TL* THE CONTACT OWNS A 2007 HUMMER H3. WHEN THE CONTACT STARTED THE VEHICLE WITH THE HEATER AND DEFROSTER ACTIVATED, THE CONTACT INTERMITTENTLY SMELLED A BURNING ODOR. THERE WERE NO FLAMES VISIBLE. THE FAILURE BECAME PROGRESSIVELY WORSE AND THE BLOWER MOTOR FAILED PERMANENTLY. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 15V421000 (VISIBILITY) HOWEVER, THE PART NEEDED TO PERFORM THE REPAIR WAS UNAVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT TIME FOR THE RECALL REPAIR. THE APPROXIMATE FAILURE MILEAGE WAS 115,000. VIN TOOL CONFIRMS PARTS NOT AVAILABLE.