2020 Chevrolet Silverado 1500 Engine

Engine failed on interstate while pulling my RV. Almost had a bad wreck due to this happening. This is the known 6.2L engine failure issues. Had to have motor replaced by Chevrolet and had to pay out of my own pocket.

We own a 2020 Silverado with a 6.2L L87 engine… I am aware of open investigation # EA25007… Our vehicle had sudden engine failure.. no prior warning lamps before failure. (Our vehicle had no open recalls) Once vehicle engine failed left us with no power… had to coast vehicle to a stop. Will not restart. Verified proper oil level on dipstick so vehicle was not low on oil. Had to tow vehicle to shop .. retrieved code P0016 - crankshaft position Oil pan was removed and found bearing material as mentioned by GM issued recall 25V-274. Verified oil pickup tube was not clogged. All symptoms explained by 25V-274, we’ve experienced.

The contact owns a 2020 Chevrolet Silverado 1500. The contact stated that immediately after leaving the dealer after the vehicle was purchased, the check engine warning light illuminated. Several days later, there was a loud knocking sound coming from the engine before the engine failed. The contact referenced NHTSA Campaign Number: 25V274000 (ENGINE AND ENGINE COOLING); however, the VIN was not included in the recall. The vehicle was taken to a dealer and an independent mechanic, but was not repaired. The vehicle had experienced catastrophic engine failure. The check engine warning light was displayed, and audible knocking was coming from the engine. The manufacturer was notified of the failure. The failure mileage was 153,000.

The first thing was the whole engine shut itself off going 40mph and slowing down thankfully after I turned the truck off and back on it started right back up then I was driving 75 on the highway a couple days later and the whole truck started to shake as check engine lights came on and flash and the engine started to tick and groan. We pulled the spark plugs and cylinder 5 had clearly not been firing as it was designed to and then later found that the entirety of cylinder 5 had basically shredded itself from the inside out. Now my truck is waiting at the shop for a new engine. Both cases I had my kids in the car trying to get home.

Lifter failure in 2020 Silverado 5.3 engine causing loss of power while driving.

The contact owns a 2020 Chevrolet Silverado 1500. The contact stated that while his son was driving 75 MPH, there was a knocking sound coming from the vehicle. The driver pulled over and turned the vehicle off, but the vehicle failed to restart. The check engine warning light was illuminated. Upon researching the failure, the contact associated the failure with NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling). The vehicle was towed to the local dealer, where it was diagnosed and determined that the engine had seized. The vehicle was not repaired. The manufacturer was contacted and confirmed that there was no recall coverage on the VIN for the failure. The failure mileage was approximately 165,000.

At highway interstate travel speeds, vehicle was losing intermittent power. Exhaust at stopped, idle during trip smelled heavily of gasoline. White smoke blowing from exhaust with only 38k miles on the truck. Dealership is replacing the entire engine now and sounds like GM doesn’t want them to fully explore the cause of failure.

I pulled up to a traffic light at a busy intersection in Lubbock, TX, and the engine just shut down on approach to a red light. The vehicle still had power (radio, headlights, AC/heater, etc.) but the engine would not start or even turn over and try to start. The vehicle was towed to a Chevy dealership in Lubbock, TX, and they said they believed it was an internal engine failure but wouldn’t be able to look at it for several weeks. I had it transported to my hometown in Taylor, TX, and my certified mechanic replaced the starter and battery solenoid but the engine still wouldn’t start. They drained the oil and found metal shavings in the oil. They too believe that the engine suffered a catastrophic failure and needs to be replaced.

The contact owns a 2020 Chevrolet Silverado 1500. The contact stated that while driving at various speeds, the vehicle unexpectedly sputtered. There were no warning lights illuminated. The dealer was contacted; however, the vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure and referred the contact to the NHTSA Hotline for further assistance. The approximate failure mileage was 73,000.

The 6.2L engine failed. The same as the 2021-2024 recalls.

The contact owns a 2020 Chevrolet Silverado 1500. The contact stated that while driving approximately 65 MPH, the vehicle started to hesitate with several unknown warning lights illuminated. The contact stated that there was a misfire in the engine, and her husband pulled off the roadway and turned off the vehicle. The vehicle was restarted and driven back to the residence at speeds no greater than 50 MPH. The contact had taken the vehicle to a local dealer, where it was diagnosed and determined that the left engine lifters had collapsed and needed to be replaced. The contact was advised by the dealer that the right-side engine lifters should be replaced while the engine was disassembled. The vehicle was not yet repaired. The manufacturer was informed of the failure. The failure mileage was approximately 96,000.

The truck had a lifter failure which caused the pushrod to bend damaging the camshaft as well. I spent $5000 dollars just for the problem to happen again. I’ve have spent nearly $10000 on this issue. This not something you expect from a truck that you pay nearly $60000 for.

What component or system failed or malfunctioned, and is it available for inspection upon request? Based on information from ODI Resume EA25007 & Safety Recall N252494002, it is more than likely engine connecting rod bearing failure. How was your safety or the safety of others put at risk? I was traveling at freeway speed, 70mph when it occurred. Has the problem been reproduced or confirmed by a dealer or independent service center? 11/25/25 at 12:33 (pacific), I am currently stranded 190 miles from home and waiting for the truck to be towed to the dealer. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? It has not. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? Prior to Failure: Since I’ve owned the vehicle, I’ve notice slight ticking and slight knocking during cold start within the engine bay. At the time the noises seemed normal and not cause-for-concern. At Time of Failure: I was traveling on level grade on the highway when I heard a deep knock from the front, bottom left side of the engine bay. Within about a minute from the initial noise, I received a “check engine” warning light and a message of “ESC Warning” displayed on my instrument cluster. At that moment, I noticed the engine noise become more prevalent and constant. I immediately slowed and coasted to my next exit off the freeway.

Engine Failure 6 Nov 2025 Yes, engine is available for inspection. Possible loss power, unable to control the vehicle. Vehicle engine failure has been confirmed by dealership, Ruben Milton Chevrolet and Jim Hudson Cadillac in Augusta Georgia. Vehicle has not been inspection by manufacturer, police, insurance representatives. No warning light, no knocking noise, no messages on dashboard.

GM declared my original engine as unfixable and decided to replace my engine luckily with 2 weeks remaining in warranty. It had similar clicking noise to everything else I've seen related to this 6.2L having issues. It currently has a new engine that can be inspected if need be. As well as receipt given to me from Klein Chevy from engine replacement. My engine could've failed while driving if I didnt notice the clicking noise prior to getting it looked at. Putting other in danger if driving on a public roadway. Yes the noise/defect was reproducible upon dealer looking at it. Unsure if the vehicle was inspected by the actual manufacturer but they removed my motor and sent it back to the factory. Was never inspected by police or insurance that im aware of There was no check engine light or warning lamps, only thing I noticed was a clicking noise that the common layman would have probably missed, they appeared roughly around 46,000 miles.

Driving on highway truck lose power, engine lights start to flash and cracking noises start to come from engine. The lose of speed almos cause another vehicle to rear end me, Truck gave no signs or warnings before. Truck was delivered to a local shop and due abundant amount of metal flakes in oil engine need to be replaced

The lifters failed which caused the camshaft to destroy itself. I am now looking at having to replace my entire motor because of this. This is a similar problem to the current recall going on with the 2021 through 2024 trucks with the same motor. I have 146,000 mi on my truck

The engine is blown. Our GM Dealership where we purchased it, inspected it and says the engine cannot be repaired and must be replaced. And independent garage gave the same diagnosis. Went from running fine one day , to bucking and stalling in traffic causing a hazard to everyone on the road. Check engine light, check brakes, stabilitrak, ALL the lights on the dash were on like a Christmas tree. It doesn't run now. Currently sitting in our driveway now unable to be driven for three months as we don't have $10,000.00 for a new engine, and the extended warranty we purchased through the dealership expired 4 months before it blew up. We are now making loan payments on a GM vehicle that did not even last the length of the loan. Seeing a report on this exact issue, we did not even know until today that there was a place we could send in a complaint to. You are welcome to inspect the truck, but you would need to come to us, as it cannot be driven. Where can we get any help with this? Please help.

The Engine began to make a knocking noise at ~62000 miles on the odometer. I assume it was bearing failure. MURREY CHEVROLET GMC diagnosed the problem as catastrophic engine failure with the repair being a replacement of the engine. There were no warning lamps. This is a 2020 Chevrolet Silverado High Country with the 6.2L engine.

My problem is the same as many others with the 3.0 Duramax engine. I h e the P0016 code indicating the the timing chain that can cost up to $10k and sudden engine failure if not repaired. My vehicle is only 5 years old and has 98K miles at the moment.

Vehicle started miss firing along the highway without any previous signs of problems. The vehicle was driven straight to our home and then to the dealership a few days later. We were told there, the lifters have failed. Once they started the repairs we were also adviced the cam have suffered significant damaged and needed replacement as well. The vehicle was only inspected at the dealership once it was dropped off. The first and only sympton of the insurance was the day it failed.

Fan started running non stop, we overheated, engine cut out and says reduced power. This diesel engine has 80k miles which is nothing for a diesel.

I was on a trip to Iowa and noticed a loud ticking noise starting in my engine. There was no warning lights on the dash to indicate any problems. I checked the oil and notice it was not registering on the dip stick. I added over a quart of oil and the noise continued. My truck was just at a dealer 2 weeks prior for an oil change and they noted that everything was good and in proper working order. No leaks or no other issues. I set up an appointment at a chevy dealer at the destination which I was traveling to for a check up. About 60 miles from the dealership, my check engine light went on. I immediately stopped and checked all my fluids which were showing normal ranges. I dropped my truck off for inspection and they advised me that my lifters need to be replaced. I authorized the repair and after the new ones where installed, they tested my truck and noticed that there was still a ticking noise coming from the engine and was not holding any oil pressure. They advised me that the motor needed to be replaced at a cost of almost $15,000. I will request all pictures and videos taken by the dealership for further inspection if needed.

My 2020 Chevrolet Silverado 1500 LT with the 3.0L Duramax diesel engine has experienced three separate failures of the coolant control valve over a span of less than two years. Each failure resulted in the vehicle entering reduced engine power mode, which drastically limits acceleration and the ability to maintain safe driving speeds — particularly dangerous on highways or in heavy traffic. Chronology of Failures: October 2023: First coolant control valve failure. Part was backordered. Repair took ~6 weeks. June 2024: Second failure of the same part. Another 6-week delay in repair due to part availability. June 2025: Third failure of the same part. Vehicle is currently inoperable and unsafe to drive. Each time, the failure triggered a check engine light and immediately placed the truck into reduced power mode. This issue significantly compromises driver safety, especially in high-speed or congested environments, where limited acceleration can increase the risk of collisions. Safety Concerns: Loss of acceleration power at critical times (merging, overtaking, etc.) Unpredictable vehicle behavior Extended unavailability of parts leads to prolonged periods without a functional vehicle Possible underlying design flaw or recurring part defect Given the recurrence, safety risks, and the number of similar complaints I have seen from other owners, I believe this is a widespread and systemic defect that deserves NHTSA investigation. Requested Action: I urge the NHTSA to investigate the frequency and root cause of coolant control valve failures on the 3.0L Duramax engine in the 2020–2022 Silverado models. This is not an isolated incident, and repeated failures of a critical engine cooling component warrant a safety recall or technical service bulletin (TSB) requiring redesign or replacement with a permanent fix.

While driving the active fuel management changed my truck from 4 cylinders to 8 cylinders. This is when I heard a loud bang and a bunch of lights came on the dash and my truck started shaking and shuttering. I was able to regain control of it, but I came close to crashing. I now require a whole new engine at 100000 miles. After talking to multiple shops this ks a known issue. While they dont always catastrophic fail, mine did and almost cost me to crash. This is a serious safety concern.