2020 Chevrolet Silverado Complaint Log

The engine failed while I was driving. It started to run very rough and then the check engine light came on as well as multiple other lights. I limped it to my mechanic who found that cylinder #4 had failed and rotated which tore up the cam shaft. Total damages came to 10,404.28. I have all receipts. Safety for myself and others were impacted because it lost power immediately and could have put me or other motorists in a position to react quickly not to crash.

Transmission stalls out when going from 1st to 2nd and when driving down the road in cruse control it shutters.

-Cylinder number 5 piston failure -Cylinder number 5 cylinder failure -Cylinder number 5 injector failure Vehicle was traveling at roughly 70 mph, everything operating normally. Suddenly check engine light came on, multiple traction control lights, cruise control disabled. Vehicle started to sputter and grey smoke showed out of the exhaust. Pulled over and shut vehicle off, checked oil and coolant level both were normal. Motor temp was slightly above normal. Restarted vehicle and it continued to sputter and smoke. Local shop ran codes that showed injector number 5 loss of signal. Upon further inspection a camera was sent down the number 5 cylinder, cylinder had excessive damage and metal fragments. Large amount of oil seen both on top of piston and on spark plug. It was determined that motor will need to be replaced.

Vehicle transmission locked up. I see safety recalls for 2019 and newer but mine is not on the list. I’d like to get the GM 1-year/1500,000 mile warranty they have issued.

I was enjoying my day off with my family while driving torch highway when I try to pick up my speed to merge in, but my truck was not responding, when stepping on gas, I certainly did not saw any of them gears change I had to put to the for our safety and had to call a tow truck.

Had a check engine code and the dealership diagnosed the problem as being the coolant control valve. However being still under warranty they said that part is no longer covered under powertrain warranty as of Feb 1st. They now want me to pay 4400 for a part that fails often. Is there anything I can do?

MVC involving 7 vehicles. My truck was rear ended, pushed into on coming traffic where i was hit in the front fender, bumper and side wall of front right side ( passenger side). The rear bumper was rolled under the truck and the front right side was pushed inward towards driver side. The front passenger seat was pushed toward the driver seat. NO AIRBAGS DEPLOYED!!!

Front main bearing failure. I have 97,000 miles on my truck. I have the 6.2 engine in it. I see online that GM is having a lot of issues with this engine. My dealer is trying to help me deal with GM, but GM does not want to replace my engine. They want me to pay for it. This issue could have been bad if I was driving at highway speeds with my 2 young daughters in my vehicle with me. Definitely a safety issue.

Vehicle Shudders between 35 to 60 mph consistent with torque converter / transmission issues.

Was driving on the interstate on [XXX]. While driving, the truck suddenly slowed down and lost power. The check engine light came on and then after about a minute a message popped up on the dash saying that the truck was in reduced-power mode to prevent engine damage, or something like that. It slowed to roughly 50mph and I had to drive for maybe 5 miles to reach the next exit, narrowly avoiding collision from behind with cars driving upwards of 75. Pulled off the road to the first parking lot, then got towed to the nearest Chevy dealership in Shawnee, Oklahoma. The diagnosis was a blown connecting rod that had occurred while driving on the interstate, resulting in a necessary total engine replacement. The truck was repaired in Shawnee, Oklahoma at the dealership. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

My 2020 Silverado duramax was at the dealer for recall , next day check engine light came on and rear wheels got locked up , the dealer installed new transmission valve , next day same problem check engine light and rear wheels locked up again, now the dealer said is something to be with a speed sensor and I have to paid for it , my truck was perfectly working before all this recall thing, it’s been 3 weeks now with no transportation, because GM and Chevy dealer don’t want to respond or fix this problem with the transmission valve and transmission control module software that was installed My truck was all good before this matter

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.

There was a significant oil leak that was diagnosed during a routine oil change in March of 2025. The dealership that identified the leak attempted to pass it off as something that was out of warranty even though the vehicle had an additional six months and 45,000 miles of warranty (3.0 diesel). The leak was significant enough that loss of oil could cause the engine to fail and result in a crash. Subsequently, another dealership identified the leak and repaired the seal around the lower crankcase. It did not repair the oil leak- there are three additional reports/complaints to file.

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.

Transmission shutter

The contact owns a 2020 Chevrolet Silverado 1500. The contact stated while driving at approximately 15-20 MPH, the message “Engine Power Reduced” was displayed on the instrument panel, and the vehicle started shaking and decelerating. The vehicle was taken to the dealer who diagnosed that the engine wiring harness needed to be replaced. The dealer informed the contact that another part needed to be replaced; however, the contact was unable to recall the exact part. The vehicle was not repaired. The manufacturer was informed of the failure and informed the contact of a possible number for assistance. The manufacturer had opened a case regarding the failure. The failure mileage was approximately 124,000.

When the truck was less than 2years and less than 20,000 miles old it developed a clunking noise in the rear suspension. Sounds like 2 heavy pieces of metal softly being knocked together. The dealership inspected it and replaced both rear shocks. The noise was still there. The dealership replaced the left leaf spring assembly. This temporarily eliminated the noise. The noise came back at just under 3 years and 30,000 miles. The dealership inspected, but couldn't find the source of the problem. The noise has only worsened since then, and at a recent visit to the dealership, they could clearly hear the problem. I was told that it is the result of worn cushions between the leaf springs. I'm concerned that the truck may be unsafe. I've been contacted by GM, and at this time they are looking into how to fix it, and who should be responsible for the repair. I can't imagine that mine is the only 2020 Silverado with this problem, and think there must be other reports of a similar nature.

Transmission blew whole driving

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.

Transmission is giving the same issues as the reported diesel transmission problems in same year model. Safety has not yet been put at risk. Due to a 2 month wait time I have been unable to get it inspected by a dealer.

6L80 transmission shift flared when shifting from 2nd to 3rd gear and shuddered when driving at 45 - 50 mph and about 1400 rpm’s. The Torque Converter Clutch was spasming out causing the the torque converter to shudder which caused the torque converter to overheat at 250 degrees therefore exploding the torque converter that shot metal inside of the transmission blowing it up.

I purchased a 2020 Chevy Silverado 2.7 turbo RST from Greg young Chevy in Omaha Nebraska. Upon purchasing this vehicle within 20 days of ownership I got a check engine light indicating code P2090 for exhaust camshaft position sensor. The truck was taken back to the dealership and they at first tried to just clear the code and give the truck back however I put my foot down and requested them to look further into it. After weeks of them having the vehicle they determined there was an issue with the pcv oil separator and they replaced the part allegedly. After reviving the car back they strongly suggested I purchase an extended warranty telling me “you’re going to need it” we purchased the warranty only to discover the code reappearing less than 2,000 miles later and a tic sound in the engine. My independent research has concluded it’s a lifter failure and those lifters are now slamming into my camshaft causing excessive damage. After getting the code read more in depth I can confirm they again just cleared the code and an oil leak is still existent in the engine. This causes the auto stop to disengage which makes the vehicle leech forward when at rest while my foot is still present on the brake as the camshaft does a full rotation to adjust and correct itself to the sensors suggested position. On average this moves the vehicle approximately 1 foot forward and could lead to me damaging my vehicle or causing harm to people in crosswalks.

My 2020 Chevrolet Silverado rear window leaks causing mold on headliner and carpeting and if running electric defrost during rain it makes a sizzling noise afraid of electrical issues as well if not correct and the mold makes the interior environment unsafe for breathing

Lifter failure in the motor ALso, leaking in back window

My break system failed twice in 2 weeks. On Feb 01, 2025 around 5:35 pm, I almost ran over a dog the first time because I lost access to breaks and emergency breaks and could not stop going through my neighborhood. Today on Feb 13, 2025, I had picked my son up from school, and the breaks went out after we left the school. This time I almost ran into a car but had to turn off to the right to avoid hitting it. My son and I could have injured the person driving in front of us and ourselves. I looked up the problem, and it seems that many others have faced the same problem. When I turned off the truck for 10 minutes, the system would reset itself and start working normally again. I took the truck to the shop, and it is currently there so they can run tests on it. I recorded what it looks like on the dash when I lose all braking.

The contact owns a 2020 Chevrolet Silverado 1500. The contact stated while the vehicle was parked, there was an abnormal sound coming from the engine compartment. The check engine warning light was illuminated. The vehicle was taken back to the residence. The contact used a diagnostic tool to determine that the vapor canister purge pump needed to be replaced. 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 41,000.

On Feb 10, 2025 while in busy mid-day traffic on the highway going 55mph my vehicle without any warning signs or warning messages on dash, or dash indicator lights suddenly went into limp mode , began making a loud knocking from the engine, and started shutting down. I stopped the vehicle as soon as I safely could do so and had it towed back to the selling dealer for them to diagnose the issue. The dealer then informed me that i had a bent lifter on the left bank but they did this based on codes and not any tear down. They referred me to another local dealer. I had my vehicle towed there where they also stated lifter. Once they began to replace the lifters on the left bank scarring was found on my #3 cylinder wall and at that point I was told that my truck had catastrophic engine failure and the engine would have to be replaced. They also told me that my truck had no oil in it and the issue was caused from carbon build up. I have had every maintenance service performed on time and at the selling dealer and have all service records. I was not overdue on maintenance. I have never been told about any oil leaks or any other issues that needed to be resolved on my vehicle. I had driven the truck the night before with no issues.. There was no oil on the ground or under the vehicle for them to say there was no oil in the vehicle. I was never told that i needed spark plugs due to carbon. I believe that this has to due with the AFM issue that GM is well aware of. I had to purchase another vehicle due to the damage that was found on this required an engine replacement

After driving and doing errands I tried to pull truck into garage and noticed it was hard to move. It seemed like brakes were stuck on despite not applying brakes. I pulled out of driveway to drive around block. Lost all brakes while driving down county road at 50 mph. Check engine light on, brake failure warning on, warning light that speed limited to 43 mph, ABS light on. Eventually able to stop. Turned off engine for a few minutes. Restarted and brakes all worked again although check engine light still on. This could have been deadly on a steep road or on ice or in traffic. I see online that this is a common problem with Chevy trucks although no recall has been issued for this one. I am very concerned that this truck is not safe - for me or anyone else on the road with me. I have not taken it in. I live in the country, some distance from a dealership so nothing has been confirmed. Nothing like this has happened to this truck before and there was no other warning. It is available for inspection but is my only transportation.

I am reporting an issue with a 2020 Chevrolet Silverado 1500 equipped with the 3.0L Duramax diesel engine. The vehicle experienced a failure of the NOx Sensor Position 2, which significantly impacted performance and emissions compliance. GM previously issued Emission Recall N212351211 (March 7, 2023) for other diesel Silverado models regarding improper ECM detection of NOx sensor faults. The issue in my vehicle appears functionally identical, yet this engine and model were not included in that recall. The sensor was replaced and reprogrammed at a Chevrolet dealership at the owner’s expense. After contacting Chevrolet, a customer retention check was provided, covering roughly half of the total cost. While appreciated, the remaining cost burden remains significant. If this model is eventually included in the recall, it may allow for full reimbursement and support for other affected owners. Online forums show that many 3.0L Duramax owners are experiencing similar failures, suggesting this may be a widespread and systemic defect. Due to the strong similarities with the recalled condition in other models, I respectfully request that NHTSA investigate whether this recall should be expanded to cover additional affected vehicles. This issue presents both reliability and emissions compliance concerns. In addition, the vehicle developed a separate mechanical/electrical problem shortly after the NOx sensor failure. Because it involves different systems, I will file a separate complaint regarding that issue.

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.

I am reporting an issue with a 2020 Chevrolet Silverado 1500 equipped with the 3.0L Duramax diesel engine. The vehicle experienced a failure of the NOx Sensor Position 2, which significantly impacted performance and emissions compliance. GM previously issued Emission Recall N212351211 (March 7, 2023) for other diesel Silverado models regarding improper ECM detection of NOx sensor faults. The issue in my vehicle appears functionally identical, yet this engine and model were not included in that recall. The sensor was replaced and reprogrammed at a Chevrolet dealership at the owner's expense. After contacting Chevrolet, a customer retention check was provided, covering roughly half of the total cost. While appreciated, the remaining cost burden remains significant. If this model is eventually included in the recall, it may allow for full reimbursement and support for other affected owners. Online forums show that many 3.0L Duramax owners are experiencing similar failures, suggesting this may be a widespread and systemic defect. Due to the strong similarities with the recalled condition in other models, I respectfully request that NHTSA investigate whether this recall should be expanded to cover additional affected vehicles. This issue presents both reliability and emissions compliance concerns. In addition, the vehicle developed a separate mechanical/electrical problem shortly after the NOx sensor failure. Because it involves different systems, I will file a separate complaint regarding that issue.

Rear sliding window is leaking from unknown area.

When I would put the truck in park and proceed to turn it off, the computer would tell me the truck was not in park. I was told at the dealership that the transmission was in park, though the computer wasn't communicating correctly. Not only does it pose a risk of draining the battery, it is a safety issue. If I were to park on a hill, the only confirmation that my truck is in park is what's said on my dash.

The contact owns a 2020 Chevrolet Silverado 1500. The contact stated that while driving at approximately 45 MPH, there was an abnormal knocking sound coming from the engine compartment. The contact stated that the messages "Reduced Steering Assist”, "Check Engine” and "Service ESC" warning lights were displayed. The contact stated that the vehicle was losing motive power. The contact drove the vehicle back to the residence at reduced power. The contact had taken the vehicle to a local dealer, where it was diagnosed and determined that an engine rod was causing the knocking sound. The contact stated that the dealer had not yet determined why the other warning lights were illuminated. The vehicle was not repaired. The manufacturer was informed of the failure. The failure mileage was approximately 88,000.

The contact owns a 2020 Chevrolet Silverado 1500. The contact stated while driving 80 MPH, the transmission unexpectedly downshifted. There was no warning light illuminated. The vehicle was towed to the dealer where it was diagnosed and determined that the transmission had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 120,000.

defective 8-speed automatic transmission (RPO MQE, 8L45) in my 2020 Chevrolet Silverado 4x2 (VIN: [XXX] , 102,000 miles), purchased used from CarMax Orlando (6375 S Semoran Blvd, Orlando, FL 32822). The vehicle required a $5,950 repair at AAMCO Winter Haven (1350 6th St NW, Winter Haven, FL 33881) due to persistent transmission issues, including shuddering, jerking, or delayed shifting. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Hard shifting and shuddering

This transmission has shifted terribly since day 1. It currently has 114,000 miles. It would slip gears going up an incline. I was told the fluid was too slick. Fluid change at 30k. Started to stumble on downshift again. Fluid / filter change done. Brass, metal in filter/ pan. It will downshift so hard that it feels like you are getting rear ended at a stop light. 1-2 seconds after a complete stop, bam. Been down 9 weeks.

The engine blew a rod through the engine block and dealership replaced engine June 2023. January 2025 engine abruptly stopped while on the highway at 70 mph and now waiting on diagnostic test from dealership but after reading all the incidents regarding this engine I feel it’s another L87 engine failure from GM

This morning it was 16 degrees F I drove about 6 city miles at about 35 mph. I was 1.5 miles from home when leaving a stop light the truck bogged down and was only going up to about 25 mph with the tach at 2000 rpm. It seemed at first that I was driving with the parking brake on but most V8's have enough power to override the parking brake. This acted as if I was pressing hard on the foot brake while driving and giving it a lot of gas. I probably would have had to floor it to go any faster. But was afraid of damaging something. Put on the flashers and drove about 15 mph with the tach at 1500-2000rpm. The dash displayed "Brake system failure 62 mph top speed", "Service ESC", "Parking brake failure" and "Service trailer brake system", The brake pedal was changing its height by itself. Pulled to side of road and pumped the brakes several times, shifted the transmission through park, neutral, reverse and drive and it seemed to operate normally. Pulled onto road and it was bogging down the same. Pulled to side of road again. Then started driving again with flashers on and the tranny shifted as normal, but the brake pedal went to the floor. Pumped the brake pedal and it still went to the floor. Drove slowly while checking the brake occasionally but still went to the floor during the 5 blocks to my driveway. The brake had no effect. My driveway slopes slightly upward so I stopped safely. All four wheel centers and brake rotors were too hot to touch after slowly driving the 1.5 miles this occurred over. About 15 minutes later I turned on the key and the dash displayed "Brake system failure 43 mph top speed", "Service ESC", and "Service trailer brake system". Fortunately there were no vehicles close in front of me when this started and many were behind me when driving with my flashers on due to quite a bit of traffic. This could have been a disaster had it occurred somewhere else. The local Chevrolet dealer that services it has not seen it yet.

The Transmission is skipping gearing. There has been a recall for 2020 Chevrolet 1500 Silverado, but my vehicle has not been call.

We were driving on the highway when we attempted to make a turn the Steering wheel would not turn. We almost had an accident. I, [XXX], the Driver, had to swing out, and force the steering wheel to turn to get out of traffic. The service steering system with care light and the ESC Light came on. My truck is not that old and should not experiencing this type of problem. This was a very frightening experience that I don't want to go through this anymore. I call the dealership that I purchased the truck from and learned that other models had a recall on the same issue, but my 2020 had no recall on it. So therefore, they did not have to work it in to fix it. So, I'm reporting the issue so that no one else have to experience what I did. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The contact owns a 2020 Chevrolet Silverado 1500. The contact stated that while driving at an undisclosed speed, the vehicle briefly hesitated and experienced hard shifting before returning to normal functionality. The vehicle had returned to normal functionality, but the failure became a regular occurrence. No warning lights were illuminated. The vehicle was taken to the dealer, who was unable to duplicate the failure. The vehicle was not repaired. After investigating the failure, the contact related the failure to NHTSA Campaign Number: 24V797000 (Power Train); but the VIN was not included. The manufacturer was not notified of the failure. The failure mileage was 60,000.

Upper control arm ball joint separated.

The contact owns a 2020 Chevrolet Silverado 1500. The contact stated that while driving 50 MPH and making a turn in the opposite direction, the vehicle lost motive power and there was an abnormal knocking sound coming from the engine. There was no warning light illuminated. The contact was able to pull over to the side of the road. The vehicle failed to restart and was towed to the dealer, where it was diagnosed and determined that the rod and the lifters had failed, causing damages to the upper half of the engine. The dealer replaced the gaskets, the rods, the guides, the lifters, the camshaft, and the transition kit. Additionally, and oil change was performed. The vehicle was not covered under warranty and was repaired at the customer's expense due to the mileage. The contact stated that while driving approximately 65 MPH on another occasion, the vehicle made an abnormally loud clunking sound and lost motive power intermittently. There was no warning light illuminated. The contact pulled over to the side of the road. The contact drove back to the residence. The vehicle was taken back to the dealer, where it was diagnosed with cylinder #8 intake valve failure. The vehicle was repaired at the contact's expense. The manufacturer was notified of the failure and a case was filed for the cylinder #8 intake valve spring replacement. The manufacturer referred the contact to the NHTSA Hotline to report the failure. The failure mileage was approximately 86,000.

On January 17, 2025, I was approaching the entrance ramp unto Interstate 10, traveling along at approximately 40 miles an hour, when all of a sudden I noticed that my vehicle started decelerating as I was pressing on the accelerator, trying to merge onto oncoming traffic. The engine started shuttering and vibrating violently! I noticed all the warning lights, gauges and indicators had come on simultaneously! There was a loud clicking sound coming from the engine compartment and backfiring coming from the exhaust. I evaluate the situation at hand and conduct a risk assessment of trying to continue on with this problem but decided to move over to the median. I was almost run into from the rear due to lack of power in which I felt would have been the result of my truck just losing power without any warning. I drove my truck to a Chevrolet dealership after speaking with a Service Advisor, on January 20, 2025. The Truck was diagnosed as needing to replace Cam Rod and Lifters.

Upon entering a roadway from a parking lot I noticed my vehicle struggling to gain speed. I lifted my foot from the gas pedal and the truck rapidly reduced speed, dropping from 25 mph to less than 5mph in a couple of seconds. I then reapplied the gas pedal to attemp to avoid the vehicle approaching from the rear. The truck struggled again to gain speed. I went about 150 yards toward an intersection. I applied the brake and pushed it to the floor as the truck barely slowed to a stop. Had there been any vehicle stopped in front of me I would have hit it and pushed it into the intersection. The dashboard lit up with warning lights and rotating messages such as, Brake system failure 62 mph top speed, Service trailer break.when the traffic light turned green I drove it across the intersection into a parking lot, going about 5 mph for 50 yards. Putting my foot back on the brake as hard as I could. It finally came to a stop about twenty feet farther than it should have. I had it towed to a Chevrolet dealership. They did a diagnostic test and checked all braking components. They found a service bulletin for recalibration of brake system control module. They preformed the calibration and cleared the codes. After reading the many reports of this happening on the NHTSA site and the absolute possibility of injuries and deaths, I find it hard to believe that with knowing this problem exists and it’s disastrous potential, that there has not been a recall after 5 years of complaints.

From the time my vehicle had 30,000 miles on the engine, the engine light would come on and stay on with no apparent reason. I would take my car to my local Chevrolet dealer each time (by this time the light had gone out) and they could not find a problem. One technician told me that it sounded like a lifter problem that they were experiencing with these model vehicles. This happened approximately 8 to 10 times before the lifter failed. In January 2025, while driving on the Interstate Highway I experienced a sudden engine vibration and immediate 50% loss of power. Upon returning home, I took my truck to my local Chevrolet dealer where I purchased my vehicle. Upon inspection, I was told that it was apparent that a hydraulic lifter had failed. I left my vehicle at the dealership for the repair of the failed lifter which cost me $4,800. Two months later, I experienced the same problem with the engine, more violently vibrating. I again took my vehicle to the dealership and they confirmed another lifter had failed and took it in for repair under warranty from the prior lifter repair. I had again experienced more than 50% engine loss and had to get off of the interstate and travel on a side road because I could not maintain a speed over 45 to 50 mph. They repaired the same failed lifter bank that they had repaired the first time. Now, I am holding my breath, just waiting for the lifters on the other bank to fail for me to have to put in another $4,800-$5,000. I believe that this is an engine flaw that Chevrolet knows about. They have done nothing to fix this issue and have left it on the backs of the customer. Chevrolet needs to be accountable for these types of problems!

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.

Excessive Oil consumption from new and lifter failure at 116,000 miles