THE WIRING HARNESS TO THE BLOWER MOTOR RESISTOR IN MY 2005 CHEVROLET STARTED SMOKING, FROM EXCESS HEAT WITHIN THE WIRING TO THE HARNESS OR RESISTOR. I HAVE SINCE REPLACED THE HARNESS AND RESISTOR, BUT IT STILL DOES THE SAME THING. HOPEFULLY THIS FAULTY WIRING HARNESS IS THE ONLY ONE IN THESE MODELS. *TR