GMC Canyon fuel pump problems

Filed Mar 24, 2025 · Electrical, Engine · KS

The Passlock System intermittently fails and prevents the fuel pump from pumping fuel to the engine. Even after paying GMC to repair the truck, the problem persists.

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 Jun 6, 2024 · Body, Fuel system · NV

Major potential for deadly fire or explosion. Fuel tank strapped failed after forward strap bolt fell out of threaded cross member where fastened in frame. The failure led to the fuel tank hanging inches off the ground on the freeway stressing fuel pump lines to forward upper tank. Metal grinding noises heard to prompt roadside inspection confirming hanging, unsecured tank full of 26gal of diesel. The tank wedged the fuel tank strap between plastic tank and drive shaft (propeller shaft) with heat and potentially spark as the the metal strap ground into the drive shaft marring and striating the durable metal. Heat and plastic melts, heat and spark with diesel combusts..in addition to risking of dragging tank at highway speed rupturing tank. Upon service at the dealer, mechanic observed the rear bolt to fuel strap was also loose and needed to be secured. GMC Protection Plan denied compensation for coverage as they do not cover "bolts, fuel straps, or manufacturer defects" under advertised "Bumper to Bumper" GMC Protection Plan marketed by GMC dealerships as protection for all non-wearable parts. No warning indicators appeared. My dog was in the truck bed in a camper shell directly above the potentially massive fire or explosion, this could have been catastrophic if it had been ignored. Additionally I was in northern California and southern Oregon when issue presented- potentially causing a major forest fire incident. While my outcome was fortunate in terms of safety, this could claim lives and even massive incidental loss of property. Vehicle has been inspected by local dealer and GM notified, hoping to receive coverage for damaged parts. Interestingly, there was previously a GM recall involving forward fuel strap dislodging and wearing into drive shaft on previous years of GM vehicles. No notable corrosion observed, bolts in question are high on frame secured to protected cross members, occurred at approximately 75K miles. I have photos on another device, if needed.

Filed Feb 4, 2024 · Engine · NC

At approximately 92k miles the diesel High Pressure Fuel Pump (HPFP) failed, all internal seals were disintegrated (technician's verbage). This is apparently a common problem (but no recall was ever issued), which can lead to premature engine failure due to sending foreign material into the engine. This pump was replaced, however the new pump failed, after 2 days, and required replacement again, May 2023. The total cost for this was $6200. At 100,450 miles my engine blew up while driving, 01 Feb 2024. There is a very good chance that when the HPFP pump had failed, 10 months earlier, it in fact send foreign material into the engines cylinders which might have led up to this catastrophic failure. Fortunately, I was on a rural street travelling at about 20 miles an hour, and not on the highway travelling at 70 miles an hour, like I was 10 minutes before this happened. When the engine blew it sent pieces of cast iron flying out the bottom of the truck, on a highway this could have seriously damaged vehicles travelling behind me. When it blew I also lost all 'propulsion', the truck immediately began coasting to a stop, had this happened at high speeds it would have been extremely dangerous because without the engine running the brakes lose pressure, plus the oil leaking out could have caused a loss of traction. From what I have found, while researching online, these 2.8l diesel engines have a fairly high failure rate (often being referred to as "a bomb just waiting to explode"), especially the HPFP, which might be part of the reason the General Motors discontinued using this engine in 2022. I feel that a recall should be done on all current 2.8l Duramax engines to do a complete inspection and replace all suspect components, as well as to reimburse those of us who were placed in harms way when our engines blew up on the road, due to GM's neglect.

Filed Nov 3, 2023 · Fuel system · TX

The high pressure fuel pump broke twice within a 6 month period. The first time, I was traveling at 70 mph in the middle of 100 degree weather in Texas. When I took it to the shop, the mechanic mentioned that the bolt broke inside of the engine and caused the high pressure fuel pump to break and dump gasoline everywhere. It was repaired by adding a new pump and fuel line. After driving it for 5 months, the same issue happened again while driving 30 mph. My safety was put at risk since it was large amounts of gasoline that it was throwing which could have easily caused a explosion/fire. The warning message was a check engine light and the truck going into limp mode. From my research, this exact issue was a recall for the 2018 version of the truck.

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 Sep 7, 2021 · Fuel system · TX

I have a fuel leak coming from the top of the fuel tank and running down the side of the tank. The leak occurs when the vehicle is running so it's appears to be coming from the high pressure fuel line or top of the fuel pump. It appears to be exactly what is described in the federal safety agency Campaign Number 18V358000 and in GMC Recall 18188 however GMC Customer Support told me recall 18188 only applies to the 2018 year model and not my 2017. When I search for recalls on the federal safety agency by VIN it tells me 0 unrepaired Recalls. My wife and I both smelled gasoline Friday afternoon when we returned from a trip. We have not driven the vehicle since. I started the vehicle and let it idle in our driveway and after a couple of minutes fuel began to leak and run down the side of the gas tank.

Filed Jun 10, 2021 · Fuel system · PA

No accident to report. I wasn’t aware of the problem with the High Pressure Fuel Pump intel a week later when the noise got louder, at first I figure it was the belt drive that needed check do to it sitting in the lot do to not being moved a lot. I then took it back to where the Vehicle originally came from they where able to identified the problem quickly to do them knowing already that the truck had that problem but never went to fix the problem or to take time to figure the problem out.

Filed Nov 11, 2020 · Fuel system · 54,856 miles · NY

I was driving approx. 65 MPH in heavy traffic on the new york state thruway when I lost all power to my truck and was barely able to manuever off the road. I had my truck towed to my mechanic & was told that it was the fuel pump flow control module. Recall no. 08411 2009 gmc canyons were recalled because of this problem. The recall stated that the fuel system control modules have a condition in which an adhesive separation of the rtv seal between the seal and the housing may allow water to seep into the module. Water in the module could cause a short, illumination of the service engine soon light (which was on in my truck). Also the engine may be hard to start, may not start or may stall. If the vehicle stalls while it is moving, a crash may occur! This happened to me but I was fortunate enough to not crash and die. Like others my truck did not fall within the VIN #s. Obviously there was a problem with this part. My truck had the problems stated in the recall and this was confirmed by my mechanic & dealership. However, gmc denied the reimbursement because it was not within the recalled VIN#s. Gmc was not broad enough with their recall!! I'm attaching a photo of the module and you can clearly see the corrosion .

Filed Oct 9, 2017 · Fuel system · 13,000 miles · IL

My 215 extended cab, long bed gmc canyon slt has 13,000 miles and no accidents or hard driving (almost exclusively driven on the road) with some short hauling of loads locally (1500 lbs or less). No major work has been done to the engine or transmission. Today (9 oct 17), I was taking a short drive to home depot from my house (~6 mi), almost immediately I began to smell a strong odor of gasoline (travelled half a block)...I had just driven the truck on friday to work and smelled no odor, so I thought it must be a vehicle in front of me. But the odor persisted and was worst waiting at stoplights. I smelled gas again on the way back home and new it must be my truck. After I parked I popped the hood with the engine running and smelled no gas, upon returning to the cab to shut the engine off, I smelled strong gas again, and looked down under my truck and saw gas slowly dripping on the driveway. I shut the truck off and the gas continued to stream slowly down the side of the tank - it appears to be originating from the where the fuel lines connect to the in-tank fuel pump on top of the fuel tank. I could reach the top of the filler tube with my hand and it was dry, when I removed the fuel cap, there was no pressure so the fuel must be coming from the fuel feed line or the return line connections. After a few minutes with the engine off the leak stopped. The tank was not overflowing because it was only half full. I plan to have the vehicle towed to the dealer in st louis for repairs. I thought the lines might have been chewed by an animal (squirrel), but the lines are steel. I will find out more from the dealer once it is repaired.