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.
Yukon XL 1500
Average mileage: 130,285 (43,000–215,000)
16 people reported this problem
Viewing 1 - 6 of 6 comments
Heat shield rattle upon acceleration
Shield is popping , cracking etc..
The muffler is making a pinging sound when hot....!!!!!
popping and crackling in the exhaust area
major vibration/rattling noise from muffler heat shield at 1100-1200 rpm only. Makes noise in gear or out of gear when engine/exhaust are hot only.
Popping and pinging noise from exhaust system. Not yet addressed.