NHTSA Complaint #11088484 — 2017 GMC CANYON

NOX SENSOR POSITION 2 FAILED, SECOND OCCURRENCE, DIESEL VEHICLE ENTERED LIMP MODE. LIMP MODE IS DANGEROUS AND INDICATED DEF FLUID ISSUE. THIS IS A FALSE POSITIVE (AS DESCRIBED IN MANY PLACES ON THE INTERNET AND BY THE DEALER) AS A RESULT OF THE SENSOR FAILURE. FIRST DEALER DID NOT STOCK THE PART, DEALER 178 MILES AWAY HAD THE PART IN STOCK. LIMP MODE IS A CONTINUED DECREASE IN VEHICLE MAX SPEED. WHILE A FAILURE OF THE EXHAUST SYSTEM IS CRITICAL, IT SHOULD NOT BE ALLOWED TO PLACE AN OWNER AT RISK. BY THE TIME I REACHED THE SECOND DEALER, I HAD 4 MILES UNTIL THE VEHICLE WOULD DEGRADE TO 4MPH. I WAS ASKED TO LEAVE WITHOUT EXECUTION OF A CRITICAL STEP, BECAUSE GM DOCUMENTS DID NOT RECOMMEND THAT STEP AS PART OF THE REPAIR. 2 SCENARIOS EXIST, SENSOR FAILURE WITHOUT LIMP MODE AND FAILURE WITH LIMP MODE. IN LIMP MODE THE VEHICLE CANNOT BE DRIVEN LONG ENOUGH TO RESET THE FAILURE AND GM SHOULD INCLUDE THIS IN THE REMEDIATION. INCREMENTALLY, THE DEALER SHOULD HAVE A PROCESS TO RESET LIMP MODE TO ALLOW TRAVEL WITHOUT THIS MODE UNTIL THE NEXT IGNITION CYCLE. ALSO THIS WOULD BE A PREFERABLE SERVICE FROM ONSTAR. THE LIMP MODE IS GREAT FOR THE CASUAL ISSUE BUT CREATES A RISK TO LIFE AND LIMB FOR TRAVELERS AND SHOULD HAVE LIMITED OVER RIDE CAPABILITY. BEING THE FAILURE HAPPENED ON A MAJOR HIGHWAY, IN A CONSTRUCTION AREA WITH CONCRETE BARRIERS ON EACH SIDE THIS CREATED GREAT STRESS. NO AMERICAN SHOULD OWN A VEHICLE COSTING $41000 THAT LEAVES YOU AT RISK OR STRANDED. THIS IS IRRESPONSIBLE.