RepairPal's independent, master mechanics track down the best of the best in auto repair. Learn more »
Get the latest advice about your car
Model Year Affected: 2007
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.
Q&A > GMC > 2010 GMC Sierra 1500 Hybrid
Common Problems > GMC Sierra 1500 Hybrid