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I had an exhaust leak on my truck, very small in my opinion,  I took it in and they dealer agreed.

They replace the gaskets between the header and the cat, on both sides.

 

It is weird for this gasket to fail on a truck with 13000 miles. the loaner has the same sound as mine. same 2017 silverado 5.3. with 4200 miles.

 

Has anyone had this issue? other than a defective gasket which might turn in to a recall. I don't see any other reason.

 

the sound came from around my feet between 1000 to 2500 Rpms under load. louder when the truck was cold. but it could be hear with the windows up.

 

 

 

 

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