GMC Yukon XL 1500 Problem Report

GMC Yukon XL 1500 Popping Noise From Muffler Heat Shield

(16 reports)

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.

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. -
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