TL* THE CONTACT OWNS A 2015 CHEVROLET SILVERADO 1500. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 40 MPH, A SMELL OF PLASTIC BURNING STARTED. SMOKE EMERGED FROM THE BUS BAR LOCATED AT THE BOTTOM OF THE SLIDING REAR WINDOW. THE SMOKE STOPPED WHEN THE VEHICLE WAS TURNED OFF. THE VEHICLE WAS DRIVEN TO THE DEALER CENTURY CHEVROLET, 6105 WEST 120TH AVENUE, BROOMFIELD, CO 80020, THEY DETERMINED THAT THE REAR WINDOW DEFROSTER FAILED AND NEEDED REPLACEMENT. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE APPROXIMATE FAILURE MILEAGE WAS 80,914.