Popping Noise From Muffler Heat Shield on Chevrolet Tahoe

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.

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Average mileage: 117,919 (46,000–190,000)
Exhaust & Emissions affected: V8
8 model years affected: 1999, 2000, 2001, 2002, more2003, 2004, 2005, 2006
35 people reported this problem
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Viewing 1 - 14 of 14 problem details
Popping noise on my 04 GMC Yukon after turning it off. Seems to be coming from under, near the rear wheels.
2004 Chevrolet Tahoe 100,000 mi,
loud rattle noise from under the center of the car. when in drive. Seems to lessen when in park. Sounds like hell. Mine became loose from a weld - re-welded and good to go. LOVE MY TAHOE!
2005 Chevrolet Tahoe 140,000 mi,
it has not been fixed. Have continued to drive with loud tattle
loud popping noise voming from muffler
2000 Chevrolet Tahoe 79,000 mi,
Same as above, inconsistent noise underneath.
Mine is doing the same thing. The heat shield is cracked and making terrible rattling noises.
My heat shield also makes noise mostly rattles but does make the popping sound...
Intermittent rattling of the muffler. Took it to a service location numerous times only to have the noise disappear when they tried it. Finally, an adept technician warmed the vehicle and drove it around the block a few times and heard it. Seems that temperature and speed were a factor. They welded it once for me, but it didn't hold for long. Ended up replacing with a magna flow muffler system.
2005 Chevrolet Tahoe 50,000 mi,
Occasionally loud noise heard at low speed. Very annoying.
When I turn off the car there is a popping noise for quite so time.
2004 Chevrolet Tahoe 82,000 mi,
loose heatshield and rattle
2005 Chevrolet Tahoe 122,000 mi,
Vibration noise at low speed; especially when before the car is warmed up
2005 Chevrolet Tahoe 67,500 mi,
I My 2005 Tahoe's also rattles as I accelerate.I notice that while under the vehicle, the shield is very flimsy(prone to vibration right where the exhaust sensor is.I have thought about wedging some exhaust wrap between the body and shield.
rattling noise from cat or heat shield...not sure....putting pressure on the cat with a bar stops the noise.