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2002 Chevrolet Suburban 2500 Question: What is the buzz/hum in my stock exhaust?

 

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timsimon, 6.0L V8, Vacaville, CA, June 10, 2013, 13:48
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My 02 Suburban has a buzz/hum when i take off from a stop and @2500-3000 rpm. It has 111000 miles on it. A buddy if my said it may be the cats but it sounds metal-on-metal.

So any advice would help, thanks.

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  • Answer #1

    pushrod June 10, 2013, 14:52
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     Master

    Exhaust shield loose maybe? Tap along exhaust pipe front to back with a rubber hammer, listen for noise.

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  • Medium-star Best Answer
    Hal... (see my shops), June 10, 2013, 16:25
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     Master

    Heat shield or hanger may have worked its way loose. If you can pound on the exhaust and get it to rattle inside then you have to replace a couple of items...

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