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#1
10-20-2003, 05:56 PM
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Grinding Noise
I have a 2000 Chevy Tahoe and I hear a grinding noise (metallic) that lasts for a second or so usually between 15 and 40 mph. I took it to the dealer and they said it was the heat shield in the muffler. Midas disagrees and said it might be a bearing. Any thoughts or similar experiences?
Also, if it is the heat shield, if I replace the muffler with another one the noise would go away, right?? 
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#2
10-21-2003, 08:36 AM
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Re: Grinding Noise
Heat shields are normally attached to the body and remain on the vehicle if the muffler is removed. Heat shields/other stuff can vibrate as harmonics/ frequency changes as the vehicle speed increase or decreases.
on the other hand...the muffler could have a loose baffle inside. intermitant bearing noise? ...doubtful. jimmymc
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