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Old 08-02-2005, 01:15 PM
silvyman silvyman is offline
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Question 99' silvy question

I have recently noticed that when i give my silvy gas when im ideling or when it is drive there is a rattleing sound coming from under my truck. I drives great and it has excellent power but that sound is really annoying. i only notice it when i am next to another vehicle or next to a building. i am gonna go look at the heat sheil in just a moment and see if it might be hitting my floor. but any help would be much appreciated.
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Old 08-02-2005, 01:20 PM
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Without being there in person, I would say you are on the right track. The heat shield on your cat would be an excellent place to start.
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Old 08-02-2005, 01:36 PM
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i would say it is a heat shield most likely or a muffler clamp that is loose.
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Old 08-02-2005, 07:13 PM
silvyman silvyman is offline
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i found it!!!!!!!

[color=black] yeah i had the question about the 99' silvy with the ratteeling under the truck. i went to check my heat sheild and i knocked around on the exhast pipe and i could hear the noise. I then found out it was coming from my cat. that suck cause my pipes are all welded together so the only way i could take it off is to cut it off and even then i might as well get a new cat cause whats the use of putting the one back on that would probably just eventually fall of . But thanks everyone for your input. Oh yeah if anyone else knows a way i can get the ratteling out of my cat please let me know. and once again thanks for your help.
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Old 08-03-2005, 12:14 AM
93mx6lsv6 93mx6lsv6 is offline
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Knock out the guts of it : ) Although that might be illegal (emissions wise) in your state, and yes it will be very loud. Only because that packing inside of your cat might have broke off a peice, how, I don't know, but thats probably what your hearing. It happens in alot of Jeep Grand Cherokee's as well.
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Old 08-03-2005, 08:19 AM
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Re: 99' silvy question

I say remove them, if you don't have visual inspections. Where I live we have no emission testing at all, so i'm taking mine off as soon as I get my rear o2 sensors turned off so i wont get a SES light.
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Old 08-12-2005, 09:20 AM
jers99z jers99z is offline
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im having the same problem with my 99 Z-71, i had no luck with the heat shields and i broke my y pipe bolts trying to figure out if it was something in my exhaust. please let me know if you have found anything. im taking my truck in this weekend to get it looked at, i'll let you know what they tell me.
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