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Old 10-11-2011, 05:12 PM   #26
maldon
 
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Same problem, dealer mechanic wasn't helpful

And by "wasn't helpful" I mean "first told me I should live with it, because it's probably the engine vibrating the gears like old Corvettes used to do, and then swore for 45 minutes of reproductions that he didn't hear anything."

Chevrolet Customer Service, I'm going back in tomorrow with the TSB and a healthy amount of frustration , so I'd appreciate it if you could step in if they continue in the same vein.
This is the first problem I've had with my Camaro, but if this is the experience I'm going to get for normal warranty repairs, I'll look elsewhere for the next car.
Friendly Chevrolet in Dallas, TX if you're curious.

Mine is a buzzing rattle that happens exactly around 1400 RPMs, and only under throttle. Higher gears obviously cause the rattle to happen longer, since they're stuck at low RPM for longer.

Sigh.

--Marc
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Old 10-12-2011, 01:23 PM   #27
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Hi Marc, just let me know how things go and I'll step in if need be. Hopefully this gets your dealers attention and you can get rid of this issue.

Jeff Morris, Chevrolet Customer Service
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Old 10-12-2011, 05:44 PM   #28
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Update from the dealership. Had to call them after waiting all day for an update. Since my car was built after the specified date in the tech bulletin, the TB doesn't apply. They tested for the condition specified in the bulletin and didn't find a problem. He said that it already had a newer exhaust that doesn't have a rattling problem.
Tomorrow, the service guy is going to have a different person ("build&tune" not sure if I heard him right) check the heat shields on the muffler and then drive it again.

Hopefully it won't rattle when I get it back tomorrow.

Jeff M, why does it feel like the dealership's primary goal is to convince you that the problem you have isn't actually a problem, or is something that you're imaging?
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Old 10-12-2011, 11:41 PM   #29
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I have the same issue with my exhaust, I tested for this condition and it does exist in my 2011. I also looked around for other things that may be wrong and found a plastic shield that covers the fuel lines on the right side of the car that is loose. If you look at the back of the shield there appears to be mount bolt holes on each side and neither one has a bolt in it. If you flip it, it vibrates against the body of the car and makes a buzzing sound. I assume that this is one of my noises. I am going to take it in after the GM rep gets back to me.

Good luck with your rattle.
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Old 10-13-2011, 04:13 PM   #30
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Just got an update, 4th day at the shop. None of the technicians can hear the rattle.

I'm going to try to record it with my cellphone or a laptop I guess, and then take it back in and play the recording.

The dealership doesn't have access to a dyno, or they could probably reproduce it immediately.

Jeff M, this buzzing rattle sounds almost like the top of a tin can being spun on a dremel against rough concrete, and it's coming from the passenger side rear end under the vehicle. bzzZZZZEEEE bbzzzzzEEEE.
It *only* happens at 1400 RPMs under heavy throttle. Higher gears stay in this range longer because there isn't enough horsepower to get out of the RPM range very quickly. Even so, the longest it lasts is about 3 seconds.
But that means in 6th gear ever time I accelerate it happens for three seconds, which is long and often in slow moving heavy traffic.

Any thoughts/suggestions?
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Old 10-14-2011, 02:36 PM   #31
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Unfortunately there isn't any documentation that I can see that would provide a fix for these issues at this time. I've been looking to make sure I am as up to date on this as possible and I haven't found anything that would resolve this. Sorry I can't be of more help in this situation.

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Old 10-17-2011, 09:11 AM   #32
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Jeff M, if I have a notary public ride with me and verify the noise, and then deliver notarized documentation to Chevrolet or a dealership, will that be enough proof to get warranty part replacements done when the grinding part finally fails, regardless of warranty period?

That's my main worry. That the buzzing continues the life of the vehicle until, say, the differential or something finally destroys itself outside of the warranty.
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Old 10-17-2011, 01:12 PM   #33
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I'm sorry maldon but I am unsure as to whether notorized documents would be accepted as proof for warranty repairs. I would think it would be up to the dealer to accept that type of evidence but again I am not sure.

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Old 10-17-2011, 01:24 PM   #34
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Maldon and Partyman....GFX bezels
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Old 10-17-2011, 03:17 PM   #35
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I don't have ground effects. Maybe the ones on the tail lights?
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Old 10-17-2011, 03:25 PM   #36
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Also, my buzzing only happens when the clutch is engaged, but I guess anything in the rear end would buzz more loudly if the drivetrain was fully engaged due since the engine would now be fully connected to it.
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Old 10-18-2011, 07:10 AM   #37
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Well...I noticed that one of you guys have GFX. Mine will metallic buzz now and then under the conditions you describe
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Old 10-18-2011, 10:29 AM   #38
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This morning it was colder than usual out, and I had the same pitched buzz when the engine was turning over right as the car started up.
This was in neutral, though, and all other times I get the buzz while driving, it's in gear.

Hrm.

Anyone know if this could be the same sound, or know anything about a buzz at startup when the engine is cold?
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Old 10-21-2011, 01:45 AM   #39
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The technical service bulletin on the first page tells what the problem is and when I tested for this condition I found the rattle. The exhaust didn't change from 2010 to 2011 so this bulletin still applies.

I had the GFX rattle as well, the dealership fixed that by adjusting the bezels so that they didn't rub on the exhaust. I have been chatting with a GM rep and hopefully they will give me a solution prior to me going back to the dealership. We shall see. How ever it gets fixed, I will not be living with it too much longer.
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Old 01-01-2012, 07:03 PM   #40
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Still unable to get this resolved.

Quote:
Originally Posted by Chevrolet Customer Svc View Post
Hollywood74, have you tried speaking with another dealership in regards to this issue? I'm sorry to hear you're having problems this early in the ownership of your vehicle. If you're unable to get this addressed by your dealer let me know and I'll do what I can to assist you.

Jeff Morris, Chevrolet Customer Service
Hi Jeff, As you can see, I am still unable to get this resolved. The problem that I am still having is a strong vibration when rpm's are between 1200 7 1800. Dealerships don't seem willing to fix the issue, and GM customer service will not help unless the dealership says that there is a problem. Both visits to the dealer got me no where. I was told that the vibration is normal. What do i need to do to get this resolved?
Thanks
Russ
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Old 01-02-2012, 12:12 PM   #41
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Currently at this time there isn't a fix but we are working to resolve these issues. When I get better information I will let you all know. I'm sorry for the confusion.

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Old 07-07-2012, 09:35 PM   #42
maldon
 
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I forgot to post an update for this. I finally took it to a different Chevrolet dealership, and after a few tries my service rep was able to reproduce the buzzing with the service manager, who *had* to witness it in order to authorize any warranty replacements. Understandable, but still annoying. It seemed like it was only reproducible after the car was warm and driven 5+ miles.

Anyhow, after that, they replaced both mufflers, and the buzzing was gone. Sweet blissful rumble is all that's left.

I really appreciate the work Reliable Chevrolet did to track this down. So many thanks to them for saving my sanity.
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Old 07-10-2012, 09:32 AM   #43
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Quote:
Originally Posted by maldon View Post
I forgot to post an update for this. I finally took it to a different Chevrolet dealership, and after a few tries my service rep was able to reproduce the buzzing with the service manager, who *had* to witness it in order to authorize any warranty replacements. Understandable, but still annoying. It seemed like it was only reproducible after the car was warm and driven 5+ miles.

Anyhow, after that, they replaced both mufflers, and the buzzing was gone. Sweet blissful rumble is all that's left.

I really appreciate the work Reliable Chevrolet did to track this down. So many thanks to them for saving my sanity.
It is excellent that your dealership was able to get this issue worked out for you! Please let us know if you have any additional questions or comments!

Brandon
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Old 03-21-2013, 09:50 PM   #44
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After seeing this TSP and the tap points, I decided to try it myself. My 2010 with 25K miles sounded more like a low pitch tuning fork. It has a beautiful humming sound, definitely not a rattle, that lasted for at least a few seconds after I tapped with a rubber mallet. I guess there are a few of us out there that don't have this problem, thankfully!
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Old 04-21-2013, 05:19 PM   #45
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Rattling nosie

I here and rattle on my 2010 ss and it seems to get louder
When I accelerate.. Any ideas? I've heard it could be a rod..
NEED HELP ASAP please..
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Old 05-21-2013, 04:19 PM   #46
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Quote:
Originally Posted by Eatcobrasandshitoutvipers View Post
I here and rattle on my 2010 ss and it seems to get louder
When I accelerate.. Any ideas? I've heard it could be a rod..
NEED HELP ASAP please..
Any updates on this concern? I would be more than happy to look into this for you based on the latest status of this situation. Let me know. Here to help!

Kind regards,

William R.
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Old 11-18-2013, 12:56 AM   #47
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Quote:
Originally Posted by Chevrolet Customer Svc View Post
Any updates on this concern? I would be more than happy to look into this for you based on the latest status of this situation. Let me know. Here to help!

Kind regards,

William R.
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I just purchased my 2010 ss with 37k miles. I hear the exhaust rattle at low rpm's. I'm assuming they will not replace my mufflers under warranty?
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Old 11-18-2013, 06:47 PM   #48
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Quote:
Originally Posted by itlylawboy View Post
I just purchased my 2010 ss with 37k miles. I hear the exhaust rattle at low rpm's. I'm assuming they will not replace my mufflers under warranty?
itlylawboy,

Congrats on your Camaro but sorry that you're hearing an exhaust rattle at low RPMs. I'm unable to say whether mufflers being replaced under warranty is a definite because this is contingent on an official diagnosis at a certified GM dealer. If you'd like assistance with that process, feel free to message me privately and we'll proceed.

Kindly,

William R.
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Old 03-31-2014, 12:32 PM   #49
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I purchased my 2011 2SS in May of last year. I complained about the rattling and my dealer said there was memo about insulation missing in the trunk. He said they addressed it but the rattling exists today. My bumper to bumper expired 3/29/2014! Do I have any recourse?
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Old 05-24-2014, 12:38 PM   #50
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Quote:
Originally Posted by Ruebernard View Post
I purchased my 2011 2SS in May of last year. I complained about the rattling and my dealer said there was memo about insulation missing in the trunk. He said they addressed it but the rattling exists today. My bumper to bumper expired 3/29/2014! Do I have any recourse?
bump. I noticed a slight vibration for a while and now it is getting worse. Quite embarrassing I must say... Out of factory warranty but does this count as a recall and they replace anyway?
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