At 28,000 miles and driving at highway speed, the 6.2L engine suddenly seized.

- Commerce, MI, USA

My engine started knocking while on vacation in Indiana (I live in TX) I took it to dealer [XXX] and it was diagnosed with bearing failure. Engine "ordered" on [XXX]. It is currently [XXX] still with no ETA for new engine. Stuck with a small/standard SUV (chevy equinox) for rental in place of my $74,845 Truck which is not a large enough vehicle for my daily usage, but no solutions or help added from GM customer service or dealership. There were no warning signs other that me hearing the noise. My GM app still states no current issues with your vehicle. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Clear Lake Shores, TX, USA

While driving on the interstate, my vehicle started losing speed. I pulled over to the shoulder of the interstate and put in neutral so I could coast further to the exit ramp where I would be in a safer location. My vehicle has 14037 miles on the odometer and has now gone through 2 engines. It has always been serviced by GM.

- Columbus, IN, USA

While idling, I noticed a knocking sound. Dealership found that rockers on both banks not rotating from lifter failure. Dealership replaced both lifter banks. Luckily this was caught early and was corrected for engine failure.

- Eufaula, AL, USA

L87 engine locked up while driving dwon the highway. I have been waiting 7 weeks for a replacement engine.

- Canyon, TX, USA

I was driving my 2023 GMC Sierra pickup (26,634 miles) while towing a trailer. I also had three of my children with me. I was in the fast lane doing approximately 65 miles per hour when the vehicle suddenly started to lose power. The Low Oil Pressure light came on the engine started to make a banging sound. Then the vehicle said to turn it off. We immediately started working our way across three lanes of very busy traffic to get to the side of the road. We were almost hit by several semi-trucks and barely made it to the side of the road as the engine turned off. We could not get the truck to start again. It also would not go into neutral. We were in a very dangerous position due to semi-trucks going by us at a very high rate of speed. I had to call a friend to come get my children because I was fearful, we were going to be hit. An officer luckily came by and assisted us. The engine was replaced with a remanufactured engine by the dealer. The technician who worked on the truck said that the bearings failed causing the engine to fail.

- Covington, KY, USA

The contact owns a 2023 GMC Sierra 1500. The contact stated that while driving on two occasions at 60 MPH, the vehicle stalled. The vehicle was restarted after the first failure but was unable to restart after the second failure. The vehicle was taken to a dealer where it was diagnosed and determined that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 27,750.

- Evansville, IN, USA

During a drive home from dinner, my truck engine completely turned off. I was driving around 25 mph at the time. Car when into neutral and I pulled to the side of the road. Tried to restart the truck, but couldn't not. I had to have the car towed to a dealer. Just got confirmation that my I need a new engine. Then I found that the NHTSA is investigating GMC for this very reason, so I thought I'd file a complaint. * My truck is currently at the dealership, so it is not available for inspection. * While I didn't feel my safety was at risk, If I was driving on a major highway, I may have felt differently. * Yes, problem has been confirmed by a dealership. * Vehicle has not been inspected by anyone other than the dealer. * The check engine light came on at the beginning of the drive, engine failed ~10 min later.

- Whitestone, NY, USA

The truck has 12k miles on it and a week ago a bearing rod in the engine failed without warning. An engine should not have significant issues like this after only 12k miles of use. The truck is now with Williams Buick GMC in Charlotte, NC and waiting for a replacement engine.

- Charlottew, NC, USA

My truck without warning the motor seized and stranded me in the side of a major route. This happened while driving 55mph and lost power and coasted to side of road.

- Epsom , NH, USA

On [XXX], in the middle of a 600 mile road trip from Idaho to Southern Nevada, the engine failed in our 2023 GMC Sierra with just 23,060 miles on the odometer. We stopped for fuel and upon restarting the engine to continue on our trip, the engine was making a harsh metal on metal knocking. We called for a tow instead of driving further. The truck was towed 242 miles to the nearest dealership (GM Roadside refused to do the tow since it was 42 miles outside of their limit) by our AAA membership. The dealership in Las Vegas took 5-1/2 weeks to look at the truck to determine what had failed. They pulled the oil pan and found that the rod bearings for the #1 and #2 rods had failed. If we had continued on, the rods would have seized and would have lost power to the brakes and steering. It's been nearly three months now, and we have no resolution from GM. They have agreed to a "repurchase" on the truck, but we have not been able to get any details on the buy-back for over three weeks. We are still waiting. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Hailey, ID, USA

I was driving my pickup to my farm. I was on a 4 lane divided highway, when i pulled into the left turning lane my pickup just randomly said "press Start/Stop button" so I stupidly did. The vehicle then shutoff or was already shutoff, I am not sure. There was no warning sign, dash lights, or weird engine noises. I would later learn the engine just blew up. The vehicle would not refire and I was forced to sit in the turning lane for 5 hours waiting for a tow truck. The highway was very busy and vehicles were buzzing past me constantly. Not a safe place to be at all! I could not get the vehicle into neutral or remove the parking brake. Multiple highway patrol officers stopped to help me and try to get the vehicle into neutral so we could pull it off the side of the highway to no avail. I crawled underneath the vehicle and disconnected the drive shaft, but then had no way of removing the parking brake. After many hours of waiting a tow truck showed up and my 1 year old pickup was drug onto it skidding the rear tires. The engine had around 12,000 miles. The vehicle went to a GM dealership for 4 weeks and got a new engine installed.

- Williston, ND, USA

Going down beltway at 80mph on November 18 2024 the vehicle lost engine power. I had to drift vehicle across 3 lanes to shoulder and called tow truck to take to dealership. The dealership informed me that the engine had went bad and needed to be replaced. The vehicle had 63k miles on it and was out of warranty and they want me to pay 4k to replace.

- Deale, MD, USA

Truck acted like it would not start several times in a day. Had battery replaced and it still did not fix the issue. Was told by dealership I would need to bring in and let them look at it. Was going to delearship and noticed a llight knocking in my engine then all of a sudden lost power. Was able to coast out of traffic and onto a curb. Truck would not start or even try, yet every light and such still worked. Had taken to dealership and this morning was told it was the engine.

- Campbell, TX, USA

I was driving along the freeway with my family of five. There were no warning lamps. There was an odd noise for about 10 seconds, and then the engine completely seized/locked up. I lost all ability to use the engine. I was able to come across three lanes of traffic, thankfully, without hitting anything without the ability to accelerate. GMC dealership inspected the car the next day. The engine is completely seized up. They are replacing the entire engine, but it has been a month without my car. They still do not have the parts available. We are fortunate. There were no other cars around us and I was able to steer to the Berm Across three lanes. This could-??ve caused a catastrophic accident for my family.

- Blacklick, OH, USA

There was noise in the engine area and after truck stalled

- Rochester, NY, USA

While driving along [XXX] in northern Arkansas the on [XXX] my 2023 GMC Sierra Denali's 6.2 engine suddenly locked up causing us to pull on to the shoulder of the road - nearly causing an accident. The vehicle had 23000 miles on it at the time. We were towing a two horse trailer with one horse aboard. At our expense, we had the vehicle and trailer towed back to St. Louis, MO then to O'Fallon Buick GMC. The dealer replaced the entire engine under warranty with a used rebuilt engine. They have omitted the engine replacement from the vehicle history report in CARFAX. The dealer had handled a number of 6.2 engine failures prior to this one. The vehicle was serviced well within factory guidelines at the dealer. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- St. Louis, MO, USA

While I was driving, the dash screen read "Press start button" and suddenly the vehicle loss engine power and I had to veer to the far right lane. Luckily the cars around me swerved away. I had initially called OnStar, but when the police arrived they told me I couldn't wait for Onstar as I was impeding traffic so they called a local tow truck and they towed it to my house. From my house, OnStar towed it to the GMC dealership. The dealership stated the engine has locked up and needs a whole new engine replacement.

- Pelham, NH, USA

While driving at about 70 mph, the screens in the vehicle went black and the truck had a complete loss of power. The vehicle inadvertently braked to approximately 30 mph and went into limp mode. The check engine warning light came on and the service power steering warning light, the service transmission warning light, the low tire pressure warning light, and the traction control warning light all illuminated. There were also messages displayed on the instrument panel to Service 4-WD and Reduce Acceleration and Drive with Care.-??

- Panama City, FL, USA

I was driving on a rural and narrow 2 lane road with next to no shoulder when my engine started losing power. There were no check engine lights or other indicators of failure until the final 2 seconds. At that point, a message popped up on the dash stating something along the lines that my engine oil was too hot and to idle the engine. 2 seconds later, at 50mph my engine died. That is scary enough, but I was also towing a 5,000lb+ trailer, it was -3F, heavy winds, and I had my 2 dogs with me. Thankfully, I kept my wits about me, remained calm, and made it to the side of the road. As mentioned, there was not much shoulder so this put me in great danger of being hit by careless drivers speeding by. The nearest police officer was an hour away, so I was in quite a predicament. Had this happened to most other people, the narrative would have ended much differently. Come to find out, this is a common issue with these 6.2l engines. So much so, that there is a backorder on the engines due to the high replacement demand. This poses extreme danger not only "in the moment" of failure, but also the environmental dangers/risks users are potentially exposed to, just as I was. This needs to be a recall as this is a substantial and immediate safety issue in my opinion.

- Buffalo, MN, USA