GMC Yukon XL 1500 Problem Report
GMC Yukon XL 1500 Popping Noise From Muffler Heat Shield
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 - Visitor
Shield is popping , cracking etc.. - Visitor
The muffler is making a pinging sound when hot....!!!!! - Visitor
popping and crackling in the exhaust area - Visitor
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. - Visitor
Popping and pinging noise from exhaust system. Not yet addressed. - Visitor
The steering may develop a clunk type noise from the upper intermediate steering shaft. O...
One or more heater & AC (HVAC) temperature and/or air delivery mode door actuator may fail,...
the driver side heated seat switches work correctly. When the passenger side heated switch(s)...
I've reset actuators and it blows heat out of front for 2seconds then blows cold air new water...