THE SEAT WARMER IN MY 2001 CHEVY IMPALA OVERHEATED CAUSING 3 LARGE(QUARTER SIZED) BLISTERING BURNS ON MY BACKSIDE. I TURNED IT OFF UPON FEELING THE BURNING, AND LATER IT DID NOT TURN ON AT ALL. MY CHEVY DEALER FIXED THE SEAT WARMERS AND THE REPAIR WAS COVERED UNDER WARRANTY. 18 DAYS LATER THE BLISTERS ARE STILL HEALING. *JB