In August 2023, while driving on the interstate during rush hour, a critical engine component fell out of my vehicle, leaving me stranded in a dangerous situation. The car was towed to the dealership, where I was informed that a piston had fallen off the engine, requiring a full engine replacement. Now, in January 2025, my vehicle has once again failed-?"this time shutting off completely while I was driving on the Selmon Expressway, putting my safety at risk. After being towed to the dealership, I have now been informed that the engine has seized and will not turn, requiring yet another full engine replacement. This is completely unacceptable. As a loyal GMC owner, I have never experienced such catastrophic failures, let alone twice within such a short period. Engine replacements should not be a recurring issue, and I am deeply frustrated by the lack of reliability and the significant financial and safety concerns this has caused.

- Tampa, FL, USA

At approximately 18,000 miles the engine on my brand new GMC seized up while I was taking 4 of my employees Downtown Detroit. The engine stopped as I was merging into 3 lanes of traffic from the left lane. I had to cross 3 lanes during rush hour almost resulting in a major accident. Then I had to wait 2 months to replace the engine. 25,000 miles later, the second engine seized up while I was transporting my father between nursing home facilities. The third engine, I have recently been told only has a 12,000 mile warranty. I have requested that GM give me a 60,000 mile warranty on this 3rd engine and they refuse as it is past 30 days since the 3rd engine was installed. I should be getting a new truck, but I am just asking for a warranty. This is a known problem, which obviously has not been fixed. In both instances, there were no indications of a problem until the engine stopped running. The first time, I had 4 of my employees, which I was responsible for, in my car merging in the left lane with no engine power during rush hour, putting everyone at great risk, including other cars and people. The 2nd time, I had my [XXX] father in transit between nursing home facilities. This obviously was a very stressful event for both of us. Both of the dealerships that replaced the engines confirmed that they have been seeing this same issue in many other GM trucks. I personally know of 3 people that this has happened to. In both cases, I had to wait weeks to replace the engine because of the backlog to order the engine for other people. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Commerce Township, MI, USA

The contact owns a 2022 GMC Sierra 1500. The contact stated while driving at an undisclosed speed, there was a loud knocking sound coming from the engine compartment. The vehicle was driven to the residence. The vehicle was taken to the dealer and was diagnosed with engine failure. The contact was informed that the engine needed to be replaced. The vehicle was not repaired; however, the contact was informed that parts for the engine replacement repair were on backorder. The manufacturer was made aware of the failure and a case was filed. The contact was informed that the repair was covered under warranty. The failure mileage was approximately 60,800.

- San Antonio, TX, USA

I have a 2022 GMC Sierra 1500 AT4 with a 6.2 engine. The truck had roughly 50,000 miles on it when the engine completely stopped working while I was driving on a busy multi lane highway during rush hour. After almost getting hit by multiple vehicles while trying to glide my truck to the side of the highway. I waited 2 hours trying to get my truck towed to a local dealership and the next day was told that my engine completely seized up and my engine needed to be replaced. I waited two months without my truck while it was at the dealership waiting on an engine that was back ordered. They told me it was complete engine failure. They couldn-??t figure out why, all fluids were good yet the engine failed.

- Wesley Chapel , FL, USA

I was driving my vehicle when is started making a loud noise coming from the engine. My vehicle turned off in the middle of road and didn't start again. Putting the safety of the other drivers and my ownsafety at risk.

- Davenport, FL, USA

I currently own a 2022 GMC Sierra with 75823 miles on the vehicle. I purchased the vehicle new from Bill Cramer GMC, and just learned today that the engine has to be rebuilt due to bad lifters, cam shaft damage, and excessive oil consumption. According to the dealership and further research, this is a common issue with the GM 5.3L engine that is currently in my truck. Because the truck is now out of warranty GM will not cover the costly repair. Something has to be done regarding these engines, due to the thousands of people this has affected. According to the sites, no recall has been issued for these engines and its very dangerous to operate because the engine can lock up while driving.

- Panama City Beach, FL, USA

On or around January 27 2025 my 2022 sierra loss power and shut down at night and dropped to 0 rpm. I was close to the house and got pulled home by relative. When I did get it cranked lifters were tapping which was common in the 6.2 but I drained my oil and filter and saw the glitter look. Truck was still tapping after warmed up. Last night I about got hit at an intersection when same thing happened. I felt a jar, and truck went to zero rpm and loss power. Truck said, put in neutral and try again. When I pushed starter had a click. Then I pushed start again and it started smoking. It burnt my starter up, because engine is seized. I saw where there is an investigation on this and I really hope it goes through because that was a scary moment and it is safety concern. Twice the same thing. But now can-??t turn crankshaft, nothing to drive, making payments on a 80,000 truck that is my personal and work vehicle. 92000 miles on my truck and have my oil changed regularly. I-??m stuck between rock and hard place, but will be getting it towed to a dealer somewhere. To here I need a 6.2l engine in my sierra slt. 2 year old truck it is stressful. I know im going to here 10,000 $$$ I don-??t have.

- Bethune , SC, USA

Engine locked up and needs to be replaced out of warranty at 25k miles!

- Faribault, MN, USA

https://gmauthority.com/blog/2025/01/nhtsa-opens-investigation-regarding-gm-6-2l-v8-engine-failures/ I experienced an engine failure, similar to the ones that are currently being investigated by NHTSA on my 2022 GMC Sierra Denali. My safety was put at risk through the engine failure at high speeds on the highway. The engine failed and while driving through mountainous terrain, the vehicle automatically launched into neutral and I had to dodge several passing vehicles to get to a safe place on the side of interstate 40 in western NC. The problem was confirmed by the original dealership that I purchased the vehicle from. Randy Marion GMC in Huntersville NC. There were no warning lamps, messages or other symptoms prior to the incident. It was sudden and without warning.

- Boone, NC, USA

The contact owns a 2022 GMC Sierra 1500. The contact stated while driving at approximately 30 MPH, the vehicle stalled; the vehicle failed to return to normal operation. No warning light was illuminated. The vehicle was towed to a dealer where it was diagnosed that the engine needed to be replaced. The vehicle was repaired. The manufacturer was notified of the failure. The failure mileage was approximately 18,000.

- Long Beach, CA, USA

Engine failure. The engine was replaced once before I bought it at around 17k miles and then I had to replace that one around 44k miles.

- Canfield, OH, USA

Motor seized up while driving, brough to local gmc dealer and they confirmed it is a seized motor and needs to be replaced.

- Duluth, MN, USA

I purchased my 2022 GMC SIERRA XLT in February of 2022. I have had it in the shop 4 times for recalls. They couldn-??t or didn't put an inspection sticker on the truck because I honestly don-??t think it could have passed inspection. The truck sounds like a truck on Transformer when I turn it off breaking town like a robot. On yesterday which was 1/27/2025 while backing up to turn around the truck started dragging in the back like the breaks locking up, the same thing happened while turning into my driveway off a state highway with an 18 wheeler coming. GMC can-??t look at the truck until February 10! This Truck was purchased new and it-??s been nothing but trouble. Electrical system goes in and out Steering assist reduced drive with care, Engine power reduced, park assist on then off and truck making unusual noise. I waited 13 YEARS to finally get another brand new vehicle and this what I ended up with. My last new vehicle was a 2004 Honda Pilot. I had 459,000 miles on the truck no engine or transmission issues. I donated the truck to Goodwill. Therefore, I hope GMC understands my frustration when my daughter-??s 2019 Kia Optima is out performing my 2022 GMC XLT truck. The back breaks are dragging and locking up, it appears the gears are getting stuck and I can-??t back the truck up or go in reverse without the struck staying stuck, then jerking vigorously and problems with the wheel turning to the right the truck get stuck or stall!

- Geismar, LA, USA

Engine locked up while driving down interstate. Found out it-??s the 2nd engine that has been replaced. On its 3rd engine now. GM 6.2L

- Brierfield, AL, USA

Day1: vehicle stalled resulting in warning lights related to the batter. Day2: battery was replaced. Day 3: vehicle was driven less than 30 miles and starting making noise under the hood. vehicle stalled in road and was towed to repair shop/dealership. I then received notice the stater needed to be replace to start the vehicle to diagnose. The vehicle started and it was determined the engine was blown and needed to be replaced.

- Byron Center, MI, USA

Started using oil and dealer said GMC says it can use 2 qts in between oil changes and few months later driving on interstate and quit running got it home and clinging and wouldn-??t start got it to dealer said the engine seized up bearing spun. Took 2 months to get truck back and now afraid it will happen again. GMC should offer a buy back or different year of truck at no cost.

- Owensboro, KY, USA

I was on a hunting trip when my almost brand-new GMC Sierra 6.2L broke down, approximately 20,000 miles on it. The vehicle started making a ticking noise while I was driving out of state, en route to our lodge. Early the next morning the engine light came out and the vehicle came to rest close to a stop sign. I was very fortunate someone was following me in a different vehicle. The vehicle would not start afterward and had to be towed to the closest dealership. Being a new GMC owner and nearly 7 hours away from home and in an unknown area was extremely stressful. The dealership service department was closed on Saturday (the date of the incident) and Sunday. The dealership was less than helpful and did not return my phone calls on an already stressful day. My trip ended on Sunday and I was forced to rent a car at Enterprise. Unfortunately, the Enterprise I contacted did not have a truck and GMC told me that the dealership could not provide a loaner truck. I-??ve needed a truck several times this month, which has caused difficulties for me and others. The vehicle has since been inspected and the service department stated the vehicle needed a new engine. This occurred 21 days ago and there is no end in sight. The service department could not tell me an exact date on when the engine would be shipped to their store.

- Maryville, TN, USA

Engine seized up. This is the second 6.2L engine that this happened to. The first one was a lifter failure and 2000 miles After replacement engine locked up. Brand new engine at 26000 miles. Now at 68000 the new engine seized up with no warning

- Kennedale, TX, USA

While traveling on the highway the engine shut off. No warning, noises or lights where on before. Check engine light came on when the engine shut off. Was able to get off the road on to the shoulder. This was an huge safety concern as I had no way to move the truck. After getting the vehicle to the dealer it was a spun rod bearing. Had 7000 miles on it at the time. Dealer replaced the the parts and had the truck back after three weeks. Metal is oil pan. 1, 2 and 8 rod bearing spun scoring on main bearing and crankshaft. There was no issues with the truck prior. I bought it new.

- Garner, KY, USA

I am on my third 6.2L engine at 80k miles due to engine failure. It is absolutely ridiculous and is a safety issue for sure. It has left me stranded twice. And now GM is giving me a hard time about not wanting to cover it under warranty.

- Newport , AR, USA