GMC Canyon stalling problems

Filed Dec 17, 2025 · Fuel system · FL

I own a 2015 GMC Canyon that developed repeated and serious fuel-system and engine problems beginning around 56,000 miles. The vehicle experienced fuel contamination (water in the fuel system), multiple fuel injectors failing and sticking open, repeated misfires across several cylinders, and engine stalling/shutdown while driving. The truck was towed multiple times and repaired repeatedly by an authorized GMC dealership. Repairs included injector replacements, fuel pipe replacement, fuel-system cleaning, and related work. Technician notes show that broader repairs were recommended but not fully authorized, and the same problems continued to return. Despite the dealership later stating the vehicle was repaired, there is no written safety certification, no documented fuel-system integrity testing, and no GM engineering clearance confirming the vehicle is safe to operate. Because of the repeated failures and risk of fire or loss of power, I do not feel the vehicle is safe to drive. I personally paid over $6,000 out of pocket for fuel contamination repairs and spark plug replacement (not including towing), after warranty coverage denied some repairs as “water damage.” The vehicle has been unsafe or inoperable for extended periods. I am reporting this because repeated fuel-system failures and engine shutdown present a serious safety risk and may affect other vehicles of the same model.

Filed Oct 23, 2025 · Steering · WA

Power steering turned off while driving Pulled over cycled the key it came back on Has happened 3 times in two weeks

Filed Nov 19, 2024 · Electrical, Fuel system · FL

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.

Filed Aug 7, 2024 · Lights · WA

Approximately every minute while driving with the headlights on, they will turn off/flicker for a split-second. This makes it seem like I’m flashing my lights at other vehicles, and also makes the lights turn off while driving for a split second which is distracting. This has happened since the vehicle was purchased new and it happens any time the headlights are turned on.

Filed Jul 15, 2024 · Engine · 64,000 miles · CT

The contact owns a 2019 GMC Canyon. The contact stated while driving 60 MPH, the vehicle stalled and failed to restart. There was an abnormal scratching noise detected. The check engine warning light was illuminated. The vehicle was towed to the local dealer, where it was diagnosed and determined that an unknown part had fractured inside the engine. The mechanic informed the contact that the engine needed to be replaced. The contact was informed that there was no warranty coverage on the vehicle. The vehicle was not repaired. The manufacturer was not contacted. The failure mileage was approximately 64,000. The VIN was not available.

Filed Jun 27, 2023 · Driver assistance, Steering · TX

Vehicle Stability Control systems light comes on sporadically and stalls the power steering. In other words, the power steering turns off at any time and dangerously on a highway, when the Vehicle Stability Control lights comes on the dashboard. The first diagnosis (May27, 2023) of the above issue was performed at Green Brooks, a Certified NJ GMC Service Dealership yielded no results from their inspection. A second diagnosis was needed due to the vehicle's malfunctioning danger to me and other drivers on the road. The Certified GMC Service Dealership Ewing Buick/GMC TX diagnosis (June 12, 2023) showed a "STEERING GEAR INTERNAL TORQUE SENSOR" costing two thousand one hundred and eight dollars and fifty cents ($2,108.50) to complete. The codes were C0545 00 stored in DSCM followed by S14849247 requiring Steering Gear Replacement. The total cost including labor cost was two thousand seven hundred and ninety dollars and eighty-eight cents ($2,719.88).

Filed Jun 2, 2023 · Airbags · IN

July 30, 2021 airbag warning - dealer replaced left front impact sensor mileage 33905 March 9, 2022 rough idling and stalling - dealer replaced evap purge solenoid valve mileage 39067 April 20, 2023 airbag warning - dealer replaced right front impact sensor and air bag module mileage 44496

Filed Apr 6, 2023 · Engine · TX

The transmission shudders terribly. It is available for inspection. It is unsafe because while in traffic situations, it doesn't get up to speed correctly. It is as if it can't find the gear, it feels like it is about to stall. It is not dependable to stay at a speed, or increase speed. The dealership said that changing the transmission fluid would help, and it did for a while. The problem came back, we had the fluid changed again. The problem came right back again.

Filed Feb 10, 2023 · Fuel system · TX

High pressure fuel pump broke off while driving on highway causing truck to stall. Stabilitrack warning was activated and Engine Power Reduced message came on dash. Speed was rapidly reduced to 15 mph on the highway and started knocking hard. Mechanic found the pump physically broke and a bolt was sheered off inside of head.

Filed Aug 2, 2021 · Driver assistance, Engine · NY

This is the 2nd time this has happened. The 1st time making a left onto route 23 from route 296 in Windham NY. Almost got T-Boned. Stalled wouldn't start. Waited 5 minutes and it started again. Ran rough then died again thankfully in a more opportune spot. MY car randomly & without warning loses all power and electric and shuts down. The 1st time I had it towed to Matthews GMC (where I purchased 4 pick ups) and they stated it was a NOX sensor and repaired it. Saturday this happened again while driving at 55 MPH and stalled on a blind curve (very scary). I left a complaint on this website to hopefully prevent a fatality. I thought I would recieve a response from you the NTSB but didn't. I went online and noticed there a a number of folks that had the same problem. Do you wait for fatalities before action is taken??