GMC Canyon check engine light comes on

Filed Oct 30, 2026 · Engine · 57,800 miles · KS

The contact owns a 2020 GMC Canyon. While driving 65 MPH, the check engine warning light illuminated. The vehicle was taken to the dealer and DTC: P0024 was retrieved. The dealer determined that the camshaft solenoid bank #2 needed to be replaced. The contact associated the failure with Special Coverage: N232430470 (Camshaft Position Actuator Valve Solenoid - Bank 2 (Left Side) Exhaust); however, the vehicle was not covered under the program. The manufacturer was notified of the failure by phone and suggested that the contact report the issue to the federal safety agency Hotline. The failure mileage was approximately 57,800.

Filed Sep 24, 2026 · Brakes, Driver assistance · CO

Vehicle had brake system failure while driving nearly resulting in two accidents due to an inability to deccelerate. Brake System Failure notification came on screen along with other safety warnings and a check engine light has stayed on since.

Filed Aug 31, 2026 · Brakes, Electrical · 39,000 miles · CA

The contact owns a 2023 GMC Canyon. The contact stated that while driving at approximately 50 MPH, the anti-lock braking system, brake warning light, low oil, low fuel, seat belt warning light, parking brake, temperature gauge, forward collision warning, and various other warning lights and messages illuminated. The contact depressed the brake pedal to the floor; however, the vehicle only decelerated to 15 MPH and failed to come to a complete stop. The instrument panel screen blacked out twice before the vehicle eventually rolled to a stop. The Forward Collision Unavailable warning message and Check Engine light then illuminated. The contact activated the hazard lights and drove at 5 MPH to a nearby parking lot. The contact stated the brakes continued to malfunction, requiring the driver to allow the vehicle to roll to a stop. The dealer was notified of the failure and confirmed there were no open recalls associated with the VIN. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was 39,000.

Filed Aug 7, 2026 · Brakes, Driver assistance · DE

Vehicle alerted driver that ECS and. Rake assist was needed and disabled abs and forward collision while lighting up multiple warning lights on dashboard. Lights eventually turned off leaving a check engine light on. Multiple codes pulled from system using obd2 reader. Communication bus B offline and U0074, U0151, U0447,U0452 all at same time.

Filed Apr 14, 2026 · Electrical, Engine · TX

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 coolant temperature monitoring, there is no assurance the engine is operating within safe thermal limits, and the driver has no warning if overheating occurs. The disabled A/C also creates a safety risk during periods of extreme heat. The vehicle has approximately 60,000 miles. The problem has been present for approximately three months and is ongoing.

Filed Mar 26, 2026 · Acceleration, Electrical · MO

On [XXX], at approximately 4:10 PM, I was at the McDonald’s drive-through located at [XXX] and [XXX] in Springfield, Missouri. I was stopped at the final service window. As I pulled away from the window, I approached a 90-degree left turn heading south. I removed my foot from the accelerator pedal to allow the truck to coast slowly around the corner, as the area is heavily pedestrian and requires caution. While coasting with my foot completely off the gas pedal, the truck suddenly and rapidly began to accelerate on its own. I immediately applied the brakes, and the unintended acceleration stopped right away. At that point, I called Thompson GMC in Springfield, Missouri, at 4:17 PM to report the incident. This was the second time this has occurred. The first incident happened several months ago on [XXX] north of Strafford, Missouri. While navigating a curve, I lifted my foot off the accelerator to coast, and the truck again experienced sudden, hard acceleration. I quickly applied the brakes, and the acceleration stopped immediately. I called Thompson GMC at that time as well. They advised me that I could bring the vehicle in for inspection, but without a check engine light or warning light illuminated, and without the issue occurring while a technician was driving, it might be difficult to diagnose. I did not bring the vehicle in after the first incident. Yesterday, a Thompson GMC employee scheduled an appointment for me to have the truck inspected. No warning lights or check engine lights were illuminated on the dashboard during either incident. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Mar 9, 2026 · Engine · VA

Coolant leak caused by known manufacture defect in upper hose assembly causes coolant to drain and engine to overheat. CEL only comes on when coolant is almost gone. GMC refuses to cover the known issue after 36k miles.

Filed Mar 7, 2026 · Engine · SC

Coolant Leaking at 22K miles, smell of coolant, check engine light on and off 2X's. Coolant evidence on driveway and in engine cabin. Known condition for GM Model. No parts available for replacement. No recall for issue.

Filed Mar 5, 2026 · Driver assistance, Electrical · 9,300 miles · FL

The contact owns a 2023 GMC Canyon. The contact stated while driving at an undisclosed speed, the vehicle failed to accelerate as intended while depressing the accelerator pedal, and the automatic emergency braking (AEB) unexpectedly engaged. The message "Reduce Acceleration Proceed with Caution”, and the check engine warning light was illuminated. The vehicle was turned off and restarted and returned to normal functionality. The contact stated that the vehicle was nearly rear-ended. The vehicle was not taken to the dealer or an independent mechanic. The vehicle was not repaired. The contact related the failure to the federal safety agency Campaign Number: 24V133000 (ELECTRICAL SYSTEM, FORWARD COLLISION AVOIDANCE); however, the VIN was not included. The manufacturer was made aware of the failure. The failure mileage was approximately 9,300.

Filed Feb 27, 2026 · Engine · VA

Upper radiator hose connection to radiator is faulty causing leak of coolant. Yes it is available for inspection upon request. Truck began to run cooling fan at full speed in the middle of winter with no warnings of high heat or low coolant. After two weeks, check engine light finally cut on to indicate low coolant flow. Coolant reservoir was subsequently checked and found to be completely empty. It is apparent this reservoir had been extremely low / empty for at least two weeks with no warnings. Without proper warning and leaking coolant, truck could have overheated. Should this had happened in dead of summer, truck could have very well overheated with no warning. The problem was investigated and confirmed by dealer as leaking coolant at the connection of the upper radiator hose to the radiator. Was quoted $983 to replace the hose. No warning lights appeared until issue had been ongoing for over two weeks. A quick search of "GMC Canyon Upper Radiator Hose" will reveal many identical occurrences of this issue. This is a safety hazard / design flaw that GM is not acknowledging and is putting the burden on the vehicle owners for their own issue.