2022 GMC Sierra 1500 fuel system problems

Filed Oct 26, 2026 · Engine, Fuel system · TX

After the recall was completed for the propulsion update and oil weight of 0-20 to 0-40 the truck started experiencing engine jerking and noise while driving. The MPG decreased significantly after the engine was replaced at 22k miles, driving on the interstate cruise control at 80mph the engine seized and I was almost smashed by a simi-truck. No steering, no power whatsoever. I was pulling on the steering wheel to get the truck off the freeway and out of the way. Fast forward around 70k miles, all the while I could deal with loss of MPG after engine replacement. No problems. Then came the recall and reflashing of the firm/software and a few months later I was making an u-turn when all a sudden the engine made a loud bang and bad tapping noise came from the engine. I could barely make it to the dealership where I bought the truck maybe 2 miles from where it happened. The dealership service center had the truck for a week then told me to come pick it up there is nothing they could do under warranty. All valve lifters except #3 are blown. GMC says the engine is not under warranty and I must pay $17k for a new engine.

Filed Oct 18, 2026 · Fuel system, Transmission · TX

This report shows 4 more new attempts to repair the drop in power, bucking, surging, and lurching that my truck has been doing since May 2026, after the L87 Engine replacement. This issue has caused me to come very close to rear ending a few vehicles, including a Deer Park police officer. It has caused me to run through red lights unexpectedly. The vehicle has had a case open with GM Corp. Customer Care, Case(s) 95259917 (OLD), Case # 108994166 current case (Phone, Instagram). The problems are dangerous because the truck can begin shutting down and feel as if its stopping due to being stuck between gears or maybe torque converter. It happens on the highway at different speeds. It happens in city, stop and go traffic. The lunging forward comes into play with no prior warning. No lights, no messages on the instrument cluster. The dealer had me come in and drive the vehicle to show one of the managers what is happening while I am commuting. It has been confirmed EVERYTIME I was told there is no problem. I am attaching the latest work orders related to the issues after the engine replacement. For the past 6 months this truck is in the shop or stuck in my driveway more than it is driven or used. It is medically necessary that I have transportation available 24/7. I am under the care of several specialists since I was diagnosed and treatment for cancer began. Notice there are TWO work orders NUMBERED "63481" They are attached. ONE the third attempt dated (8-28-26) printed when i picked it up my ADAS was replaced and it has AVISRentCar, I paid for. Second "63481" forth attempt dated (9-15-26) printed when i picked it up after a Transmission relearn AGAIN (duplicate W.O. #) This one has Enterprise Rental I paid for. Now a FIFTH attempt to repair the same issue (9/21-9/29) This time they replaced the transmission valve body. Now, the truck is in the shop AGAIN, a Sixth time for the same problem. No issues found. I tested it again to show them. I am also attaching FTC report

Filed Oct 12, 2026 · Electrical, Fuel system · FL

The Fuel pump modular system failed leaving me unable to start the vehicle and left me stranded in the [XXX] heat for hours. The vehicle only has 57k miles. There was a recall for this specific issue for many GM vehicles but not mine. There was no warning! It has been towed to Sheehan Buick in [XXX] and diagnosed as the Fuel pump Modular system but I am being told it is not covered under the recall. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Oct 8, 2026 · Fuel system · FL

Fuel pump module went out while driving on expressway engine had reduced power maximum speed uphill was 10 mph vehicle drove fine when on flat ground. Extremely unsafe spot to not be able to accelerate.

Filed Sep 12, 2026 · Fuel system · MD

I am filing this complaint regarding a potentially serious safety defect involving my 2022 GMC Sierra 1500 Denali four-wheel-drive with the V8 5.3 engine. The vehicle had approximately 28,786 miles at the time of the incident. While traveling on an interstate highway in heavy traffic, my truck suddenly lost engine power. I was extremely fortunate that I was able to maneuver through traffic and get the vehicle onto the shoulder without being struck by another vehicle. A sudden loss of engine power under these conditions could easily have resulted in a serious or fatal collision. Immediately follow the incident Onstar detected diagnostic trouble code P129F The vehicle was subsequently taken to an authorized GM dealership. The dealership diagnosed the problem and replaced the fuel pump power control module to repair the vehicle. I have since learned that General Motors issued service bulletin 24 –NA-139 concerning this condition. The bulletin specifically includes 2022 GMC Sierra 1500 vehicles and identifies loss of power stalling and DTC P129F among the possible symptoms. GM states the condition may be caused by an internal short in the K111 fuel pump driver control module/fuel pump, power control module. I am particularly concerned that GM has been aware of this potential failure condition since at least 2024. A failure capable of causing a vehicle to suddenly lose engine power while traveling at Internet speeds presents amsafety hazard not only to the occupants of the affected vehicle but also to surrounding motorist. I respectfully request that the federal safety agency review this issue including other owner complaints involving error code P129F, fuel pump power control, module failures, stalling, or sudden loss of power in affected GMC Sierra and related to GMC vehicles and determine whether a safety defect investigation or recall is warranted. Vehicle: 2022 GMC Sierra 1500 Denali four-wheel-drive Engine: 5.3 L V8

Filed Sep 10, 2026 · Fuel system · 31,298 miles · SC

The contact's son owns a 2022 GMC Sierra 1500. While the contact's son was driving at an undisclosed speed, the vehicle stalled and the engine seized. The driver attempted to restart the vehicle, but the vehicle failed to restart. The vehicle was towed to an independent mechanic, where it was diagnosed with a fuel pump drive module failure. The contact was informed that the fuel pump drive module needed to be replaced. The vehicle was repaired. The contact stated that the failure was a known failure with the vehicle. The manufacturer was contacted by phone, and a case was filed. The failure mileage was approximately 31,298.

Filed Aug 31, 2026 · Fuel system, Transmission · NE

My 2022 GMC Sierra started hesitating two weeks ago between the speeds of 17-35 mph. It also hesitates going downhill. When I try to accelerate it hesitates causing a serious safety issue for me driving. I cant trust to move when I need to move across a busy intersection with semi tractor trailers coming at me. I can trust it to tow or haul anything anymore. This is well known and documented problem General Motors has and the company deems it "Normal Operations" which is totally not normal.

Filed Aug 27, 2026 · Fuel system · PA

The Dynamic Fuel Management (DFS) is causing damage to lifters, valves, camshafts, and connecting rods. I received a recall notice from GMC on the GMC app, stating "L88" Engine loss of Propulsion or Related field action: Special coverage N252494003. The connecting rod and/or crankshaft engine components have manufacturing defects that can lead to engine damage and engine failure. My 22' GMC 1500 has just over 30k miles, and issues are starting with the previously mentioned engine parts. A "pico" test was completed at approx 20k miles. Too early and not enough mileage to show the true damage caused by the "DFM" Dynamic Fuel Management.

Filed Aug 7, 2026 · Acceleration, Engine · WV

I was driving to work on 7/20/26 and my vehicle loss engine propulsion , engine failure and unable to restart vehicle and shift gears.

Filed Jul 26, 2026 · Fuel system · GA

While driving enroute to a concert in [XXX]., in the passing lane on [XXX] around [XXX] & just before exit 22(mile marker 21) during rush hour on 7-23 at 5.09pm, my truck abruptly lost power and shut off! It would not start, I could not engage "N" from "P" to attempt to push my truck to the far left side of the highway. This was a "VERY DANGEROUS" situation as I could have been rear ended or much worse! I immediately called SOS/ON STAR for assistance. In the meantime, a police officer and state troopers showed up to divert the traffic around my truck. Eventually, a "HERO" vehicle showed up and at the direction of the police, my truck was "DRAGGED" from the passing lane to the emergency lane. As for getting a tow truck, 1 finally showed up after 5+ hours. I found out the you all have a contract with "AAA", which is the worse when it comes to getting any assistance. I was towed back to [XXX] to South Town GMC dealership & arrived at 11.25pm. It was only the next morning that I received an email from OnStar dated 7-23 at 5.07pm, with an "Advance Diagnostics" advising of a critical issue with the engine & transmission. The code was: P129F, which is the fuel pump and/or module. My truck now sits at the dealership with a dead battery, waiting for them to address. I have heard that there are issues and recalls in certain vehicles with this similar issue. I do have "extended warranty" protection thru Ally that I bought. However, the shock is finding out that the only way to get it into "N" is a special dealer tool that goes into the transmission under my truck! Are you SERIOUS??????? To have no ability to put my truck into "N" is not only unacceptable, but extremely dangerous. Especially with what happened to me & my family. At this point, I am at the mercy of my dealership to find the time to address this issue. Until then, I have no transportation & very upset with the stress of all that happened! INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B