2019 GMC Sierra 1500: engine failure

Filed Nov 1, 2026 · Engine · UT

Catastrophic Engine Failure/Engine Seized at Highway Speed We were driving on a two lane highway at approximately 55 mph. All of a sudden pressing the gas pedal did nothing and after a few seconds the truck died. I was able to move over a foot or two but there was really not much shoulder. We were blocking traffic. I tried to call for help but had no service and making an emergency call would not work either. I had just started to walk down the highway until I got service when a sheriff's deputy pulled up behind us to help. Thankfully no one was hurt. There were no warning lights or sounds on my dash. The only thing the truck said was to shift to Neutral to restart which of course wouldn't work. The only other indication of what had happened was the temperature gauge was as hot as it would get. When we popped the hood the coolant was boiling and spewing out of the relief valve and the oil was completely empty. My oil was full before we left. My engine had siezed. The dealership won't tear down the engine to find the specific cause becasue it's too costly. It is still sitting at rhe dealership now.

Filed Nov 1, 2026 · Engine · UT

Catastrophic Engine Failure/Engine Seized at Highway Speed We were driving on a two lane highway at approximately 55 mph. We had just left home and only gone 20 miles. All of a sudden pressing the gas pedal did nothing and after a few seconds the truck died. I was able to move over a foot or two but there was really not much shoulder. We were blocking traffic. I tried to call for help but had no service and making an emergency call would not work either. I had just started to walk down the highway until I got service when a sheriff's deputy pulled up behind us to help. Thankfully no one was hurt. There were no warning lights or sounds on my dash. The only thing the truck said was to shift to Neutral to restart which of course wouldn't work. The only other indication of what had happened was the temperature gauge was as hot as it would get. When we popped the hood the coolant was boiling and spewing out of the relief valve and the oil was completely empty. My oil was full before we left. My engine had siezed. The dealership won't tear down the engine to find the specific cause becasue it's too costly. It is still sitting at rhe dealership now.

Filed Oct 19, 2026 · Engine · 139,802 miles · GA

The contact owns a 2019 GMC Sierra 1500. The contact stated that while driving at 65 MPH, the vehicle experienced a slight loss of motive power, an abnormal sound emitted from the engine, and all warning lights illuminated. The contact pulled over to restart the vehicle; however, the vehicle failed to restart. The vehicle was towed to the contact's residence and was later towed to the dealer, where it was diagnosed, and the contact was informed that the engine failed and needed replacement. The manufacturer was notified of the failure. The failure mileage was 139,802.

Filed Oct 16, 2026 · Engine · MI

Vehicle started running very rough & displaying error codes for "steering assist is reduced", "service parking brake", and "service ESC". While driving vehicle it would accelerate & deccelrate on its own. Limped the truck to our local reputable mechanic who ran tests & determined it as an issue with the lifters. It is known gm is currently having issues with the 6.2l v8 engines. Clearly this issue is wider spread than the current few years they are admitting to. We are having to have a new engine installed at our expense.

Filed Oct 16, 2026 · Transmission · CA

Engine died while on the freeway. Had the truck sent to my dealer via flatbed with AAA. They diagnosed it as the known lifter issue—lifter broke and metal went into the camshaft and scored it. So I need to replace the camshaft and lifters. They’re quoting me $12k for that. I have 83000 miles on this car and I take very good care of it.

Filed Oct 2, 2026 · Transmission · FL

Engine failure. My engine is near failure, loud knocking, check engine light and trusted repair shop analyzed. The repair diagnosis is that the engine will fail in the very near future and that is not safe to drive because of risk of failure. I like the truck and it is still in great condition (129k miles). So, I search for recall information and see the 6.2L 2021-2024 recall and see there is additional investigation underway on newer models. Is it possible it goes back to the redesign of the pick-up in 2019? It sounds like the same issue.

Filed Oct 1, 2026 · Transmission · NC

Truck has GMC 6.2L engine at 66,000 miles, lower end of engine failed. GMC refused to handle complete engine replacement. Final bill was $9858.66, GM covered $1400.00. Local GM dealer truck was purchased from refused to assist in any way. Dealer refused to give detailed diagnostic of what caused engine failure or the repairing tech's repair notes

Filed Sep 29, 2026 · Engine · 164,687 miles · LA

The contact owns a 2019 GMC Sierra 1500. The contact stated that the engine failed to start after several attempts. The vehicle was towed to an independent mechanic where a diagnostic test was performed and the mechanic discovered metal shaving inside the engine oil pan. The vehicle was diagnosed with engine failure. The vehicle was repaired. The failure mileage was approximately 164,687.

Filed Sep 28, 2026 · Engine · 142,370 miles · MO

The contact owns a 2019 GMC Sierra 1500. The contact stated that while driving 55 MPH, the vehicle experienced engine failure. The vehicle was towed to the local dealer, where it was diagnosed with total engine failure. The dealer informed the contact that the VIN was not under recall. The failure mileage was approximately 142,370.

Filed Sep 23, 2026 · Engine · IA

6.2 liter engine failure @ just over 100,000 miles. Prior to 100k miles I had taken to the dealership for sporadic loss of oil. They confirmed that the oil had been upgraded previously as instructed by GM so must be another source of the leak. Engine locked up while driving down the road. Had to have the vehicle towed and the mechanical said the motor is shot, and related to lower camshaft bearing issue. The only warning signs were the low oil light which happened around the mid 90k miles, so I would monitor that. When the engine failed there was no low oil light on, it just started shaking/vibrating and then kicked out. I think hte mileage read right around 103,000 approx. when it died.

Filed Sep 22, 2026 · Engine · MI

2019 GMC Sierra Denali 6.2L , Back in march 2026 my motor seized up , waited for a month for a new motor replacement that I had to pay out of pocket for 12k+, Finallyy got my truck back mid may! , fast forward to [XXX], Lifters and cam went out had to get replaced, I only driven under 5k miles since the motor replacement (The motor I payed for came with a 3 year warranty) , Also over a months waiting… [XXX], I receive a call from the dealership saying my truck was ready for pick up but during the test drive , it started having a bottom end problem, Turns out it was a bearing issue! , Now they have to replace the motor again! Michigan! INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Sep 21, 2026 · Engine · 113,000 miles · OK

The contact owns a 2019 GMC Sierra 1500. The contact stated that while driving 35 MPH, the vehicle lost automotive power. There was no warning light illuminated. The contact attempted to restart the vehicle, and the check engine warning light illuminated. The vehicle was towed to an independent mechanic to be diagnosed, and DTC: P0016 was retrieved. The contact was informed that the engine needed to be replaced due to catastrophic engine failure. The manufacturer was notified of the failure. The failure mileage was 113,000.