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Posted

I wish you luck with that effort. The microphone alone with the sensitivity necessary at what is suspected to be very low frequencies, can run from $800 to a few thousand dollars...that is without the preamp and cable (specialty items due to the noise floor in electronics hiding signals), and the analysis software can, again, be a few thousand. You can buy AudioTools for your iPad/iPhone and see what you get; but, that still leaves a challenging problem. Specifically, you'll have to find and isolate the offending frequency(ies) from all the background noise (engine/drive train/road noise, etc.) which is not contributory to the problem you're trying to identify. I am not saying it cannot be done, nor that you don't have a ghost chance of finding it ... just that it is a bunch more complex than measuring stuff with a microphone.

 

Again, I just tested mine to make certain that whatever was happening wasn't outside my human perception and I had the problem and didn't know it.

Posted

Hey everyone,

First time poster and I found this forum because I was searching this exact topic. On Monday I brought my Yukon Denali to the dealership for this same pressure sensation that so many of you have described. The dealership told me that whatever I was experiencing was just me and thus extremely isolated. My comment back before storming out was that I didn't care if it was just me as it was still happening to me.

The one thing I keep thinking about as the reason for this happening is that it must relate to the cause of buffeting in the first place...which is a loss or escape of pressure. As a result I'm convinced it must have something to do with the Vents in the vehicle. I don't know how many there are or where they're located, but just a thought.

Would one of you be willing to drive at the speed that creates the pressure and then hit the button that closes the vents (recirculate button) to see if anything changes?

I'm in Canada and with the recent snow fall im having trouble replicating the sound.

Posted

Hey everyone,

First time poster and I found this forum because I was searching this exact topic. On Monday I brought my Yukon Denali to the dealership for this same pressure sensation that so many of you have described. The dealership told me that whatever I was experiencing was just me and thus extremely isolated. My comment back before storming out was that I didn't care if it was just me as it was still happening to me.

The one thing I keep thinking about as the reason for this happening is that it must relate to the cause of buffeting in the first place...which is a loss or escape of pressure. As a result I'm convinced it must have something to do with the Vents in the vehicle. I don't know how many there are or where they're located, but just a thought.

Would one of you be willing to drive at the speed that creates the pressure and then hit the button that closes the vents (recirculate button) to see if anything changes?

I'm in Canada and with the recent snow fall im having trouble replicating the sound.

Someone on another forum believed to have found a correlation with the recirc active causing noise and I imagine that could cause a pressure increase?

Posted

Gixxer, I'm curious why you can't replicate the sound because the weather changed. That might be crucial info, since is is the first time I've heard anyone say the problem stopped, even for a short period. What is different about the situation now that has resulted in no noise? Colder temps? Different road surface conditions? Or are we looking at something different in the climate control system settings?

Posted

Yeah I'm a bit stumped as well. When the conditions were "normal" it was all the time...now more sporadic. I'm still thinking it's related to the vents or to a lesser extent,the air conditioning.

Posted

We can hope GM will take our issue seriously?

 

As of now no one has died from this so we might be in for a long wait for a fix.

 

The Worst CEOs of 2014 by FOX Business

 

#1 Mary Barra, CEO, General Motors

Barra’s first year as chief executive of the nation’s top automaker has been a disaster.

 

She may not have been CEO when the deadly ignition switch defect scandal occurred, but as executive VP of product development and supply chain, her hands are anything but clean in one of the most corrupt corporate cover-ups I’ve ever seen.

 

Meanwhile telling Congress that GM’s (GM) culture has changed was ludicrous. Had it not been for a lawsuit involving a woman who died in a 2009 Chevy Cobalt accident, the fatal safety flaw might never have come to light. GM was essentially dragged kicking and screaming into recalling millions of vehicles. Shares of GM are down 19% year-to-date.

 

I hope Barra has an enormous stocking hanging from her fireplace; I just saw Santa load a gargantuan lump of coal onto his sled … with her name on it.

 

Sorry this is a little off topic. Thanks to all of the people who have posted. Have a Merry Christmas.Snuke1e

Posted

Merry Christmas and Happy Holidays to all. I hope the new year brings resolution to everyone having this problem.

Posted

From reading through the post of the mix of people with and without issues, I can't help but still revert back to the noisie canceling... Our first Yukon just felt wrong sitting in it.. Not moving, no vibrations, just felt wrong once the door was closed -- and it "buffeted" like crazy around 40mph. Just as JasonDenali said -- his new one, which doesn't have a problem, felt different just sitting in it... Or the other poster with the Escalade said once you crank the stereo up, the pressure wasn't there.. When the stereo is up, there's nothing that needs "canceled" out,right? I noticed this in our current Denali tonight... Yes, the fuse pull really reduced the sensation I was having, but I still feel pressure like an elevation change occasionally... But tonight the wife and I cranked up the stereo on the ride home and I noticed very little pressure at all.

 

Anon, is there any way you could find someone local that has a truck WITH the problem so you could use your equipment on theirs?? Just a thought :)

Posted

Well, signed a 24 month short term lease. Ugh! I really want my Yukon XL back. Sad that I miss it, even with the pressure/noise issue. If I didnt have four kids, I would have kept the truck and just rode around with my ear plugs I use when I go shooting. I guess the only thing I can look forward to is the possible 10 speed transmission for the 2017 model. Yay.

Posted

A car. There was nothing comparable and if there was, it would have been for a 36 month lease. Disappointing. It's like when Americans complain about manufacturing jobs in the US, but still do all there shopping at Walmart, king of China. Same thing here. We all complain about this, but still purchase the vehicle and we force nobody's hand.

Posted

A car. There was nothing comparable and if there was, it would have been for a 36 month lease. Disappointing. It's like when Americans complain about manufacturing jobs in the US, but still do all there shopping at Walmart, king of China. Same thing here. We all complain about this, but still purchase the vehicle and we force nobody's hand.

How right you are. North American consumers are their own worst enemies some times. Well, kudos to you for bailing on the Yukon. If I had done some research and found this thread before buying, I would have done the same. But my wife loves it now and since there is nothing else on the market like it, I'm stuck.

 

Thanks for starting the thread!

 

By the way, I hope it's not a Malibu. A friend of my in-laws just rented one from one of the big rental companies on her way to Corpus Cristi yesterday and the dash burst into flames on the freeway, then the car exploded. Burned the car to the ground! Luckily, a state trooper pulled her away from the car and put her in his cruiser before it exploded. No idea what the cause was but the first thing that popped into my head was "ignition switch!" Arrrgggg!

Posted

I recently bought a 2015 Yukon XL, and like most others on this forum, I have had the terrible experience of the cabin pressure and loud noise at speeds between 40-45 mph and around 70 mph. I took it in to the dealer the day after I bought it highlighting the issue, and after saying they had never heard of something like this (of course), they then determined they didn't have the expertise to fix it properly. They sent it to a local body shop who did the repair outlined in the GMC technical bulletin, and then called me stating "everything is fixed." I picked up the vehicle, and of course nothing was fixed. I gave it back to them and they have had it for over a week now doing God knows what. In the meantime, I contacted corporate GM on this issue, and they also stated this was the first they had heard of this issue. After 15 minutes of extracting from me every detail of what exactly was going on with this issue, they said I would have to take it to my dealer to get fixed. I said I already tried that and they did not fix it. GMC said there was nothing they could unless the vehicle gets recalled. Clearly, they are not standing behind this vehicle.

 

Based on all the posts I have read in this forum, I am operating under the assumption that the dealer will be unable to fix this issue. I have forced myself to become familiar with my state's (WI) lemon laws, as I think this will be the most likely outcome of this nightmare. I have one question to everyone who has been able to get their dealer to buy back their vehicle. Could you provide a quick summary as to how you did this? I'm picturing attempting this and the dealer throwing out every excuse in the book why they can't buy the vehicle back and then I'm stuck, as neither the dealer nor GMC stand behind the vehicle. Thus, if anyone is willing to comment on exactly what basis they used (lemon laws, threat of lawsuit, etc.) to get their dealer to buy their Yukon back, I (and and I'm sure many others) would greatly appreciate it.

Posted (edited)

Hey first timeGmbuyer: Well I showed up with a local TV station (my brother works there), and they have this segment called " Turn to 2" . When they realized the camera people were there to film and ask questions, the process sped up. Call the BBB and the States Attorney Genral and file a formal complaint. It's cheaper for GM to buy your vehicle back versus bad plublicy. They have money set aside for these instances. Chump change in other words. They would rather you go away, but would be more than happy to just take the vehicle back. Make sure to start a new service ticket every time you take the vehicle. I took the vehicle back home knowing it was still broken but it forced then to start a new ticket. In ohio, three strikes your out in the lemon law. I was at 8 and they just bought it back because they knew I would have smoked then in court.

Edited by FOURKNUCKLES
  • Like 1
Posted (edited)

From reading through the post of the mix of people with and without issues, I can't help but still revert back to the noisie canceling... Our first Yukon just felt wrong sitting in it.. Not moving, no vibrations, just felt wrong once the door was closed -- and it "buffeted" like crazy around 40mph. Just as JasonDenali said -- his new one, which doesn't have a problem, felt different just sitting in it... Or the other poster with the Escalade said once you crank the stereo up, the pressure wasn't there.. When the stereo is up, there's nothing that needs "canceled" out,right? I noticed this in our current Denali tonight... Yes, the fuse pull really reduced the sensation I was having, but I still feel pressure like an elevation change occasionally... But tonight the wife and I cranked up the stereo on the ride home and I noticed very little pressure at all.

 

Anon, is there any way you could find someone local that has a truck WITH the problem so you could use your equipment on theirs?? Just a thought :)

 

 

 

 

I Was saying when the stereo is cranked up you cant hear the " tunnel effect" or Booming for the stereo is putting out other sounds to camouflage the under laying issues here. Dont think the louder stereo is fixing anything, Just masking the real problem! These SUV's I feel have SEVERAL issues that are causing these issues. This new 2015.5 Escalade is every bit as bad as our orig Yukon which GM is taking back. The Escalade has a whole new group of issues...Like the CUE system is a over complicated system with software bugs. the 360 degree camera system is USLESS at night ! The whole system is blury and un usable. Major high speed vibration issue at 70+ MPH, Strange drivetrain backlashing when coming to a stop. And this service dept...... Good Lord. :( Got the same...."GM is not aware of any of these issues" BS. They called today and are wanting to do the Headliner removal. Doesnt the field engineer know this has not worked across the country??? The scratched up, dented up Impalla they gave me as a loaner, puked oil all over my driveway, now have to get that cleaned up.

Im SO OVER this Mr and Mrs GM ! Just want my Toyota and my $150,000.00 back

 

Has anyone ever been driving very slow and have a wheel drop off a curb or driveway enterence? Our house has this very large rolling curb from the driveway to the street. Even at low low speed the wheel and tire shoot back to full length with little damping. as if they isnt any controll of the rebound / way too stiff ??? between the Bridgestone tires which are KNOWN to give very poor ride quality and these rock hard shocks..... I really think that is playing into the "tunnel Effect" over any and all bumps at any speed. ????? has anyone had new tires or shocks installed yet ? Heard GM is working in these areas.

Edited by TOBTEK

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