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Rattle coming from the back of the truck

  

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I have a 2016 Chevy Silverado 2500 with 74,000 miles.  It has a 6 l gas engine. When I go over a bump into my driveway I've been hearing a rattle/ knocking sound coming from the back. I've done all sorts of things to try to figure it out. I took the tonneau cover off, spare tire, carabiners I have on my hitch but nothing seems to stop it.  I even shook the back of the truck and had my son listen on the side but couldn't really tell where it was coming from.  Any ideas on what else I should look at?

 


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Posted by: @marmot1080

Any ideas on what else I should look at?

Check the exhaust, particularly the heat shields/hangers and even the rear suspension.


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Posted by: @marmot1080

had my son listen on the side

did anyone look underneath?


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