2026 Chevrolet Silverado Engine Problems

The contact owns a 2026 Chevrolet Silverado 1500. The contact stated that while driving approximately 10 MPH, there was an abnormal knocking sound coming from the engine compartment. The vehicle was reversed to the residence and parked, but the sound was heard longer. The contact stated that while the vehicle was parked, the accelerator pedal was depressed, and the sound from the engine compartment returned. The vehicle was towed to the dealer, where it was diagnosed, and it was determined that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 3,134.

Truck has less than 1800 miles. Was at a stop light and the vehicle started shaking and making metal tin rattling sounds. Stopped for gas, started the vehicle all noises went away. Got onto the freeway and about 1 mile down the road the truck lost power at 70 MPH. I slowed down and the vehicle continued to lose power. I put my flashers on and started to pull over and the truck died, all dash lights went black and the truck was off. I rolled to a stop and parked the truck. Called a tow truck. The vehicle wouldn’t start. It turned over at first and then nothing. I was not able to shift the vehicle into neutral. The tow truck asked me to assist while we Dragged the entire truck into the flat bed trailer. Dealer called late after noon the next day. Saying the motor was seized and had to be replaced entirely. The service technician said this has been happening to the 2021-2024 6.2L engines as well and they’ve seen plenty of them. They recalled those a used a band aid fix of replacing the oil with heavier weight and a new drain plug. He said it’s not working and all those trucks are having the same issues. He said, this was not his first 2026 motor seized in a 6.2L. He’s had another one recently low mileage that seized also. I asked for a different motor. I was told not to worry we will give you a 3 year/100,000 mile warranty. The truck was $100,000! And now they only want to warranty it for the same 3 years, just higher mileage… The motor is on back order and no telling when I’ll get my truck back. This is my 3rd Silverado and my 2017 is still going strong with 100,000 miles on it. They have a serious consumer issue on their hands and should be buying these trucks back as we will not be able to rely on the new motors. Some people have had 3 and 4 motors replaced for the 2021-2024, 6.2L engines.

BRAND NEW 2026 CHEVY TRAIL BOSS LT 6.2L V8. DROVE NORMALLY FOR 1291 MILES BEFORE THE ENGINE LOCKED UP AND VEHICLE DIED WHILE DRIVING. CHECK ENGINE LIGHT FLASHED A FEW TIMES BEFORE IT DIED. GLAD I WASNT TOWING ANYTHING YET. ONCE I COASTED TO A SAFE AREA, THE TRUCK WOULD NOT RESTART. DEALER SAID ITS THE ENGINE. NO ETA AS THEY ARE NOT AVAILABLE. VEHICLE SITTING AT THE DEALER WITH NO ETA ON PARTS. THIS IS A 2026 SO IT IS STILL UNDER POWERTRAIN WARRANTY AND NOT UNDER THE RECALL YET.

2026 chevy 1500 high country 6.2L with 6032 miles, engine stalled twice 3/11/2026 in one day, no check engine light no signs of anything catastrophic just simply stalled early morning commuting from work at a street light then later on same day driving with my 3 kids engine knocking/binding noise coming from engine while driving on highway stalled again leaving us stranded with engine blown on a busy offramp exit with kids under 8 in vehicle, officers arrived to guide traffic around us in a high risk environment from potentially rear ending us while waiting for roadside to recover us, truck has been towed to dealership and will most likely need new engine. no warning lights no check engine, just mysteriously and unexpectedly damaged from one minute to the next.

Truck has 2600 miles. driving down road at 55mph and heard loud squeeling noise coming from front of truck, lost power and knocking noise coming from engine. towed to dealer and needs complete engine replacement.

On Tuesday 01-20-2026, I was driving from Dallas Fort Worth to Oklahoma City, OK. I was driving down the highway I-35 at about 80 mph. Suddenly I felt a loss of power and my truck started to bog down. As I pulled over, the engine stalled out and would not start up again. It would crank but it would not start. My truck was towed to a dealership in Norman, OK. "Landers Chevrolet". I was contacted by the dealer the morning of 01-21-2026 informing me that my engine is going to need replaced. My truck is a 2026 Chevrolet Silverado LT Trail Boss with 6.2L and 6,457 miles on it. At this time, I don't have any paperwork or a copy of the repair order because the vehicle is still in the shop. The dealer told me that the motor is on order and should be here in 4-6 weeks. I purchased this vehicle on October 16, 2025.

At 4400 miles on new truck started a random cylinder misfire which engine jerking and causes ESC, Emerg breaking and adaptive cruise control to turn off. Will reset itself then do it again. Little over 100 hours on new engine. It happens on longer trips on of off the highway.

Driving down a single lane road at aprox 30-35 MPH, when without any warnings the engine began to make a noise (like it was eating rocks), smoke began billowing out the tail pipes, the dash cluster lit up with error codes (unable to read due to attempting to get vehicle off the road), engine completely stopped, dash cluster would only show the check engine light, when attempting to get the vehicle towed it could not be put in neutral and the parking break had engaged and would not release. Vehicle was towed to nearest dealership and they confirm the engine had "seized" and would need to be replaced. Existing engine has 4190mi. If this had occurred on the highway or busy street I dont feel I could have safely gotten the vehicle out of harms way.

Engine derated when towing travel trailer putting us in an unsafe situation during heavy traffic. No warning other than display on dash reading “reduced acceleration - drive with care”. Took immediately to dealer and they confirmed “thrust bearing failure” manufacturer defect and showed us Field Service Bulletin 25-NA-307 dated 9/30/25.

November 28th 2025 we were coming down Logan canyon in Utah at 50 miles an hour when i was passing another vehicle on the left I felt a hard shift and a prompt came on the dash that said reduced acceleration. So as I was passing the vehicle I was pulling in front of them and lost the ability to accelerate or even hold speed. I passed the vehicle got in front of them and slowed down rapidly without any ability to control the speed of the truck. At this point when I would push the gas nothing would happen so I pulled off the side of the road. While we were sitting, there was suddenly a burning smell in the cab so we rolled down the windows and made sure the doors were unlocked in case we had to jump out. We sat there for a minute everything seemed fine I checked the accelerator and it was working again so we drove home. I immediately took the truck down to John Watson Chevrolet to have it looked at. I told the service writer what had happened and she said there was a code that had been thrown however there was nothing now and since everything seemed fine I shouldn’t worry about it because the computers trip pretty easily on these new trucks. I insisted on making an appointment so she scheduled me for Tuesday the second of December. I took the truck in just before 730 today the second of December. Christina from John Watson checked me in and told me she would let me know when my truck is ready. She called me at 12:34 but I missed so she called again at 1:18 to tell me that she had some news on my truck and that it was going to need a new engine. I took her the dealership rental back and she sent me to enterprise for a 45 day rental. They have had the car for just over two weeks at John Watson Chevrolet in Ogden Utah.

I purchase a brand new 2026 Silverado ZR2 with a 6.2 engine. A little over a week later at 511 miles it left me stranded on the side of the road. Towed it to the dealership and the dealership advised there was a misfire and cylinder number eight. However, they were unable to find a solution and had to contact GM engineers. I had to replace it with another new vehicle and lost money on the “trade”. Dealership only advised that “it needed extensive repairs”. It’s clear that the 6.2 issue had not been addressed properly.

Pulling a trailer down the freeway and the vehicle went into limp mode. After getting to the closest dealer for inspection, it was determined that the vehicle needed to have the engine replaced