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Old 06-16-2009, 01:28 PM   #4
CanadianCamaro

 
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Drives: 2SS/RS IOM - A.K.A. DA ;)
Join Date: Jan 2009
Location: Ontario Canada
Posts: 2,046
It's a loose baffle in one (or both) of the muffler cans. Mine had it too. Sometimes goes away once they heat up. Put it on a hoist and whack each one with your hand and you'll hear it. Dealer will replace under warranty.
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