2023 GMC Canyon Problems

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.

While i was driving on the highway at 85 mph the truck went into limp mode causing the truck to slow down at a dangerous distance. My body was forced forward causing me to lose a portion of control and causing other drivers behind me to slam on their breaks. I pulled over and turned it off for a few minutes then resumed my travel. About 30 minutes later it happened again at 80 mph the exact same way. After taking it to the dealership they said it was a faulty solenoid in the valve body.

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.

Unknown

Coolant leak observed at the upper radiator hose quick-connect fitting. The leak appears to originate from the internal seal at the radiator inlet connection. This issue developed without warning and is consistent with a known defect in the radiator hose seal design used in 2023 GMC Canyon vehicles. Vehicle experienced coolant loss and visible residue at the connection point. No visible external damage to the radiator or hose assembly was observed. GM has issued a Special Coverage program for similar radiator inlet hose seal failures in related vehicles using the same component design. Concern is that this defect may lead to coolant loss and potential engine overheating if not addressed.

The upper radiator hose on some huge percentage of these trucks fail (mine has failed at just over 37K miles). You can check the Colorado Chevy and GMC Canyon forums, youtube, Facebook, etc., et al, and find plenty of instances where this has failed. As this is the cooling system, it can cause the engine to overheat and potentially ruin the engine. The flaw seems to be an engineering issue with the rubber seal they use (instead of a high quality o-ring) to seal the upper hose to the radiator. Additionally, since this can cause engine failure it should be addressed immediately. Instead, my local Chevy dealer, since its not a recall item, said they could schedule a time next week for me to LEAVE the truck and that I am responsible for the repair. This is extremely unfair to the consumer who depends on these vehicles. This should absolutely be a recall item. You can find 1000's of examples online and if you can pull GM repair data, I'm sure you'll find 1000's more.

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.

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.

While i was driving on the highway at 85 mph the truck went into limp mode causing the truck to slow down at a dangerous distance. My body was forced forward causing me to lose a portion of control and causing other drivers behind me to slam on their breaks. I pulled over and turned it off for a few minutes then resumed my travel. About 30 minutes later it happened again at 80 mph the exact same way. After taking it to the dealership they said it was a faulty solenoid in the valve body.

Unknown

The vehicle’s headlights are malfunctioning, creating a safety concern. The issue was reported to the dealership and GMC Customer Care, but it remains unresolved. The dealership offered repair assistance, but GMC Customer Care stated that no additional assistance is available.

The vehicle’s headlights are malfunctioning, creating a safety concern. The issue was reported to the dealership and GMC Customer Care, but it remains unresolved. The dealership offered repair assistance, but GMC Customer Care stated that no additional assistance is available.

While driving I saw smoke and when I pulled over I seen fuel leaking from the gas tank area. Where it was leaking it ignited and the fire department had to put out the fire and the truck is totaled

After each rain or hand car washing, the OEM sunroof has a gurgling sound when driving at speeds above 25 mph. This does not clear for miles, or over time (at least 1 day without water). Water appears to be passing through the seal into the drainage gutter, but not completely draining out through the drains. Its been in service twice to have the drain lines cleared, and the issue remains. This has been present on other car manufacturers as a "wind pressure issue" where the force of driving causes wind pressure to push what water hasn't drained back up into the sunroof. Fix was extending the drain lines at output. GMC unable to repair.

The contact owns a 2023 GMC Canyon. The contact stated while driving at an undisclosed speed, he became aware that the defroster had failed to properly defrost the windshield. The contact also stated that because of the failure, the windshield wipers had failed to function properly after becoming frozen. No warning lights were illuminated. The vehicle was taken to the dealer, who determined that the defroster was operating as intended; however, the design was inadequate to defrost the entire front windshield. The vehicle was not repaired. The manufacturer was notified of the failure, and a case was opened. The failure mileage was 3,000.

The contact owns a 2023 GMC Canyon. The contact stated that upon activating the defroster during cold winter weather, he became aware that the defroster failed to properly defrost the front windshield and that the windshield wipers failed to adequately remove ice debris, potentially compromising windshield visibility. After a visual inspection of the windshield, the contact observed that ice had damaged the windshield wipers. No warning lights were illuminated. The vehicle was not taken to the dealer or an independent mechanic. The vehicle was not repaired. The failure mileage was 3,000. The contact stated the vehicle was taken to the dealership on 12/14/23. They did a full check on the vehicle and could not fix the issue. The dealership also were unable to find any information about a potential fix from the manufacturer.

While driving at 70–75 mph on an interstate, my vehicle suddenly displayed a “Brake Failure” warning and limited speed to 62 mph. Power steering failed completely, and braking became ineffective despite hard pedal pressure. Multiple warnings followed: ABS, engine, and others. I was in heavy traffic with vehicles at full speed. Loss of braking and steering control forced me to coast across lanes to the shoulder, narrowly avoiding collision. My safety and that of others was at extreme risk. After stopping, I turned the vehicle off for ~30 seconds. Upon restart, all systems returned to normal—no warnings or issues. This indicates a transient software malfunction, not mechanical failure. No prior warnings or symptoms occurred. The problem has not been reproduced or confirmed by a dealer/service center. I have not scanned or inspected the vehicle. It has not been examined by the manufacturer, police, or insurance. The vehicle is in my possession and available for inspection upon request.

While driving at 70–75 mph on an interstate, my vehicle suddenly displayed a “Brake Failure” warning and limited speed to 62 mph. Power steering failed completely, and braking became ineffective despite hard pedal pressure. Multiple warnings followed: ABS, engine, and others. I was in heavy traffic with vehicles at full speed. Loss of braking and steering control forced me to coast across lanes to the shoulder, narrowly avoiding collision. My safety and that of others was at extreme risk. After stopping, I turned the vehicle off for ~30 seconds. Upon restart, all systems returned to normal—no warnings or issues. This indicates a transient software malfunction, not mechanical failure. No prior warnings or symptoms occurred. The problem has not been reproduced or confirmed by a dealer/service center. I have not scanned or inspected the vehicle. It has not been examined by the manufacturer, police, or insurance. The vehicle is in my possession and available for inspection upon request.

While driving I saw smoke and when I pulled over I seen fuel leaking from the gas tank area. Where it was leaking it ignited and the fire department had to put out the fire and the truck is totaled

The contact owns a 2023 GMC Canyon. The contact stated while driving at an undisclosed speed, the “Service Safety Restraint System” message was displayed. After restarting the vehicle, the vehicle returned to normal functionality, but the failure became a regular occurrence. The air bag warning light was illuminated. The vehicle was taken to the dealer, who was unable to duplicate the failure. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 150.

Unknown

Subject: Urgent Safety Concern Regarding 2023 GMC Canyon Fuel Pump Module Failure I am writing to express my concerns regarding a significant safety issue I experienced with my 2023 GMC Canyon, which has only 3,000 miles on the odometer. On November 12, 2024, while traveling southbound on Interstate 75 in Florida, my vehicle unexpectedly lost all power. All electronics, including the dashboard and display screens, shut off, and the engine stalled. I was forced to coast to a stop on the shoulder, directly on the bridge section of I-75 over U.S. 301. With less than 12 inches of clearance between my driver’s side and passing traffic, this situation posed a severe risk to my safety. To make matters worse, the tow truck driver was unable to safely and properly secure my vehicle due to the danger presented by the high-speed traffic. My vehicle has now been at the GMC dealership for seven days, and I have been informed that the issue was caused by a faulty fuel pump module. I believe this represents a critical safety defect that warrants immediate attention and possibly a recall. Upon further research, I have found similar reports of fuel pump module failures in online forums, indicating that this may be a widespread issue affecting other owners across the country. In addition, when the tow truck dropped my vehicle off at the GMC dealership, after reading the engine codes the dealership found 18 active engine codes. I feel as if this is a possible known issue and I should have been informed when purchasing the vehicle. I kindly request your assistance in addressing this matter. I urge GMC to investigate the extent of this defect and take appropriate action to ensure the safety of all affected vehicles and their drivers. Thank you for your prompt attention to this urgent matter. Please let me know how GMC plans to proceed. I am available to provide additional information or documentation if needed.