MY SEAT HEATER MALFUNCTIONED, BURNING A HOLE IN MY SEAT BACKREST, AND BURNING A HOLE IN MY JACKET! 30 SECONDS AFTER LEAVING MY HOME, DRIVING ON A RESIDENTIAL STREET, I SUDDENLY FELT A SHARP POKING IN MY BACK. WHEN I REACHED BACK I WAS SHOCKED TO FEEL THE SEAT BURNING AND A HOLE IN THE SEAT! I REACTED IMMEDIATELY, TURNING OFF THE SEAT HEATER AND PULLING OVER. MY CAR HAD SMOKE AND SMELLED OF BURNING PLASTIC. I LOOK AT THE BACK OF MY DRIVERS SEAT AND THERE WAS A HOLE IN THE SEAT WHERE IT BURNED STRAIGHT THROUGH. AND WHEN I TOOK OFF MY JACKET I FOUND A HOLE THERE AS WELL WHERE THE SEAT BURNED THROUGH IT AS WELL. I HAD A SMALL BURN, BUT IT WAS ONLY MINOR. IT WAS A DISTURBING SITUATION THAT COULD HAVE BEEN WORSE IF I DIDN'T REACT IMMEDIATELY OR WAS DRIVING ON THE HIGHWAY. TODAY I TOOK IT INTO MY LOCAL GMC DEALER WHO DIDN'T SEEM VERY CONCERNED AND LET ME KNOW IT WOULD BE EXPENSIVE TO GET IF FIXED. I DECLINED THE SERVICE AT THIS TIME. I THEN CALLED GMC CUSTOMER SERVICE WHO DOCUMENTED MY SITUATION, BUT ALSO DIDN'T SEEM CONCERNED. I WOULD HAVE HOPED GMC WOULD HAVE WANTED TO AT LEAST DIAGNOSE ROOT CAUSE TO ENSURE THERE IS NOT A LARGER PROBLEM ON THEIR HANDS. I AM NOT LOOKING FOR A PAYDAY HERE. I WANT TO MAKE SURE THIS DOESN'T HAPPEN TO OTHERS AT A TIME THAT IT COULD CAUSE A MORE SERIOUS ACCIDENT OR INJURY.