Avalanche 2500

Popping Noise From Muffler Heat Shield on Chevrolet Avalanche 2500

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: 162,562 (125,000–200,125)
5 model years affected: 2002, 2003, 2004, 2005, more2006
7 people reported this problem
Viewing 1 - 2 of 2 comments
muffler rattlers when idling
after shutting off truck, i hear a pop coming from exaust