Problem Reports
Chevrolet Silverado 2500 HD
Report: Popping Noise From Muffler Heat Shield
Chevrolet Silverado 2500 HD Problem
Model Years Affected: 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
Exhaust & Emissions Affected: Gasoline
Average Mileage: 105,525 mi (12,000 mi - 204,000 mi)
The muffler heat shield may become loose on the muffler causing a rattle or popping noise. Our technicians tell us there is a kit available from GM to correct this problem.
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Report #1Visitor, 2001 Chevrolet Silverado 2500 HD, 200,000 mi
The heat shield on top of the muffler has come loose at one corner and now makes an annoying rattle with the engine at an idle. While cruising it usually goes away, however can still be heard at some RPMs.
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Report #2Visitor, 2005 Chevrolet Silverado 2500 HD, 139,000 mi
Only makes the noise when someone is riding in the rear seat
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Report #3Visitor, 2003 Chevrolet Silverado 2500 HD, 123,800 mi
Rattling muffler heat shield
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Report #4Visitor, 2004 Chevrolet Silverado 2500 HD, 137,000 mi
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Report #5Visitor, 2002 Chevrolet Silverado 2500 HD, 108,000 mi
Muffler seems to hum, sounds like a faint train when truck is started. After it warms up, sound goes away.
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Report #6Visitor, 2004 Chevrolet Silverado 2500 HD
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Report #7Visitor, 2003 Chevrolet Silverado 2500 HD, 70,000 mi
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Report #8Visitor, 2005 Chevrolet Silverado 2500 HD, 67,500 mi
"vibration" type rattle at around 2200 rpms. The truck has to be under a load meaning in gear. Just revving the engine, in park, will not recreate the noise.
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Report #9Visitor, 2001 Chevrolet Silverado 2500 HD, 204,000 mi
Makes a rattling at both an idle and while driving. Doesn't sound good but doesn't affect performance either.
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Report #10Visitor, 2008 Chevrolet Silverado 2500 HD, 12,000 mi
Tinny rattling sound when truck in gear under load, doesnt do it idling. Dealers said it was rocks in heat shield but i know this to be not true. Dealer said noise is harmless but it is very annoying.
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Report #11svasquez6, 2002 Chevrolet Silverado 2500 HD, 80,000 mi
RookieFabricated new shield with better material.
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Report #12fxdwg04, 2005 Chevrolet Silverado 2500 HD, 60,000 mi
RookieI have a rattling sound that comes from my heat shield, after the truck is warmed up it goes away. I have yet to have it repaired because it only does it when it's cold and I first start it.
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Report #13Visitor, 2001 Chevrolet Silverado 2500 HD
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Report #14Visitor, 2007 Chevrolet Silverado 2500 HD, 65,000 mi
been driving with the rattle. 162,000 now still rattles lol
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