Popping Noise From Muffler Heat Shield on Chevrolet Avalanche 1500

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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Average mileage: 97,666 (12,000–160,000)
5 model years affected: 2002, 2003, 2004, 2005, more2006
9 people reported this problem
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Viewing 1 - 2 of 2 problem details
Started rattling and popping around 160,000 miles.
2004 Chevrolet Avalanche 1500 121,000 mi,
Rattles when sitting at drive thru's very annoying!!!