2019 GMC SIERRA 1500 Complaints

Engine seized on June29th while driving on I 64 . (6.2 L87) due to oil line failure. Engine replaced on July 18th, 2026. New engine started leaking oil from camshaft and gasket on August 10th 2026, back in GMC Shop on August12th 2026 for repairs, still waiting parts today. Sudden failure on road in traffic Inspected by GMC Southpoint. No indication prior to failure and shut down completely. Could not do anything to move vehicle out the road.

There was a catastrophic internal engine failure, due to cam/lifter/bearing issues. This caused the timing chain and tensioner to jump and the engine to be out of alignment. This caused the valves to all be bent as a result. I believe that this has been an issue for longer than what GM has originally recalled for, and I am submitting this complaint because I read that there is an active investigation into this.

At approximately 85,000 miles, the engine in my 2019 GMC Sierra 1500 seized. The vehicle was parked when it occurred. Inability to start. This created a safety risk because an engine seizure can cause sudden loss of propulsion in traffic. Before the failure, I did not notice any red flags. The problem was inspected and confirmed by a GMC dealer, which diagnosed the condition as an engine seizure. The failed engine is not available for inspection. I am not aware of the precise internal cause beyond the dealer’s diagnosis.

At approximately 85,000 miles, the engine in my 2019 GMC Sierra 1500 seized. The vehicle was parked when it occurred. This created a safety risk because an engine seizure can cause sudden loss of propulsion in traffic. Before the failure, I didn't notice anything that would raise any alarms. The problem was inspected and confirmed by a GMC dealer, which diagnosed the condition as an engine seizure. The failed engine is not available for inspection. I am not aware of the precise internal cause beyond the dealer’s diagnosis.

The contact owns a 2019 GMC Sierra 1500. The contact stated that while at a red traffic light, the vehicle accelerated unintendedly, and the vehicle shuddered with an abnormal dinging sound coming from the vehicle. The message "Transmission Hot - Idle Engine" was displayed on the instrument panel. The vehicle was taken to a dealer where it was diagnosed and determined that the transmission was slipping, overheating, and that the transmission needed to be replaced. The contact researched and became aware of a recall; however, the VIN was not under recall. The vehicle was not repaired. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline to report the failure. The failure mileage was approximately 126,098.

The lifters collapsed on cylinder 3 causing the camshaft to shed metal into the oil leading to bearing failure. Leaving us stranded 210 miles away from home. Motor has 85,909 miles. This is the same problem that the 2021 model year trucks have that has a recall. The 2019 model years have the exact same problems. I personally know 6 people who have had this happen. Check out the Facebook page. GM 6.2 Lifter and bearing failure.

Complete failure on Cylinder 3 after AFM system caused lifter collapse in 5.3L V8. Lifter fell into cam shaft and scored the shaft at 55mph. Truck started surging and shaking violently. Truck shaking had me swerve to the side of the road as I was coming up on a crosswalk with golf cart about to cross the road. Vehicle was inspected at Atwater GM in Aitkin, MN and component failure was identified. Two weeks later I paid $14,149 to have a complete engine replacement. There was absolutely no indication that this event would take place. Just months before I took this truck from [XXX] to [XXX] and back without an issue. GM should be held responsible for a complete lack of safety due to faulty AFM engines. Not only did this endanger my safety, but I also had to withdraw from my 401k to pay for the outrageous cost of a new engine replacement because of a single point of failure. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

ENGINE DIED!!,Had it towed to local dealer and was told I have L87 engine failure ,but the recall dosen't cover 2019 models. Service tech says it only covers 2021-2024 6.2 engines. Is there any action I can follow to be added to the recall. Thanks for your swift attention.

The Lifter on my GM Sierra AT4 truck with a 6.2L (L87) engine collapsed and damaged the engine shafts and cylinders in the block. While driving, the engine started to lose power, and a ticking noise started to occur. I pulled the car over to the side of the road and called the dealer, which told me to have the truck towed into the dealership. Metal was found in the Oil. The entire engine has to be replaced for $12K. I have a life time oil change service with the dealer an also an extended warranty, but my mileage was over the warranty by 6K miles. The warranty ended at 106K miles and actual milage was 113K. I reached out to my dealer and also to GM to discuss goodwill assistance and GM pushed back indicating they cannot do anymore. I asked the rep to esalate the ticket

Subject: Event of engine failure • While driving on a level paved road at 15 miles per hour in a busy area my 2019 GMC Sierra Denali pickup truck stalled in the middle of a busy street. • Truck stalled in a heavy traffic area at an intersection putting myself and passengers in a dangerous area and situation. This obstructed the normal flow of traffic causing a danger to pedestrians and normal vehicle traffic pattern. Each had to go around my disabled truck into oncoming traffic putting them and normal traffic flow at risk. •Upon securing a towing service the truck was transported to the nearest GM dealership. This happened on a Friday afternoon and the truck got to the dealership after hours. I returned to the dealership the next morning and was told that they may not be able to check the truck until probably Tuesday. On Monday afternoon I called and they hadn't been able to get to it. I received a call the next day and was informed that the technician at the dealership had put a breaker bar to the crankcase and the engine would not move and therefore the engine is seized. • There were no warning lights that came on prior to the truck stalling in the street. There was no noise prior or any other symptom to give any indication that the truck was not operating in a normal fashion.