NHTSA Complaint #11132460 — 2017 GMC YUKON XL

WHILE DRIVING AT VARIOUS SPEEDS, THE VEHICLE DASH DISPLAYED NUMEROUS AND RANDOM ERROR MESSAGES: (WORDING MAY NOT BE EXACT) SERVICE FRONT COLLISION SYSTEM. FRONT RADAR BLOCKED. FRONT COLLISION SYSTEM UNAVAILABLE. THESE MESSAGES INDICATED A PROBLEM WITH THE FORWARD COLLISION AVOIDANCE SYSTEM. THE WEATHER ON THE PARTICULAR DAY VARIED. ERRORS OCCURRED AT VARIOUS SPEEDS. THIS HAZARD CAN CAUSE SERIOUS HARM IF THE SENSORS DETECT AN IMMINENT FORWARD CRASH IN ERROR AND APPLY THE BRAKES IN TRAFFIC. THIS DANGEROUS SITUATION IS LIKELY TO RESULT IN SERIOUS PERSONAL INJURY OR DEATH. THE ROOT CAUSE WAS DETERMINED TO BE RELATED TO AN ADDITIONAL FAILURE MODE IDENTIFIED IN THE OILY SUBSTANCE LEAKING FROM THE CONTROL BOX MOUNTED ON THE FRONT WINDSHIELD. THIS OILY SUBSTANCE WAS IDENTIFIED BY THE VEHICLE OWNER AND REPORTED TO THE DEALER.