NHTSA Complaint #10471288 — 2003 CHEVROLET IMPALA

LOW-BEAM HEADLIGHTS HAVE FAILED TO COME ON AND WILL NO LONGER FUNCTION. HIGH-BEAMS AND DAYTIME RUNNING LIGHTS STILL FUNCTION, BUT AT DUSK THE LOW-BEAMS WILL FAIL TO LIGHT; HOWEVER HIGH-BEAMS CAN BE USED INSTEAD CREATING A TRAFFIC HAZARD. I REPLACED THE MULTI-FUNCTION SWITCH WITH A NEW SWITCH, AND REPLACED THE RELAY WITH A KNOWN GOOD WORKING RELAY. THE RELAY WILL STILL WORK AND ACTUATE INDICATING THAT THE RELAY IS NOT THE PROBLEM. I CHECKED THE BULBS AND THEY ARE STILL GOOD, FUSES ARE FINE, 12V POSITIVE POWER IS PRESENT AT THE BULB, BUT THE GROUND IS NOT ACTIVATED ON EITHER SIDE AT ANY TIME. ALL PROBLEMS POINT TO A BAD BODY CONTROL MODULE (BCM). I HAVE CHECKED ONLINE AND THERE ARE MANY MANY COMPLAINTS ABOUT THIS VEHICLE WITH THE SAME PROBLEM. IF THE LOW-BEAM HEADLIGHTS FAIL ON SOMEBODY WHILE THEY ARE DRIVING, IT COULD CAUSE A CRASH AND WITH THAT COMES THE POSSIBILITY OF THE FATALITY OF THE DRIVER AND PASSENGERS. THE BCM COMPUTER IS KNOWN TO CAUSE MANY PROBLEMS WITH STARTING THE VEHICLE, FLASHING THE LIGHTS BOTH INTERIOR AND EXTERIOR AND THESE WILL CAUSE SAFETY ISSUES WITH THE VEHICLE. *TR