2019 Gmc Canyon Complaints

The engine coolant temperature sensor has failed on my 2019 GMC Canyon. The check engine light is illuminated, the temperature gauge does not register correctly, the air conditioning has been disabled by the vehicle's computer, and the engine cooling fan continues to run after the engine is turned off. These symptoms are consistent with the vehicle entering fail-safe mode due to loss of a valid coolant temperature signal. The problem was confirmed by an independent mechanic who diagnosed a failed coolant temperature sensor. The mechanic attempted to source a replacement part through GMC but was informed the part was unavailable. The reason for the parts unavailability is unknown, though in his experience, it typically means that the manufacturer is stocking up and preparing for a recall This issue appears to be widespread across 2017–2020 GMC Canyon and Chevrolet Colorado V6 trucks based on extensive owner forum documentation. The safety concern is significant: without reliable coola...

Ambient air temperature sensor

Transmission shifting issues. The transmission will shift very slowly (engine revs high and vehicle lurches) when driving the truck each morning. I reported the issue to the dealership within 0ne month of purchasing the truck in 2019 and again in 2024. The dealership stated there is nothing wrong with the transmission. The transmission is now starting to slip at low/moderate speeds when accelerating. The vehicle has less than 50,000 miles.

Formal Complaint to NHTSA: 2019 GMC Canyon Transmission Issue To Whom It May Concern at the National Highway Traffic Safety Administration (NHTSA): I am writing to formally report a recurring and dangerous transmission issue in my 2019 GMC Canyon, and to request that NHTSA open an investigation into why General Motors has not issued a safety recall — despite widespread complaints and technical service bulletins. My vehicle exhibits jerking, hesitation, slipping, and hard shifting — especially during acceleration or when moving from a complete stop. These symptoms are consistent with hundreds of other consumer reports across forums, NHTSA complaints, and class-action lawsuits tied to GM’s 8L45 8-speed automatic transmission. I was quoted approximately $5,700 for a transmission repair and $8,800 for replacement. This problem is not simply an inconvenience or comfort issue. Hesitation and sudden surges in acceleration pose a legitimate safety hazard, especially when merging onto highways,...

The contact owns a 2019 GMC Canyon. The contact stated that while driving at undisclosed speeds and making a right turn, the steering wheel seized. The contact continued to drive, and the steering wheel seized again. There were no warning lights illuminated. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 65,200.