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Rattling and Grinding noise when I accelerate

Block36
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Block36 Enthusiast

Block36

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I have a 2017 Silverado with almost 17,000 miles on it. I recently noticed a rattling/grinding noise when I accelerate, I think it’s the heat shield but I’m not sure why this would already be happening on such a low mileage truck. Also I can’t figure out the source of the problem does anyone have any solutions?

JimCost2014 Senior Enthusiast

JimCost2014

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Just guesses, rock trapped in the heat shield casing, or maybe truck is in AUTO, or 4WD. 

dieselfan1 Senior Enthusiast

dieselfan1

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I have a heat shield rattle too. Only when it's cold. I'm looking for a solution for that too.

Sent from my SM-G991U using Tapatalk

Block36 Enthusiast

Block36

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3 hours ago, JimCost2014 said:

Just guesses, rock trapped in the heat shield casing, or maybe truck is in AUTO, or 4WD. 

I always keep it in 2WD unless the road conditions are bad

CamGTP Senior Enthusiast

CamGTP

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The exhaust flapper valve could be making noise too. You could metal wire that thing open to see if the noise stops.

  • 3 weeks later...

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