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Old 05-01-2012, 05:51 PM   #1
diablo5637
 
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Tambourine Sound???

Ok I'm completely lost and so is my service department on this problem so hopefully someone has an idea on here about it. For the past couple of months once my car is warmed up, a sound almost like a ringing of a tambourine is happening when I hit right around 2900 rpm. It happens in every gear but only happens when the car is moving. I can't push the gas in while in neutral and replicate it. I only have an axle back exhaust and that has been completely checked over by the shop that put it in.

Any insight on this would be greatly appreciated because until it's fixed I can't mod anymore and we all know what that feels like

Thanks in advance!
p.s. It happens right around 11 seconds.

Last edited by diablo5637; 05-01-2012 at 06:16 PM. Reason: Adding a video
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Old 05-01-2012, 06:18 PM   #2
diablo5637
 
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Moderators... I'm not quite sure what happened with the alignment of the post and I'm not sure how to fix it. Sorry
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Old 05-01-2012, 08:19 PM   #3
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I'm sorry to hear about all of this diablo. Unfortunately I wouldn't be able to tell you what it is but let us know what your dealer says if they're able to find it. Hopefully they are but if not I'm here to help in any way I can.

Jeff Morris, Chevrolet Customer Service
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Old 05-02-2012, 07:01 AM   #4
diablo5637
 
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Thanks for responding Jeff,

I took it in on Saturday and went out on a ride with one of the technicians so he could hear it. He said he had no clue what it could be and the service department said they wanted to have it for a full day to be able to give it more attention. So I took it in yesterday morning around 7 and got a call around 4 saying "We checked over everything and we couldn't find anything wrong. Your best bet is to keep a log of when it occurs and bring it back in if it starts happening more frequently." The thing is... It's been occurring every time without fail, after the car warms up, in every single gear at 2900 rpm for the past couple of months. There isn't any logging that I can do.

Don't get me wrong they were very nice and felt very bad that they couldn't figure out what it was. I'm not unhappy with how they treated me it's just... they couldn't figure out what was wrong and I left with the feeling that I was expected to kind of just deal with it because there were no other options. So that's why I turned to the forum hoping that you guys knew something they didn't. Because even though it's apparently not detrimental that they could tell. I don't want to, and shouldn't have to deal with that sound.
Thanks again for responding back to me,
Travis
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Old 05-02-2012, 07:25 AM   #5
SSMickey
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Don't know what the dealership did to try and find it, but the tool to be used is called a chassis ear. It has several microphones that can be placed around the car, engine, chassis, etc, and they can be listened to individually. Best tool I have ever used to find noises in a car. Sounds like that is what it's going to take to zero in on this noise.
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Old 05-02-2012, 09:07 AM   #6
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sounds like a heat shield resonating. Happens sometimes with an aftermarket exhaust. Something could be vibrating against it, or causing it to vibrate.
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