GMC
Sierra 2500
7

Popping Noise From Muffler Heat Shield on GMC Sierra 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: 226,000 (226,000–226,000)
Exhaust & Emissions affected: Gasoline
6 model years affected: 1999, 2000, 2001, 2002, more2003, 2004
7 people reported this problem