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Wing350

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  1. Jert1346, You're skipping the Lemon-Law approach and I think that's a big mistake. My sense is GM long ago stopped volunteering buy-backs unless you caught the problem in the first few miles. And plenty of people have tried to explain to GM how they're a big Yukon/Suburban/GM fan, it won't work either. Same with the concern for the safety of your kids. They hear it all the time. Get to your state's info on Lemon-Law rights and start the process. GM will play dumb and count on you to give-up. If you just settle for a cheap trade-assistance package or sell it yourself then you are letting them off the hook and walking away from your investment. The process is not that difficult and you can recoup a lot more of your money. But you have to start the process, you cannot just threaten to.
  2. They're hiding it because of the millions of dollars of buybacks they are forced to do. And let me tell you they watch this website closely. They want nothing more than for this topic to quiet down. That's one of the reasons you haven't seen the GM responses anymore.
  3. GM Service Bulletin PIT 5318 is copied on Post 113 of this Topic. I think roughly page 8. There is an updated PIT 5318A that has the additional note regarding other "Inputs that can excite the roof". You would need to ask your service manager for that version as I have not yet seen it posted.
  4. I totally agree that there is a big problem with the shock and spring setup for both the Premium Smooth Ride and Magnetic Ride vehicles. Add into that some 20" or 22" wheels and it's even worse. A bad expansion joint will set your teeth rattling. It will also excite the roof section to give you a quick baffling sound to accelerate your headache. But if you're going to push back at Chevy with how miserable those suspensions are then you are only going to hear " that's how we built them. Sorry if you don't like the suspension but they're performing to specifications." If you want your money back you need to take a copy of the GM Service Bulletin PIT 5318 and a copy of your state's Lemon Law into your dealer and say "we're going to fix this baffling sound that GM admits is a problem. And if you can't do it in the time/attempts as spelled out in the Lemon Law then I will demand a refund." Any service manager that has tried this repair will probably dump this in GM's lap at this point because he knows it's a hopeless cause. GM will send out an engineer to measure how bad your vehicle is and if they think they can get away with pretending there is no problem. Read the bulletin as it explains many of the different things that excite / "oil-can" / baffle the roof. Stay tough. Document your calls and conversations. They can't fix them. You will get your money back.
  5. Please forgive my comments as I know you mean well but I've been following this thread for a long time and heard people reference contacting the NHTSA but I've never seen anything show up on their website relating to this issue. I don't even see the Service Bulletin PIT5318 that GM produced back in August 2014. I noticed the death toll on the Chevy Cobalt ignition switch thing is up to 64 now. If you follow that story and the actions of both the NHTSA and GM, you'll have a good idea of what to expect from both organizations. .
  6. Great post, Please give us more info on these shocks. Part number or anything to reference. ! ! !
  7. So, in some ways this is all good news. You are now getting the "it's you, not the vehicle" story from the dealer and the GM customer service person is now someone who sounds a lot more sophisticated than the earlier over-worked, under-trained people you've dealt with. That's because both of these businesses know where your situation is heading. The dealer knows you've got a vehicle that could probably be fixed if they spent days and days tracking down all of the "inputs" listed in the notes of Service Bulletin PIT5318A but they know that well before then you will have progressed into a nuclear-hot, lemon-law angry customer, all for a vehicle that GM should have built properly in the first place. The Service Bulletin essentially says that this large roof panel has shaken itself free of the structure that supports it and is now acting like a big bass drum instead of a medium bass drum for anyone riding inside of it. And that even after they complete this tricky and expensive body panel repair to fix it back into a medium bass drum, at least four other quality problems may continue to bang on the medium bass drum. Again . . . even after they complete this tricky and expensive body panel repair to fix it back into a medium bass drum, at least four other quality problems may continue to bang on the medium bass drum. That's a time-waster so big that they want you to go to the Chevy dealer in the next town to work it out. You can now expect enthusiastic support and service from your dealer exactly never. Over at GM, your problem may have been transitioned from the people who try to keep your dealer doing their job to the group that sees a buy-back coming. They’ll probably now get one of the GM techs out to your dealer with some microphones and vibration analyzing software that will show them (not you) how bad the drum is being beaten. If it’s bad enough, and your mileage is low enough, and you scream enough, and the legal threat is big enough, then they will start a process to buy-back your vehicle. Otherwise, you are going to have to demand your dealer and GM address each of those potential quality problems. This is where the cotton balls and tape will actually come in handy. Stuff three cotton balls in each ear and wrap the tape around your head to keep them in place. You are going to hear them say “that’s normal” over three hundred times. They are going to compare your vehicle to another new vehicle/bass drum in their inventory that is also a lemon, “See, your lemon sound’s just like this other lemon.” Make them show you the test results and shop notes. Ride with them in the car. Keep all of your receipts. Document your phone calls with the people who are so concerned about your situation that they refuse to give you their last name. They are keeping all of this info in their “potential legal threat” file, so you should too. GM has been down this road many more times than you and they know how to play the game. They are also watching to see if you’re a marshmallow.
  8. The Service Bulletin is the same as on page 8 of this thread but with the added text from above. Again, this is tricky repair that is not even guaranteed to fix the problem. Expect your typical GM Service Manager who probably doesn't have a body shop to play dumb and want nothing to do with this headache.
  9. My 2 cents . . . I don’t think I’ve got the noise cancellation feature in my Chevy so I don’t think it’s the SOURCE of the problem. But did anyone notice that the Service Bulletin PIT5318 was updated on Nov. 19, 2014? They added some interesting wording . . . “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). Examples of inputs that can excite the roof may be: tires with excessive road force, exhaust back pressure valve issues, and/or rear axle related issues such as pitchline runout. These other areas may need to be addressed if the body pressure booming is still present at the completion of this PI.” Then later . . .”The body booming issue may be more noticeable when the engine is in V4 mode.” I read this to say this is a huge, messy and costly repair that might not totally resolve the problem. But it is the problem.
  10. Anon2015, You've got to give 'em a chance. I've got to think Yukon/ Suburban customers are some of GM's most loyal ( and profitable ). I can't believe it's not important to them to get this thing resolved. Andraya, who wrote the Service Bulletin PIT5318 ? Can they share anything new?
  11. Thanks Andraya, So, could you check within GM and then tell us what this droning/buffetting sound is with early 2015 Yukon XL/Suburbans and how to fix it? I know you must keep records on this stuff. Apparently the Service Bulletin PIT5318 Doc ID 3975780 isn't the best solution. Also, it seems that there are a lot of Yukon XL/Suburban fans watching this thread to see if the problem is resolved with your current production (2015i's). I'm guessing if they fixed the problem with the current production (2015i) then somebody there knows what is causing it in the earlier 2015s. They sound ready to buy ! And I'm definitely ready to end the headaches. We're all anxious to know what you can find. Thanks, again.
  12. Anyone have any progress with resolving this issue? Is the cold weather making it worse? I spent a decent amount of time in my truck this weekend and it seems worse.
  13. . While it sometimes appears to be a wind buffeting sound, I believe it's actually vibrations in the powertrain bleeding through the stiff suspension into the cabin. And I think we're all getting "Cruzed". I think GM is very familiar with the problem but conveniently avoiding any recognition of it. They think they'll figure out a "fix" in the near future and are stalling for time. .
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