2022 GMC Sierra fuel/propulsion system problems

“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.”

“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…”

“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.”

“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.”

“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…”

“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.”