Problem overview
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.
8 people reported this problem
2 commentsChevrolet Avalanche 2500 vehicles with this problem
5 model years affected
Average mileage: 162,562 miles
(125,000 - 200,125)
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