While driving down the highway on 11/03/2024, the engine warning light started to flash, I heard a clicking & Clanging noise so I pulled over as soon as I could find a safe place. Turned the ignition off & on again & engine warning light did not come back on, but still heard noises coming from engine. When driving home, the engine warning light came on again. I stopped again & turned the ignition off. When I turned it on again, the warning light quit flashing. I drove to the local GM dealer the next day, and they said it was a lifter problem. I did some research and found there were many lifter problems for a 2021 Silverado that I owned. I was hoping the dealer would replace both sides of lifters as they told me there was an issue & they were reengineered. Service department employee said they could only replace one side as that was all GM would approve. I told the employee that I did some research & there was a bulletin that said if mileage was less than 16,000 miles, both sides should be replaced. The employee said you surely have more miles than that & I showed her my odometer reading of 14,528. Again the employee told me that was all that GM would approve. I believe this is a safety issue if there is not a safe place to pull over. Also there should be a recall to replace these lifters with the reengineered lifters or extended warranty so us consumers are not stuck with a huge bill in the future as GM is aware this is a chronic problem.

- Bloomer, WI, USA

When I started my truck in the morning a group of warning lights came on. This included check engine, ECS control, Parking Brake service I took truck to dealer that said I had bad or broken lifter in cylinder # 6.

- Andover, NJ, USA

Lifter failure of the right bank in 2021 at 19,000 miles. At the time of failure engine was 2.5 quarts low on oil. Ever since, this truck has been using oil excessively. I am currently involved with an oil consumption test. Of which over the last 5k miles I have had to have more oil added by the dealership.

- Darlington, SC, USA

I took my car to the dealership four times because the engine light and the ESC light kept coming on. It kept saying there was a misfire so they changed the spark plugs and did a gas treatment after I left the dealership the light came back on so I returned the next day. They change one wire that-??s what they told me. The problem was so I left engine light came back on. I returned the next day then they changed the wires I left the facility again. The next day I got them started the car, the same problem, engine light, and the ESC light and now they have the car in the shop and they need to break the engine down to see what-??s causing the misfire and to find out if I need a new engine or not. Who is all that sh*t right now?

- Chicago, IL, USA

Multiple times at varying speeds my 2021 Silverado has produced engine misfire codes. I have never been able to get to it quick enough to see what cylinders are misfiring so it always gives me a general P0300 code. The following first two times it was confirmed by Widrick truck and diesel in Carthage, NY. The last time it happened, the code disappeared before I would take it to the Chevy dealership. Widrick said they can-??t fix the problem because they don-??t know what it is, and Chevrolet denies there is a problem at all. The truck still has less than 50k miles on

- Watertown, NY, USA

driving on [XXX] in Idaho stopped at rest area went to restroom came out my truck was smoking lifted the hood fire started on top left of engine got safely from truck and called 911 truck burnt to ground. Since i was stopped i was not in truck but if i did not stop it could of been fatal. My insurance has the truck now waiting on them for their investigation. there was no warning of any kind no dings going off no engine lights on since it burnt to the ground dont know if it can be determined what caused it but it would be nice to know why a 2021 chevy silverado with 43000 miles on it would just start on fire just had it serviced a week before this happed at a chevy dealer their is no recalls on my vin number writing this so maybe if this happens again that they will find the problem before some fatalitiy. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Shelley, ID, USA

Cylinder 5 misfire due to collapsed lifter and bent pushrod. 3rd time this has happened. Dealer replace half of engines lifters at 4K miles, the other half at 19K miles and now it-??s occurred again even with all the lifters replaced in the engine.

- Summerville , SC, USA

My lifters gave out on a brand new engine with 4000 miles on it. Truck was currently at 60,000 miles on odometer. I was traveling 75mph when everything locked up and all my lights on my dash board lit up. Causing multiple cars to swerve around as I guided the limping truck off the highway.

- Bentonville , AR, USA

The contact owns a 2021 Chevrolet Silverado 1500. The contact stated while driving 45 MPH, there was an abnormal sound coming from the engine compartment. The check engine warning light was illuminated. The vehicle was taken to the dealer, who diagnosed a failure with the valve lifters, resulting in damage to the camshaft. The vehicle was repaired. After investigating the failure, the contact related the failure to Technical Service Bulletin Number: 19-NA-219. The manufacturer was notified of the failure but provided no assistance. The failure mileage was 160,000.

- Chickamauga, GA, USA

While traveling on Interstate, the Check Engine light, Electric Parking Break service light, and Traction Control Light displayed for about 10 to 15 seconds. They all turned off at the same time and have not turned back on since. No limp mode was Vehicle has Service code for Engine Misfire with no cylinder indication. Spark Plugs, spark plug wires, and Coil Packs have been replaced. Vehicle has random flashing Check Engine Light for about 20 to 30 seconds while traveling above 30mph. Vehicle hesitation (jerking back and forth) is observed at continuous speed at 45mph and 51 mph. Vehicle has been brought to dealership for evaluation with no repair being completed. Dealership is not able to replicate issue.

- Pass Christian, MS, USA

When you drive the truck for at least an hour then you turn it off the entire front like vibrates or shakes. It almost feels like something is still turning in the transmission but everything is turned off. This particular truck has already had the engine replaced at 14,000 miles bc it was faulty. It also has issues with tires. The radio and lights also all go off for brief time and then it comes back on. At times the drives side seat belt will lock and it pins you to the seat where you cannot move and you have to remove the seat belt. It is becoming more of an issue. I believe the transmission to be going out. Today, I wasn-??t sure if the vibration in the truck was going to stop. So I stopped driving the truck and went and got another vehicle to drive

- Lubbock, TX, USA

My check engine light came on. When taking it to the dealership, they say it's the Catalytic converter. The converter is not an electronic part, so we replaced the o2 sensors and the check engine light came back on. I've taken this truck to several people who repairs cars, and The vehicle is only 3 years old, should not need to be replaced. A converter should last 10-15 years. In doing some Research, I found the the 2019 recalled for the ECM module. Causing the same issue as the faulty reading on a catalytic converter. I am now out of warranty due to being 2,000 miles over the limit.

- Glenn Heights, TX, USA

Leaking radiator with no ETA on parts availability and this is also an issue with the coolant valve being on back order and both have many reports of this failing as well with some google searches. The dealership has my vehicle and has been inspected by them. I also do not understand why radiators are not apart of the powertrain when it cools the most critical part the engine. If the Radiator fails the engine fails.

- Las Vegas, NV, USA

The contact owns a 2021 Chevrolet Silverado 1500. The contact stated while driving at an undisclosed speed, the contact observed an excessive amount of condensation on the interior of the vehicle. The check engine warning light was illuminated. The vehicle was towed to the dealer, who diagnosed a failure with the lifters resulting in misfires in the engine. The dealer also determined that cracks in the rear windshield glass guides resulted in excessive condensation in the vehicle. The vehicle was not repaired. After investigating the failure, the contact related the failure to Technical Service Bulletin: 18-NA-383. The manufacturer was notified of the failure, a case was opened. The contact was referred to the NHTSA Hotline for assistance. The failure mileage was 9,000.

- Ukiah, CA, USA

The contact owns a 2021 Chevrolet Silverado 1500. The contact stated while his wife was driving on two occasions at approximately 20 MPH, the vehicle lost motive power and failed to exceed 20 MPH. The vehicle was towed to a dealer where it was diagnosed that the #2 lifter needed to be replaced. The vehicle was repaired but the failure reoccurred a few weeks later. Additionally, the contact stated that the vehicle stalled on three occasions while stopping and using the Auto START/STOP feature. The vehicle was not able to be restarted. On the last occasion, the brake pedal was depressed; however, the vehicle failed to stop as needed. The vehicle was taken to a dealer where it was diagnosed that another lifter needed to be replaced. The vehicle was repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 6,000.

- Grover Beach, CA, USA

A couple of days ago, noticed some coolant under my truck. Took it to a dealer who informed me that the radiator has a crack in it. The truck has just over 53,000 miles on it and the warranty doesn't cover the radiator after 36,000 miles. We keep it serviced as normal and there hasn't been any extreme weather here in Oklahoma lately to explain the this away. Just irritating to pay the kind of money you pay for something that has this kind of issue already.

- Shawnee, OK, USA

1. Trucks start/stop delays. When in traffic or crossing over lanes the truck fails to turn back on/start. When the truck does turn back on, the truck jumped forward almost sending me and my family into on coming traffic. 2. When trying to start the truck the starter will turn over constantly not turning on the truck (motor is turning over). The starter will time out after about 20+ seconds. The starter does this when auto start/stop is activated, so we get stuck in traffic almost causing accidents.

- Kahului, HI, USA

Lifter failure on bank 4. 23000 miles.

- Hogansville, GA, USA

"Cylinder 4 misfire" was the diagnostic code - the vehicle is currently at Millennium Chevrolet in Hempstead, NY. First attempt at a fix was the fuel injector - second fix is replacing the rocker arm. Emissions is still showing as an error. I was traveling to the dealership for repairs when the misfire became so bad that multiple alerts illuminated on the dash. I was in stop and go traffic at the time going 30 mph. Thankfully I was near a place to pull over out of the flow of traffic. I tow with my vehicle and just returned from a cross country trip - if this happened while towing up a grade in the western half of the country, I don't know what I would have done. Yes, the dealership confirmed the problem and it is under the powertrain warranty. I do not know if GM Engineers have inspected the engine, however, it has been in the care of a GM dealership and service center since [XXX]. [XXX] the check engine light illuminated for the first time, yet went off after.2 of a mile when I turned around to return home. I made an appointment with service at the dealership the next morning ([XXX]) and was on my way there when I no longer felt safe driving it and called for a tow truck. [XXX] - check engine came on and went off. [XXX] - check engine came on again. [XXX] - check engine - on the way to the dealership - service parking break, anti-traction control. This is when I pulled over because the vibration from the misfire of the engine became much worse. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Port Washington, NY, USA

On the evening of Dec 19th, our 2021 Chevy Silverado 1500 DuraMax with 19K miles on it caught fire, burned, and was declared a total loss. We were on our way to go pick up our travel trailer as were we leaving for a trip on Xmas with our 2 dogs and my brother-in-law. Smoke started billowing out from under the hood and within minutes the front end was engulfed in flames. I have pics/videos. We-??re ok but that was a scary situation that could have had a different outcome. We could have been on the highway towing our trailer with our 2 dogs and bro-in-law and who knows how long it would have taken the fire department to arrive on scene on the highway. There were no warning lights etc. to notify us. The truck gets driven, taken care of and I had just driven it the day before. We-??re not aware or have seen any recalls. All info is on our Chevy app. We filed a claim with our insurance, and it has been paid off now, but in reality, "our fault" in insurers eyes. No cause was determined. That being the case, GM has closed claim and say not liable for personal property lost in fire, as insurance didn't contact GM with any mfg defects and insurance has already paid off the truck. We are repeat Chevy customers. This was our 4th leased Silverado and we also have a Traverse. The lease on the burned-up truck was coming due May 2024. We way overpaid on the milage. We're not filing a homeowners claim for lost personal property as insurance has paid off the truck and we don't want to be dropped. My question is wouldn't this be under warranty" Should the truck not be replaced" We didn't cause the fire. Much more damage could have occurred. People and pets could have possibly been injured or worse. If we were towing our travel trailer, that would be another big loss. The truck is no longer "available". Insurance told me today it's being sold for parts, which honestly kind of scares me. I wouldn't want a truck part that was in a fire, damaged or not. Videos not attached.

- Carol Stream, IL, USA