2020 Chevrolet Silverado 1500 Engine

The contact owns a 2020 Chevrolet Silverado 1500. The contact stated that while driving 55 MPH, several unknown warning lights illuminated. The vehicle was towed to the dealer where it was diagnosed. The dealer became aware of an abnormal sound coming from the lifters and camshaft, which failed to create a misfire. The contact was informed that the engine needed to be replaced. The vehicle was not repaired due to the cost. The manufacturer was not notified of the failure. The failure mileage was approximately 68,000.

The contact owns a 2020 Chevrolet Silverado 1500. The contact stated that while operating the vehicle, there was an abnormal rattling sound coming from the engine compartment. The vehicle was driven to the local dealer, who diagnosed the vehicle and determined that the engine was faulty and needed to be replaced. No further information was available. The vehicle was not yet repaired. The manufacturer was notified of the failure. The contact was informed of NHTSA Action Number: PE25001 (ENGINE, ENGINE AND ENGINE COOLING). The contact indicated that the vehicle had experienced the failure listed in the recall. The failure mileage was 60,000.

The contact owns a 2020 Chevrolet Silverado 1500. The contact stated that while driving at an undisclosed speed, there was a loud knocking sound coming from the engine compartment, and the vehicle shook violently, with several unknown warning lights illuminated. The vehicle was taken to the dealer, where it was diagnosed with engine failure. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure and referred the contact to the NHTSA Hotline for further assistance. The failure mileage was approximately 84,000.

Had sudden engine failure at 82k and have been told I need a new engine. Can't afford it, GM says there's nothing they can do to help cover the repairs. I have a new engine on backorder, nobody knows when it will be in, they told me they have other customers who have been waiting for new engines for months.

While driving in Southern Utah my truck gave me a Service ESC (Electronic Stability Control) Warning, Service Parking Brake Warning, and check engine light that was for code P0303. I had the vehicle towed to the local Chevrolet dealership and it was diagnosed with lifter failure and camshaft damage because of the lifter failure. Safety was compromised because of the failure of the ESC and the loss of power and stability of the engine. I didn't receive warnings prior to the failure. This appears to be a well-known issue with several service bulletins issued for the vehicle.

Having failure with the engine coolant control valve. Have taken my truck to the dealership for overheating and they always come and say that they can’t find an issue. They also informed me that I need to bring it back when my motor blows a head gasket which is complete bull.

Lifter failure on the 5.3L L84 engine. Due to Dynamic fuel management that come with the trucks.

About 3 months after the 5 year 100000 mi warranty with only 70000 miles on the duramax diesel engine the exhaust brake part of the engine emissions/exhaust split along the weld. Have seen a number of these reported on the internet as well. Sounds like a manufacturing problem. The vehicle's check engine light came on and it's now at the dealership getting a new exhaust brake housing and bracket replaced. If this was in California or the 12 states listed would be covered for 8yrs/100000 miles.

Engine seized my truck has been at the Chevorlet Tempe dealership I filed a claim with GM still no response.

Loss of power when driving and a shutter feeling when accelerating. I took the vehicle to the dealership for repairs and was told the torque converter was replaced due to it being faulty but problem still persists.

The contact owns a 2020 Chevrolet Silverado 1500. The contact stated that while his son-in-law was driving 61 MPH, the vehicle made an abnormal clanking sound and stalled. The driver pulled over safely. The OnStar Mobile App alerted the driver of an issue with the vehicle. The contact stated that the vehicle was making an abnormal ticking sound prior to the failure. Upon arriving to the location of the vehicle, the contact noticed an oil leak underneath the vehicle. The contact stated that he was a certified mechanic, and the vehicle was towed to the contact's Auto Repair Shop, where the contact determined that the rod had gone through the engine block. The contact called an unknown local dealer, but the vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 80,000.

On [XXX] I pulled off from a Red Light and vehicle started flashing codes. I slowed down and engine was missing. I had vehicle towed to Gilmore's Auto Center in Culpeper Virginia. The truck was diagnosed later that day as a Rod Bearing failure. The engine gave no warnings prior to that day. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Lifter issues, loss of power, flashing check engine light

The engine started making a strange sound while driving. Was taken to dealership were it was found that the engine was going bad due to a lifter failure. The engine only has 64,000. miles on it and was maintained by dealerships for routine service.

At roughly 146,590~ miles the truck began making a knocking noise while driving at any speed, complainant had the truck towed to independent shop and was evaluated. Was told by shop that the engine can shaft pitted and engine metal shards had exploded and shattered throughout the engine. Making the opportunity for engine stalling or risk of fire/ smoking while operating the vehicle extremely likely. Complainant was told there was no access to engine replacements or parts at this time and the wait time to receive one was 4-6 months. No warning lights ever went off. Engine was eventually replaced entirely when the part became available by an independent service dealer.

Was driving on highway and vehicle went into "engine power reduced" and dropped from 60mph down to 35mph and then steadily decelerated down and wouldn't go over 18mph. Per mechanic it is the engine coolant control valve and the part is not available and could be months to a year before the part is available. Online shows this is a widespread issue with GM / Chev vehicles but no recall has been ordered and parts not available anywhere. Completely unacceptable to pay $65000 for a vehicle that is just barely 5 years old and have this kind of issue and manufacturer doing nothing about it.

Oil pump went out. Got it repaired. Then, a few days later, while driving on the freeway at 70MPH the engine made a lot of noise then quit in middle of the freeway leaving me vulnerable to being hit. Was able to coast in neutral to the edge of the road. Has 73000 miles on it. Dealer says I need an engine replacement after just spending $5,500 for oil pump replacement. Has been at the dealer over a month and no replacement engine is available.

The engine seized up. Yeah, the truck is at a trusted mechanic and he told me that the engine seized. No warning signs. The truck wouldn't start and the engine light was on.

Lifter failure

Lifter failure and miss fire

In November 2023 my check engine light suddenly started flashing, my service parking brake light came on, traction control light came on and service ESC message was on the DIC. Then my truck started running really rough. At the time I was going roughly 10 mph. I took it to the dealership and they found a lifter had failed. My truck was at the dealership for a month. Fast forward to now, February 2025 and today I got the exact same lights appear on my cluster and same message. I was driving approximately 50 mph and my truck felt like there was a lack of power and there was hesitation in the engine.

In November 2023 my check engine light suddenly started flashing, my service parking brake light came on, traction control light came on and service ESC message was on the DIC. Then my truck started running really rough. At the time I was going roughly 10 mph. I took it to the dealership and they found a lifter had failed. My truck was at the dealership for a month. Fast forward to now, February 2025 and today I got the exact same lights appear on my cluster and same message. I was driving approximately 50 mph and my truck felt like there was a lack of power and there was hesitation in the engine.

The contact owns a 2020 Chevrolet Silverado 1500. The contact stated that while driving at various speeds, there was a ticking sound coming from underneath the hood of the vehicle. The contact stated that the sound was evident when the vehicle was started, and while the vehicle was idling. The check engine warning light was flashing, and the vehicle was shaking while idling and while driving at various speeds. The vehicle was taken to the dealer, who diagnosed that the engine had failed due to a failure with the lifters. Additionally, there was coolant leaking into the engine. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was not informed of the failure. The failure mileage was 79,400.

The contact owns a 2020 Chevrolet Silverado 1500. The contact stated that while driving approximately 40 MPH, there was an abnormal pop and ticking sound coming from under the hood. The check engine and several other unknown warning lights were illuminated. The vehicle was taken to a local independent dealer, where it was diagnosed with a failure in cylinder #7 and piston failure. The vehicle was not repaired. The local dealer was contacted. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 99,600.

The second oil leak repair and the first repair for the oil pan failed within one week of the previous repair. This is the third oil leak that occurred in the LM2 engine in the 2020 Silverado. It was identified as an additional leak in the oil pan which had already been repaired the week prior. This is a failure within seven days from the previous repair. I lost 1/2 quart of oil during a 650-mile drive back from vacation. I took pictures of the oil level before leaving and driving home. During our drive, we passed through an area called Yermo where it was 107 degrees at 11am. The two closest Chevrolet dealerships are either 45 minutes or 1.5 hours one-way. I was incredibly frustrated since imagine being stranded in 107-degree weather with your family on the side of the road unable to run AC. It is a serious life, health, and safety issue at this point. I called GM and opened a case expecting them to assist me with the issues with the truck. Fast forward to today, I spoke with Jill at GM, they closed the case without even reaching out to me. This was the third of four oil repairs that have been conducted on my vehicle and the LM2 engine. It isn't a safe engine to have. **No loaner vehicle was given during the repair.**