TL*THE CONTACT OWNS A 2002 CHEVROLET TRAILBLAZER. IN DECEMBER OF 2007, THE HEADLIGHTS STOPPED WORKING. THE CONTACT DISCOVERED BURNT PLASTIC AND HE REPLACED THE SOCKET AND THE BULBS. ON SEPTEMBER 30, 2008, THE FAILURE RECURRED. THE DEALER DIAGNOSED THE FAILURE AS ELECTRICAL; HOWEVER, THEY COULD NOT LOCATE THE FAILURE CODE. THE VEHICLE HAS NOT BEEN REPAIRED. THE FAILURE MILEAGE WAS 90,000 AND CURRENT MILEAGE WAS 106,000.