfasts03

boazEarl8 · November 5, 2016

Fair points except that the last gen didn't suffer from this issue hence the complaints ... like your cargo van example, that sensation is always in a cargo van and pretty much expected in future/new vans

Basically what this platform is: The luxurious expectations and large cabin make for the complaints. But it is really a TRUCK. and people who buy big expensive SUV's are thinking luxury and prestige and forgotten it is based off of a TRUCK with spring rates, shocks, frame and tires to carry and haul lots of cargo.

Elripster · November 5, 2016

I now have over 22k miles on my Z71 Burban. I can make the buffeting come and go at will and by doing so have confirmed the issue. First, let's talk about what the issue is not.

- Shocks/Tires/AFM.... all of these are normal features of vehicles and vehicles should not boom and vibrate due to them. No past generations of Surban had our issues and I doubt the next will either. Typical vehicles should not need unicorn grade car parts to function properly. I have put so many suspension mods on vehicles and never had these issues.

- Because it is a truck - not... I have been driving trucks for years and none of them ever did this. Now, my burban doesn't do it either. It is the luxury vehicle I bought. It is the vehicle that GM execs drove thousands of miles in before signing off on release because there is no way GM execs would have tolerated these issues if their test mules had exhibited them.

The issue from a high level stems from weight saving efforts which resulted in paper thin sheet metal. To keep the sheet metal from vibrating (booming) and flexing (buffeting) it absolutely HAS to be attached firmly to its braces. In our case, the roof, due the roof panel being compressed from the edges, wants to pop off of the roof bows rather than be stretched tight against the roof bows (how they should be). As a result, the roof pops off and you are driving in a giant drum. This is a manufacturing defect.

You all can search on my screen name if you want to see what was done to my truck but the real story is that I made some plastic pieces to wedge between the roof rack rails and roof. You could make some out of a 2X4's if you wanted to test this (yeah, that would look rather 'neck on one of our trucks) When they are in place, zero booming and buffeting. Remove them, both come back. Keep in mind my dealer put Dynamat on my roof and lots of extra glue to hod the roof to the bows. When the bows again became detached, the issues returned. Put the roof back onto the bows, the issues go away. I know of no other better way to confirm root cause than to be able to make a chance and get an issue to come/go at will.

Dealers cannot redesign, only repair. So they are trying everything in the book to not introduce the forces that cause the noises. Unfortunately, this is a mission impossible. There will always be a road surfaces, temperatures, etc... that produce the issues. Automakers know this. Vehicles have too be designed to tolerate these issues.

Find a way to pin your roof down and you to can get the truck you thought you were buying.

Frank

Elripster · November 5, 2016

I now have over 22k miles on my Z71 Burban. I can make the buffeting come and go at will and by doing so have confirmed the issue. First, let's talk about what the issue is not.

- Shocks/Tires/AFM.... all of these are normal features of vehicles and vehicles should not boom and vibrate due to them. No past generations of Surban had our issues and I doubt the next will either. Typical vehicles should not need unicorn grade car parts to function properly. I have put so many suspension mods on vehicles and never had these issues.

- Because it is a truck - not... I have been driving trucks for years and none of them ever did this. Now, my burban doesn't do it either. It is the luxury vehicle I bought. It is the vehicle that GM execs drove thousands of miles in before signing off on release because there is no way GM execs would have tolerated these issues if their test mules had exhibited them.

The issue from a high level stems from weight saving efforts which resulted in paper thin sheet metal. To keep the sheet metal from vibrating (booming) and flexing (buffeting) it absolutely HAS to be attached firmly to its braces. In our case, the roof, due the roof panel being compressed from the edges, wants to pop off of the roof bows rather than be stretched tight against the roof bows (how they should be). As a result, the roof pops off and you are driving in a giant drum. This is a manufacturing defect.

You all can search on my screen name if you want to see what was done to my truck but the real story is that I made some plastic pieces to wedge between the roof rack rails and roof. You could make some out of a 2X4's if you wanted to test this (yeah, that would look rather 'neck on one of our trucks) When they are in place, zero booming and buffeting. Remove them, both come back. Keep in mind my dealer put Dynamat on my roof and lots of extra glue to hod the roof to the bows. When the bows again became detached, the issues returned. Put the roof back onto the bows, the issues go away. I know of no other better way to confirm root cause than to be able to make a chance and get an issue to come/go at will.

Dealers cannot redesign, only repair. So they are trying everything in the book to not introduce the forces that cause the noises. Unfortunately, this is a mission impossible. There will always be a road surfaces, temperatures, etc... that produce the issues. Automakers know this. Vehicles have too be designed to tolerate these issues.

Find a way to pin your roof down and you to can get the truck you thought you were buying.

Frank

I now have over 22k miles on my Z71 Burban. I can make the buffeting come and go at will and by doing so have confirmed the issue. First, let's talk about what the issue is not.

- Shocks/Tires/AFM.... all of these are normal features of vehicles and vehicles should not boom and vibrate due to them. No past generations of Surban had our issues and I doubt the next will either. Typical vehicles should not need unicorn grade car parts to function properly. I have put so many suspension mods on vehicles and never had these issues.

- Because it is a truck - not... I have been driving trucks for years and none of them ever did this. Now, my burban doesn't do it either. It is the luxury vehicle I bought. It is the vehicle that GM execs drove thousands of miles in before signing off on release because there is no way GM execs would have tolerated these issues if their test mules had exhibited them.

The issue from a high level stems from weight saving efforts which resulted in paper thin sheet metal. To keep the sheet metal from vibrating (booming) and flexing (buffeting) it absolutely HAS to be attached firmly to its braces. In our case, the roof, due the roof panel being compressed from the edges, wants to pop off of the roof bows rather than be stretched tight against the roof bows (how they should be). As a result, the roof pops off and you are driving in a giant drum. This is a manufacturing defect.

You all can search on my screen name if you want to see what was done to my truck but the real story is that I made some plastic pieces to wedge between the roof rack rails and roof. You could make some out of a 2X4's if you wanted to test this (yeah, that would look rather 'neck on one of our trucks) When they are in place, zero booming and buffeting. Remove them, both come back. Keep in mind my dealer put Dynamat on my roof and lots of extra glue to hod the roof to the bows. When the bows again became detached, the issues returned. Put the roof back onto the bows, the issues go away. I know of no other better way to confirm root cause than to be able to make a chance and get an issue to come/go at will.

Dealers cannot redesign, only repair. So they are trying everything in the book to not introduce the forces that cause the noises. Unfortunately, this is a mission impossible. There will always be a road surfaces, temperatures, etc... that produce the issues. Automakers know this. Vehicles have too be designed to tolerate these issues.

Find a way to pin your roof down and you to can get the truck you thought you were buying.

Frank

I now have over 22k miles on my Z71 Burban. I can make the buffeting come and go at will and by doing so have confirmed the issue. First, let's talk about what the issue is not.

- Shocks/Tires/AFM.... all of these are normal features of vehicles and vehicles should not boom and vibrate due to them. No past generations of Surban had our issues and I doubt the next will either. Typical vehicles should not need unicorn grade car parts to function properly. I have put so many suspension mods on vehicles and never had these issues.

- Because it is a truck - not... I have been driving trucks for years and none of them ever did this. Now, my burban doesn't do it either. It is the luxury vehicle I bought. It is the vehicle that GM execs drove thousands of miles in before signing off on release because there is no way GM execs would have tolerated these issues if their test mules had exhibited them.

The issue from a high level stems from weight saving efforts which resulted in paper thin sheet metal. To keep the sheet metal from vibrating (booming) and flexing (buffeting) it absolutely HAS to be attached firmly to its braces. In our case, the roof, due the roof panel being compressed from the edges, wants to pop off of the roof bows rather than be stretched tight against the roof bows (how they should be). As a result, the roof pops off and you are driving in a giant drum. This is a manufacturing defect.

You all can search on my screen name if you want to see what was done to my truck but the real story is that I made some plastic pieces to wedge between the roof rack rails and roof. You could make some out of a 2X4's if you wanted to test this (yeah, that would look rather 'neck on one of our trucks) When they are in place, zero booming and buffeting. Remove them, both come back. Keep in mind my dealer put Dynamat on my roof and lots of extra glue to hod the roof to the bows. When the bows again became detached, the issues returned. Put the roof back onto the bows, the issues go away. I know of no other better way to confirm root cause than to be able to make a chance and get an issue to come/go at will.

Dealers cannot redesign, only repair. So they are trying everything in the book to not introduce the forces that cause the noises. Unfortunately, this is a mission impossible. There will always be a road surfaces, temperatures, etc... that produce the issues. Automakers know this. Vehicles have too be designed to tolerate these issues.

Find a way to pin your roof down and you to can get the truck you thought you were buying.

Frank

Elripster · November 5, 2016

How do you delete a post?

Wrench589 · November 5, 2016

How do you delete a post?

I don't think you can. Best I found is to Edit the post and delete all the text. I think it won't let you leave it blank, so you'll have to type something like "deleted" in there.

Wrench589 · November 5, 2016

I now have over 22k miles on my Z71 Burban. I can make the buffeting come and go at will and by doing so have confirmed the issue. First, let's talk about what the issue is not.

- Shocks/Tires/AFM.... all of these are normal features of vehicles and vehicles should not boom and vibrate due to them. No past generations of Surban had our issues and I doubt the next will either. Typical vehicles should not need unicorn grade car parts to function properly. I have put so many suspension mods on vehicles and never had these issues.

- Because it is a truck - not... I have been driving trucks for years and none of them ever did this. Now, my burban doesn't do it either. It is the luxury vehicle I bought. It is the vehicle that GM execs drove thousands of miles in before signing off on release because there is no way GM execs would have tolerated these issues if their test mules had exhibited them.

The issue from a high level stems from weight saving efforts which resulted in paper thin sheet metal. To keep the sheet metal from vibrating (booming) and flexing (buffeting) it absolutely HAS to be attached firmly to its braces. In our case, the roof, due the roof panel being compressed from the edges, wants to pop off of the roof bows rather than be stretched tight against the roof bows (how they should be). As a result, the roof pops off and you are driving in a giant drum. This is a manufacturing defect.

You all can search on my screen name if you want to see what was done to my truck but the real story is that I made some plastic pieces to wedge between the roof rack rails and roof. You could make some out of a 2X4's if you wanted to test this (yeah, that would look rather 'neck on one of our trucks) When they are in place, zero booming and buffeting. Remove them, both come back. Keep in mind my dealer put Dynamat on my roof and lots of extra glue to hod the roof to the bows. When the bows again became detached, the issues returned. Put the roof back onto the bows, the issues go away. I know of no other better way to confirm root cause than to be able to make a chance and get an issue to come/go at will.

Dealers cannot redesign, only repair. So they are trying everything in the book to not introduce the forces that cause the noises. Unfortunately, this is a mission impossible. There will always be a road surfaces, temperatures, etc... that produce the issues. Automakers know this. Vehicles have too be designed to tolerate these issues.

Find a way to pin your roof down and you to can get the truck you thought you were buying.

Frank

Frank, I scanned all your posts - did you post any photos of the testing you did with roof rack cross bars? I was contemplating doing the same exact thing.

I've said from day one that the noise/sounds have to be coming from a large surface and there is only so many suspects on a vehicle, the roof being the largest and most likely. And when I say how flimsy the factory cross-bows are inside the roof (when they did the "fix" on mine), I was pretty sure it's a lost cause, glued or not glued. Seems like you've proven it. I might do the same, but the reality is, even if we had quantitative data to show GM, what would they do? Nothing, I suspect. Because the solution is not practical for them. Some kind of reinforcement kit that dealers are to install? Imagine what a shit-show that would be, never mind the cost. Plus, could affect crash testing certifications. I'm sure the actuaries at GM have calculated it's better to fund the simple things they are doing to appease customers and the odd buy back that a massive repair campaign. Let's face it, only a small percentage of customers are complaining and with GM doing business all over the world, those numbers are miniscule.

boazEarl8 · November 5, 2016

You do know that GM once had an official memo for the roof repair but have since pulled it - no official reason but suspect due to the bows coming undone again - so it's definitely the roof, and I do not think we'll see a future fix from GM

Reduce inputs into the vehicle and/or the "rip" roof fix are the only ways to go

Frank, I scanned all your posts - did you post any photos of the testing you did with roof rack cross bars? I was contemplating doing the same exact thing.

I've said from day one that the noise/sounds have to be coming from a large surface and there is only so many suspects on a vehicle, the roof being the largest and most likely. And when I say how flimsy the factory cross-bows are inside the roof (when they did the "fix" on mine), I was pretty sure it's a lost cause, glued or not glued. Seems like you've proven it. I might do the same, but the reality is, even if we had quantitative data to show GM, what would they do? Nothing, I suspect. Because the solution is not practical for them. Some kind of reinforcement kit that dealers are to install? Imagine what a shit-show that would be, never mind the cost. Plus, could affect crash testing certifications. I'm sure the actuaries at GM have calculated it's better to fund the simple things they are doing to appease customers and the odd buy back that a massive repair campaign. Let's face it, only a small percentage of customers are complaining and with GM doing business all over the world, those numbers are miniscule.

Wrench589 · November 5, 2016

You do know that GM once had an official memo for the roof repair but have since pulled it - no official reason but suspect due to the bows coming undone again - so it's definitely the roof, and I do not think we'll see a future fix from GM

Reduce inputs into the vehicle and/or the "rip" roof fix are the only ways to go

Seriously?? They pulled the "roof repair"? Wow. Well, not surprised. It was a pointless repair because even though they supposedly shimmed any excessive gaps, I'm sure that at the end of the day, the amount of flex the roof sees, especially when the vehicle is twisted going over large front-back angle variation, exceeds the strength of even the best glue. Glue. What a joke. A vehicle that's glued together - what's the world coming to!

So what exactly does Elripsters fix look like?