BLOWER MOTOR RESISTOR SHORTED OUT AND MELTED AND ALSO MELTED THE WIRING HARNESS AS WELL. THIS OCCURRED WHILE DRIVING DOWN THE HIGHWAY. I SMELLED SMOKE AND THEN SEEN IT COMING OUT FROM UNDER THE DASH ON PASSENGER SIDE. THIS SEEMS TO BE A COMMON PROBLEM SEE LINK. HTTP://WWW.SOLSTICEFORUM.COM/FORUM/F62/HEATER-AC-BLOWER-STOPPED-WORKING-68002/ THERE WAS A RECALL ON THE H3 HUMMER FOR THIS SAME PROBLEM. THE HUMMER AND PONTIACS USE THE SAME PART # FROM FACTORY. HTTP://WWW.SOLSTICEFORUM.COM/FORUM/F11/NEW-RECALL-LOOMING-BLOWER-WIRING-HARNESS-115465/ THESE LINKS OUTLINE MANY PEOPLE THAT HAVE THE SAME ISSUE AS MYSELF. I DONT UNDERSTAND WHY GM KNOWINGLY USES SAME PARTS ON VARIOUS VEHICLES AND ONLY RECALLS ONE IN SPECIFIC. IT IS OBVIOUS THERE IS A PROBLEM. I HOPE THIS WILL