Engine seized it won-??t crank we swapped the alternator 2 times the battery once the and the starter once we also swapped the battery chip 3 times and it would turn off out of no where. We thought it was because of the miles but it was working fine. And took care of it nicely. We took it to a dealership and they told us that it needed a new motor because it was seized. But before that it would start up and turn off after 15 minutes. We took it somewhere else in a tow truck and they told us that the engine was seized.

- Thornton, CO, USA

On Jan 7, 2024, we went to Walmart to shop (DeRidder, LA). The truck was running normal. All gauges were normal and the reason I can say this is because our truck broke down in 2023, so we have a habit of checking them when we start the truck before driving and during driving periodically. When leaving Walmart we were at the red light and the truck just stopped. A message came on and said to shift into Neutral, which we did. The truck then died and would not stop. Pushed it into the parking lot and had it towed to Billy Navarre Chevrolet, Lake Charles, LA. After they looked at the truck on Jan 9, they said the engine was seized and we needed a new one. They couldn't say why. They said that would be figured out when the old motor was shipped back. After putting in the new motor, the POC at the dealership called and said we needed a new water pump that the one he took off was bad. They insinuated that was the cause of the engine seizing. However this wasn't determined until they went to put the old one on. If the water pump failed, we believe it should have started showing engine overheat and there was no such thing.

- Deridder, LA, USA

Complete engine failure. Absolutely insane. All lights on dash, engine seized while driving!!!!!!!!!!!!!! Unbelievable that GMC keeps making us fix issues and pay for it! They won't cover the cost. This has been happening too much and putting my family at risk!

- Bradenton, FL, USA

Engine failure- sent in old engine as a core piston broke off the rod causing the engine to seize replacing with reman engine from

- Stow, OH, USA

Driving home on a rural two-lane road the engine started make a load banging noise on the drivers side, than it started to skip and not running on eight cylinders. it than lost oil pressure.

- Jupiter, FL, USA

I was driving down the highway with my teen daughter heading to a hockey tournament in Michigan. We live in Illinois. While in Michigan on the highway driving around 80 mph, I went to pass a vehicle and several service warning lights starting flashing on the dashboard. The ones that flashed were: Service ESC, Service Parking Break, Steering Assist is Reduced Drive with Care. At the time, the engine started making rattling noises and sounded rough. I could feel there was a problem right away. I carefully pulled over and turned the truck off. I waited a few minutes and then turned the truck back on. The service warning lights were still on and the engine was still running and sounding rough. I tried turning it off and on again but the same problem persisted. I then drove the truck about one mile to the next exit just to get off the highway. I was doing about 45mph during this time. I then pulled into a parking lot and contacted On Star to diagnosis the vehicle. They diagnosed a P300 code and said it was an engine misfire. I then found a local repair show and drove another 2 miles to get there. They looked at it for an hour and said they could not help me. They were also getting the cylinder misfire code. I had the vehicle towed to a dealership that same day. I had to rent a car to return back to Illinois with my daughter. After a week and a half, the dealer started looking into the issue. They diagnosed a lifter failure and said a new engine was needed. We purchased the new engine for $10,490 and the dealer installed it. Three weeks later, the vehicle was ready and we had to drive to Michigan to pick it up. I-??ve reached out to GM and they just apologized and offered us 15,000 points in our GM account. We declined. We asked for financial assistance and they also declined and said it was out of warranty and it-??s our responsibility to pay for all costs.

- Saint Charles, IL, USA

The contact owns a 2019 GMC Sierra 1500. The contact stated that while driving approximately 25 MPH, there was a ticking sound coming from the engine compartment. The contact pulled over to the side of the road where the engine seized. There were no warning lights illuminated. The vehicle was towed to the dealer who diagnosed that the engine had seized and needed to be repaired. The engine was rebuilt. The manufacturer was made aware of the failure. The failure mileage was 114,660.

- Elizabeth, TN, USA

The contact owned a 2019 GMC Sierra 1500. The contact stated that while driving 25 MPH, there was an abnormal sound coming from the rear of the vehicle before the vehicle jerked forward. There was no warning light illuminated. The contact was able to pull over on the side of the road. The contact also stated that the radio would turn on, but there was no image on the screen. The contact took the vehicle to the dealer; however, no cause for the failure was found. The vehicle was not diagnosed nor repaired. The manufacturer was made aware of the failure and informed the contact that the vehicle was no longer covered under an undisclosed Customer Satisfaction Program. The contact stated that the abnormal sounds and failure persisted, and the manufacturer was contacted again. The vehicle was taken to the dealer and was diagnosed with a misfire and that the brake lights needed to be replaced. The vehicle was not repaired. The failure mileage was approximately 42,000.

- San Mateo, CA, USA

The truck engine experienced catastrophic failure while driving at 30 MPH. There was no warning or dashboard indication problem prior to the failure. Loud ticking noises were coming from the engine compartment just before full power loss while driving. The vehicle was towed to an independent mechanic. The mechanics found bent valves, damaged pistons and connecting rods. The mechanic replaced the the engine with a GM Longblock. The cost of this repair was just over $10,000.

- Murrysville, PA, USA

Engine has a bearing failure. Just purchased the truck it started to tick so I was being proactive stopped driving the the truck to prevent lock up.

- Jacksonville, NC, USA

While driving the vehicle, had a sudden -??thud-?? from the engine compartment and immediately started getting error messages on the dashboard. When the codes were pulled, it said a misfire from cylinder number 8. The initial shop it was taken to was unable to diagnose the problem and referred me to the dealership. Upon inspection at the dealership, they stated that the camshaft and all the lifters needed to be replaced. The vehicle is still at the dealership waiting for this to be done. Upon doing some research, I have found that lifter issues are a very common occurrence in these vehicles. I was reading this morning about the investigation that the NHTSA has started into issues with the L87 engine, which my vehicle has. If the investigation is concentrated on another issue, I would recommend that the lifter issue gets looked into as well. There is no reason that a vehicle with just over 100,000 miles and has had all the oil changes done on time, should suffer a failure like this that costs thousands so dollars to fix. I apologize for not including videos of the issue, I can-??t save the ones that the dealership took. Please feel free to contact me if you need any further information or if I can be of further assistance. Thank you.

- Carson City, NV, USA

So August 29, 2023, at 46,000 miles, my engine failed completely with no warning or anything, while driving to work, was at the dealership until October 4th. Then December 10th, 2024 with 83,000 miles my engine failed again while my little brother and I were driving home late that night, on the highway at 70mph, suddenly losing power, causing us to be stranded on the side of the highway at 2am. Has been at the dealership since December 11th, with no eta in sight, and we're at 36 days and counting. A spac case was opened to escalate getting a part. This truck has been a problem and I want to get rid of it as its a safety hazard to myself, family members, and other on the road. GM customer service has also been giving me a runaround as well.

- Davison, MI, USA

My 2019 GMC Sierra AT4 - Driving home from work on the highway car lost sudden power, All engine notifications appeared on dash and a very loud screeching sound happened. Was able to pull it onto the side of the road barely. Diagnosis from nearby shop was a lifter failure in cylinder 5 causing metal shavings to lock crank up. Total engine replacement. Car has 122,000 miles and every oil change done at 3,000 miles by GMC service technician since new and documented. GMC offered nothing when notified about the issue.

- Bixby, OK, USA

Engine failure with no prior warning 11/21/2023. We were on the highway. Truck made some noises and hesitated and stalled within 2 minutes. Thankfully, there was an off ramp and we were able to roll into a gas station. Had it towed to a GMC dealer. GMC dealer confirmed engine was blown. Dealer confirmed it's a known issue.

- Atlantic Beach, FL, USA

I was driving and my vehicle started to give me warnings to pull over due to low oil. When I safely pulled over and check. the engine oil cooling line was detached from crimp joint and leaked all the oil. Called the tow truck and took the truck to the dealer (Charles hardy chevrolet in Dallas GA) And they telling me that the engine is locked and it need to be replaced. There is a recall for the part but they telling me that my vin number is not part of it. Even though is exactly what the recall said it would happen

- Dallas, GA, USA

I have a 2019 gmc sierra 1500 elevation. The dash indicated low oil with 60lbs of oil pressure. I stop park my vehicle and see there is a puddle of oil underneath my truck. It appears to be leaking (extremely high flow rate) from the oil cooler lines where the rubber has given way from the metal crimping. Apparently after calling the dealership and reading online there isn't any type of recal for this issue even tho there is a Customer Satisfaction Program N212326940 implemented for Alaska and Canada due to the cold weather climate causing the failure. I live in western Pennsylvania and currently had a cold snap of 11?F. The dealership wants me to pay out of pocket and take my vehicle in to get diagnosed for service, which also means paying to have it towed to the dealership since it is un-drivable. Then pay for the very obvious service and file to see if I can be potentially reimbursed. This vehicle has less than 70,000 miles on it and is outside of the warranty. However this is a reported common issue online and even through the service department in Zelienople Pennsylvania because the tech. Told me they have the parts in stock because they do alot of them when I was inquiring into the issue.

- Beaver Falls, PA, USA

While driving the transmission lurches forward when I give it gas after slowing down or when I come to a complete stop. Also it makes a shuddering type noise randomly when driving and it feels like the truck is about to shut off. These issues happen on multiple occasions.

- Buford , GA, USA

Oil line separates causing massive oil leak causing engine to fail

- Francestown, NH, USA

2019 GMC SIERRA 1500, Fuel Injectors. This was a recall back in April of 2021. My vin is not on the recall list but am having the same problems. While driving the check engine light came on alone with no power check abs system and parking brake.

- Worland, WY, USA

While driving the vehicle caught engine fire later exploding within seconds.

- Inglewood, CA, USA