Popping Noise From Muffler Heat Shieldon GMC Sierra 2500 HD

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.

RepairPal Verified
Average mileage : 75,750 (53,000–98,500)
Exhaust & EmissionsAffected: = affected_variants_list(car_problem_description)
7 Years Affected: 2001, 2002, 2003, 2004, 2005, 2006, 2007
9 people reported this problem
2 people shared problem details
RATTELING NOISE ON EXCELLERATION. WAS FIXED BY PUTTING A LARGE HOSE CLAMP AROUND THE MUFFLER
my muffler started rattling when I let off the gas
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