TL*THE CONTACT OWNS A 2003 CHEVROLET TRAILBLAZER. THE CONTACT STATED THAT WHILE DRIVING AT AN UNKNOWN SPEED, A BURNING ODOR WAS PRESENT INSIDE THE VEHICLE. THE CONTACT DIAGNOSED THAT A FAILED ELECTRICAL WIRING ATTACHED TO THE HEATER BLOWER CAUSED THE FAILURE. THE VEHICLE WAS REPAIRED BY THE CONTACT ON MULTIPLE OCCASIONS BUT THE FAILURE RECURRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 80,000.