FAULTY WIRING HARNESS THAT BURNS UNDER THE DASHBOARD/GLOVEBOX ON THE PASSENGER SIDE (FEET AREA). THE HARNESS CONTROLS THE BLOWER MOTOR FAN SPEEDS 1,2,3 SETTING AND HAS A RESISTOR. THE WIRING HARNESS/LOOP BEGINS TO MELT AND SUBSEQUENTLY BURN. MY PASSENGER BROUGHT IT TO MY ATTENTION AFTER IT SINGED HIS SHIN; I UNPLUGGED THE WIRING LOOP PRIOR TO CATCHING ON FIRE. THERE ARE MANY ONLINE COMPLAINTS AT CHEVY COLORADO FORUMS I.E. EDMUNDS ETC. THANK YOU. *TR