OUR FAMILY WAS DRIVING FROM COLUMBUS, OHIO TO LOUISVILLE, KY. WE HAD JUST CROSSED THE STATE LINE GOING UP I-75 HILL NEAR FLORANCE. WHEN MY WIFE SAID SHE SEEN SMOKE OUT HER SIDE MIRROR. I LOOKED IN REAR VIEW MIRROR AND SEEN A LITTLE MYSELF. I WAS IN FAST LANE RUNNING SPEED LIMIT, ALL GAUGES SHOWED ALL WAS OK. I PUT TURN SIGNAL ON TO BEGIN FINDING A PLACE TO STOP. OTHER CARS NEAR US BEGAN BLOWING HORNS AND POINTING AT FRONT RIGHT SIDE OF CAR. ONCE WE GOT PULLED OFF SIDE OF ROAD, WE TURNED VEHICLE OFF. I PULLED THE HOOD RELEASE OF OUR 2004 CHEVY TRAILBLAZER. THE FIRE WAS ALREADY FLAMING OUT THE FRONT OF THE HOOD WHERE YOU COULD NOT TOUCH IT TO OPEN THE HOOD UP. FLAMES WERE ALSO VERY BAD ON THE FRONT WHEEL AREA. MY FAMILY EXITED THE VEHICLE AND GOT SAFELY AWAY. IT IS NOW BEING INVESTIGATED BY GM. WAS SUPPOSE TO HEAR A UPDATE BY AUGUST 31ST ON INVESTIGATION. THEY MOVED DATE TO SEPTEMBER 2 WITH NO RESPONSE. I CONTACTED THEM ON SEPTEMBER 6 AND THEY SAID THEY ARE AWAITING PICTURES OF VEHICLE TO BE REVIEWED. THEY SAID THEY WOULD UPDATE ME ON SEPTEMBER 7. THIS VEHICLE WAS PURCHASED NEW AND HAD JUST TURNED 20K MILES. *NM