Avalanche 1500

Popping Noise From Muffler Heat Shield on Chevrolet Avalanche 1500

Problem Description and Possible Solution

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.

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