Driving as normal when loss of power occurred due to engine failure (rod issue) Investigation # (PE25001)

- Commerce, MI, USA

Driving down the road dash lit up to push start and truck shifted in to neutral. Pulled off the road and put in park. Engine would not start again. Dash kept lighting up with push start, turning off non essential to preserve battery. Called tow truck. They tried jumping, not the battery. Had to drag the vehicle on the flat bed because could not put in neutral. Drag and drop off the flat bed at the dealer. That was Friday. On Monday got the call the engine had seized. 34k miles Had just returned from a 2k mile trip with construction zones down to one lane and nowhere to pull off. Glad it didn-??t happen there!

- West Branch, MI, USA

Stalled while driving 3 weeks ago, was able to restart. Last Monday it died again on a shorter trop to store, it wouldn't restart. 3 days later, after having to go to Dealership was told engine 6.2L engine is being replaced. Potentially crankshaft bearings failing at 55,315 miles on

- Monroe, GA, USA

Complete engine failure. Replaced engine in February of 2024. Multiple transmission issues. Grill completely peeling off.

- Blackwell , MO, USA

The contact owns a 2022 GMC Sierra 1500. The contact stated that the vehicle failed to immediately start with the message "Battery and Key fob" failure displayed. The battery and key fob were replaced; however, but the failure persisted. The vehicle was taken to the local dealer who diagnosed that the engine was faulty and needed to be replaced. The vehicle was not yet repaired. The manufacturer was notified of the failure. The failure mileage was 36,000. The VIN was not available.

- Lincoln, NE, USA

Truck was going into the shop for general maintenance when the engine stopped working just as we pulled into the dealership. The dealership towed the vehicle in to diagnose the issue and we were told the engine has blown. No warning, nothing. The vehicle went into the shop in December and still GMC cannot offer any lead time on when they can repair the engine.

- Teton Village, WY, USA

Collapsed lifter or camshaft failure

- Jacksonville, FL, USA

The contact owns a 2022 GMC Sierra 1500. The contact stated while driving 70 MPH over a bump in the roadway, there was a huge cloud of white smoke coming from the vehicle and the vehicle started to lose motive power. The check engine warning light was illuminated. The contact pulled over to the side of the roadway and waited for a tow truck to arrive. The contact attempted to start the vehicle again, but the vehicle failed to start. The vehicle was towed to the dealer where it was diagnosed with engine failure due to coolant mixing with the engine oil. The local dealer was contacted; however, the vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 6,607.

- Mosinee, WI, USA

The contact owns a 2022 GMC Sierra 1500. The contact stated that while her husband was driving 30-35 MPH, the vehicle stalled. No warning lights were illuminated. The contact's husband was able to pull over onto the side of the road. The contact's husband attempted to restart the vehicle, and the vehicle failed to restart. The vehicle was towed to the dealer where it was diagnosed and determined that the engine had seized and needed to be replaced. The contact's husband stated that the tow truck driver could not move the gear shifter into neutral(N) when the vehicle was being towed. The vehicle was not repaired. The manufacturer was notified of the failure. The vehicle remained at the dealer and had not been driven since. The failure mileage was 81,000.

- Litchfield Park, AZ, USA

Driving at 55 mph and my 6.2L engine stalled and seized up. Had it towed to GMC dealership and the verified it had seized.

- Lawrenceville, GA, USA

Engine catastrophic failure while under extended warranty. Engine failed in February of 24 however I had told dealership I was having troubles with Engine and shifting also tires from 1st 11000 miles it also kept reduce power on me and basically shut down 3 times in middle of hwy. The 6.2 engine locked up on the mechanic who was test driving it. Took 3 months

- Blackwell , MO, USA

While driving at 65 mph, the engine locked up, the truck went into neutral, and all power was lost. This occurred with no warning at all. The truck was towed 40 miles to a GMC dealership for repairs. GMC dealership has indicated that the engine is permanently locked up and will have to be replaced. The dealership did not provide any explanation as to why the engine locked up.

- Franklin, TN, USA

The contact owns a 2022 GMC Sierra 1500. The contact stated while driving 75 MPH, there was an abnormal squeezing sound coming from the engine compartment, before the vehicle lost motive power. The contact was able to coast to be the dealer, where the vehicle was able to be restarted. The check engine warning light was illuminated. The vehicle was taken to the dealer, who determined that the engine had seized. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 73,000.

- Newalla, OK, USA

On 1 February 2025; I was stuck in the mud, in my pickup. As I was attempting to get out, my truck died. After several attempts to restart my truck; I was towed to my lake camp. Which located less than 100 yards away. Since it was no longer had a current warranty I contacted a mechanic. He arrived the following day and discovered that the engine was -??locked up-??. I had it towed to his shop, and he began to diagnose the engine. He has determined that the crankshaft is broken and 2 rod bearing are spun. He is currently checking for piston borehole damage. If no other damages are found, he will ordered repair parts and repair my engine.

- Deville, LA, USA

While traveling from Florida back to Louisiana on [XXX], I stopped at a store when I came back out the vehicle would not start. I ended up having the battery boosted by a gentleman and then returned to my drive home. I drove from Quincy, Florida where the truck wouldn-??t start to the [XXX] exit in Louisiana. I made 2 other stops but left the vehicle idling at both stops. At the [XXX] exit, I left the vehicle idling while I went inside and the vehicle quit running on its own. After many unsuccessful attempts, I couldn-??t get the vehicle started again. I replaced the battery with no luck. Since it was Sunday night, I was unable to get the vehicle towed so I left the vehicle at the gas station and got a ride back to Baton Rouge so I could borrow a vehicle to get back to Winnfield, LA for work the following morning. My parents went the next morning ([XXX]) and had the mega switch replaced and the truck started right up. My mother then drove the vehicle to Baton Rouge, when she stopped at a traffic light, the truck quit again and she called OnStar to have it towed to Gerry Lane GMC. On [XXX], I received a call from Scott at Gerry Lane stating the vehicle had a lower engine knock and the truck needed a new engine. After multiple phone calls and my parents going to the dealership, mg parents were finally told the oil filter was filled with metal. None of that information was given in the phone call to me. I was simply told it needed a new engine with no explanation of how we got from a truck that wouldn-??t start to needing a new engine. After waiting an extended time frame for them to locate an engine, I was finally able to pickup my truck on [XXX]. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Winnfielf, LA, USA

Engine blown traveling at 35mph vehicle is currently at Lake Chevy GMC in Lewistown Pennsylvania awaiting a new engine, dealer is warrantying engine (so far) awaiting new engine dealer said it will be several weeks before receiving the replacement engine. I-??m aware there-??s an ongoing investigation.. Thought I-??d add my vehicle to the list of engines failures during normal operation.. Vehicle has 43, XXX miles completed its first tire change the day before.

- Lewistown, PA, USA

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