DRIVING HOME PARKED TRAILBLAZER IN DRIVEWAY, WENT INTO HOUSE AND HEARD A LOUD "BOOM" SOUND, THEN WENT OUTSIDE TO SEE WHAT THE SOUND WAS AND SEEN SMOKE COMING FROM UNDER THE TRAILBLAZER HOOD, THEN LIFTED HOOD AND SEEN FIRE AND SMOKE, THEN RAN TO GET THE FIRE EXTINGUISHER TO PUT THE FIRE OUT, AND CALLED THE FIRE DEPARTMENT, NOTICED THE TRANSMISSION DIPSTICK WAS OUT ABOUT A FOOT AND THERE WAS TRANS FLUID ALL OVER THE UNDER SIDE OF HOOD, MOTOR, AND THE GROUND. FIRE WAS PUT OUT. THANK YOU *TR