On my 2021 Chevrolet Silverado 1500 Custom, I began noticing an issue around 79,000 miles where the vehicle did not come to a complete stop as smoothly as expected. Initially, I suspected the brakes, as I purchased the truck new and had not performed any brake maintenance up to that point. I scheduled an appointment with the dealership to have all four brakes replaced; however, upon inspection, I was advised that the brakes were still in good condition, with approximately 90% life remaining. I then completed a test drive with the shop foreman, who was able to replicate the concern to some extent and suggested that the issue may be related to the transmission. At this time, the dealership is in the process of disassembling the transmission to determine whether the issue can be resolved with a repair or if a full replacement is necessary. It is concerning that such a significant issue would arise at approximately 80,000 miles. Based on similar reports I have reviewed, this appears to be a relatively common concern within the 80,000-?"90,000 mile range. Additionally, this poses a serious safety concern, as the vehicle-??s hesitation in coming to a complete stop nearly resulted in a rear-end collision while en route to the dealership. There have been no dash lights on.

- Lewistown, IL, USA

I was accelerating to 45MPH on a main road. My truck was running just fine. At about 45 MPH it felt like I hit a wall, and my truck started to rapidly decelerate and seemed to be downshifting very hard. A reduced engine power warning appeared in the message display, and the check engine light illuminated and began to flash. I luckly the car behind me was able to change lanes quickly and missed me and I was able to pull off the main road and turn off the truck. I let it sit for five minutes and restarted the truck. When I did, the truck seemed to drive at 25 MPH, and I kept it at that speed and was able to get it to my work down the road. When I got to work, my company's mechanic ran the code. A P2732:00 Transmission control solenoid valve 6 stuck off and P0700:00 transmission control module requested MIL illumination codes came up. We also noticed my truck no longer went into reverse and the engine would just rev and nothing else happened. I had the truck towed to the Chevy dealer who also got a P2732 error code. The truck as been at the dealer for the last two weeks and I have not told them to fix it yet.

- Chesterfield , MI, USA

Rough shifting in low gears, can be dangerous in intersections due to low acceleration ability. The check engine light is on for replacement of Transmission Valve Body Assembly.

- Butte, MT, USA

The transmission has been having issues for the past couple days. It is the 10 speed model and I have noticed everyday for the last couple days that there is an unusual shifting pattern between 25-60mph. This is sometimes accompanied with a shudder that feels like going over rumble strips without the sound. The feeling is not constant, but I will come to a complete stop and under light acceleration it will return. Under hard acceleration it is not noticeable. However, I am concerned with the unusual shifting. It can happen at a constant speed where it will do a random shift up or down or under light acceleration it will feel like it-??s slipping for just a second. The vehicle has 99,900 miles on it and there are no warning signs or lights active. The vehicle is about to be serviced to do an inspection to find the underlying issue. This is a safety concern because the vehicle could potentially cause more damage to the transmission and with the random shifting, could potentially cause an accident.

- Clearwater, FL, USA

Hard shifting in most lower gears, slipping gears, shuddering in higher gears

- Pooler, GA, USA

On August 10th 2025 I was driving down the 5 freeway to the airports All of a sudden I notice my check engine light is on. It was Sunday Chevrolet is closed so I got off the exit to go to auto zone in XXX. I stop at a red light my engine shuts off. I tried to turn it back on twice and it starts to smoke where the battery is. I have it towed to Chevrolet Fairfield. Where they figure out my ground wire came loose and shorted out. I paid for that to get fixed upon returning to get my vehicle on August 31, 2025 I drive not even 10 miles down the road and I hear a boom and then really loud clanking. I blew my engine. It was diagnosed with the same problems as other 6.2 gm motors. I have it towed back to Fairfield Chevrolet. It sat in Fairfield for a couple months due to me working out of town for work and the manager from Fairfield Chevrolet started giving me problems harassing me saying that if I didn-??t get it off of his lot he was going to start charging me. So I had it towed from Chevrolet Fairfield to my house in [XXX] where it has sat since. I have been going back and forth with Chevy because I know of the recall however my vin is not in that recall yet it is the same problems as all the ones with the recall. I am really wanting to fix my vehicle as it has been almost 9 months. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Redding , CA, USA

The rear wheels suddenly locked up while driving. It did it twice then the check engine light came on and then the transmission would not shift into gear until I turned off the truck and turned it back on. This happened 3 days in a row all while driving. Exactly the same. No prior symptoms or warnings before the incidents happened. The vehicle is currently at the dealership being inspected. There is a recall (N242454440) that addresses this issue but I'm being told that my truck is not covered under that recall because my VIN is not part of it.

- Houston, TX, USA

The contact owns a 2021 Chevrolet Silverado 1500. The contact stated that while driving 20 MPH, the vehicle lunged forward while the accelerator pedal was depressed after the brake pedal was depressed. While the contact-??s husband was driving approximately 78 MPH and attempting to accelerate, the transmission light drive(D) started flashing, and the transmission unexpectedly shifted to neutral(N). The driver was able to coast to the side of the road, depress the brake pedal, and wait for a while before continuing to drive. The vehicle was taken to the dealer to be diagnosed; however, there was no cause for the transmission failure found. The vehicle was repaired. The manufacturer was informed of the failure, and a case was opened. The manufacturer referred the contact to the NHTSA Hotline to report the failure. The failure mileage was 63,000.

- Gastonia, NC, USA

My vehicle has been at the dealership since February 4 due to a transmission failure involving the valve body, which is currently on national back order along with the converter. These parts are required to complete the repair, and the vehicle is not drivable. This issue occurred after previous major repairs, including engine lifter replacement and a CV axle repair. It has now been 71 days without a repair. The dealer has confirmed the failures, but the manufacturer has not provided a repair timeline or a definitive solution. I have not received consistent updates since March 19, and the vehicle remains out of service with no estimated completion date..

- Jacksonville, FL, USA

The electronics freeze up and sometimes the stereo turns off and won't come back on. The transmission perks and then revs up then hits gear and kicks real hard. The transmission feels like it's going to vibrate out from under the truck going down the road at certain speeds!

- Fairview, WV, USA

I'm reaching out to hopefully prevent a horrific situation not only to myself or any other GM owners. My vehicle has been diagnosed with having a faulty transmission valve body. There are so many that have failed that the dealer cannot give me a time when the part will be available. Because my vehicle is out of warranty, they are not willing to help. When I looked online it said as of late 2024 there were at least 1,888 field reports were identified.

- Tequesta, FL, USA

- What component or system failed or malfunctioned, and is it available for inspection upon request" High pressure fuel pump, lifter, and cam shaft failure. - How was your safety or the safety of others put at risk" Potential crash w/ kids in truck, loss of power, surging, engine damage, etc.. (fuel pump) Potential crash w/ kids in truck, engine seizure, severe engine damaged, metal fragments, loss of power, abrupt lock up, fire hazard, excessive noise, etc.. (lifter/cam shaft) - Has the problem been reproduced or confirmed by a dealer or independent service center" Yes confirmed by dealer Hiley Chevorlet, case # xxx w/ General Motors. - Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? Yes by service dealer Hiley Chevorlet, case # xxx w/ General Motors. - Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear" No, no check engine light or messages. Bought the 21' silverado about 18 months ago, recently the truck began to sound and drive terrible, it was found to be a bad high pressure fuel pump, bad lifter, and damaged camshaft. Dealership acknowledged that these are common issues w/ this model & year of vehicle and the parts are defective parts that they use in the manufacturing process of this model. They deemed it was out of warranty range as it's still under year 5 however I exceeded the powertrain warranty by 10,000 miles so they will not cover the issues and damage.

- Royse City, TX, USA

On 03/13/26, I was taking a family trip when all of a sudden my 2021 chevy silverado (with 6.2L v8) began to lose power and shake uncontrollably causing me to make an emergency roadside stop. Fortunately, traffic was light and I was able to avoid a collision. I immediately heard a loud knocking sound coming from my engine and several check engine safety lights were displayed. On 3/16, I brought my truck to a local GM dealership and was advised that I needed a complete new engine replacement due to catastrophic engine failure because my rods and crankshaft had blown in my engine. The dealership checked for recalls on my truck but were surprised that my vin did not pull up a recall even though there was a recent major engine recall (# N252494000) issued for my exact model truck with the same issues my truck displayed. It should be noted that my vehicle had less than 24,000 miles on it and I have kept up with regular oil change and maintenance service and that before this issue I have had zero issues with this vehicle. To make matters worse my powertrain warranty expired 2 months prior to this incident so I am having to pay out of pocket over $12k for a new engine. On 03/19/26, I contacted Chevy but was told there was nothing they could do for me and stated that NHTSA would have to get my vehicle added to the recall. I am requesting that my vehicle and others like it get added to this massive engine recall so I can get reimbursed for my new engine and also to protect other families from possibly being involved in a major unavoidable crash. Thanks in advance for your help!

- Lake Charles, LA, USA

The contact owns a 2021 Chevrolet Silverado 1500. The contact stated that upon shifting to park(P) and attempting to turn off the vehicle, the message "Shift to Park" was displayed, and the vehicle failed to turn off unintendedly. The contact stated that upon jiggling the gear shifter, the vehicle responded as intended. The contact stated that the failure recurred intermittently. The contact stated that the failure recurred upon arriving at the residence at 1:00 AM. The vehicle was able to turn off after being reset by temporarily disconnecting the battery. The dealer was contacted, and an appointment was scheduled for a diagnostic test. The vehicle was not yet diagnosed or repaired. The manufacturer was notified of the failure and informed the contact that the vehicle was not covered under a related lawsuit settlement. The failure mileage was approximately 53,000.

- Little Mountain, SC, USA

I purchased this vehicle Oct 2024 from CARMAX Tallahassee FL. When I test drove the vehicle I noticed a pause when it was placed in drive. The after about 10 seconds it would engage and begion moving (49,000 miles). I told the dealer and the said it my be the torque and advised me to take it to the GM dealership. I did take it 4 times. The said they adjusted the transmission software, but the problem persisted. Now the manuafactures warranty has expired and the vehicle is much worse now. It atcually throws a check engine light. I went to auto zone for the plug in tester to fine out what the code was. P0700, P0746, P2714. The truck will completely lock and not move. This vehickle has not perfomred properly since my purhcase and I taken it to the dealer x4. Something need to be doner and it shoulod be included iin the recal to be repaire.

- Quincy, FL, USA

My 2021 Chevrolet Silverado, with approximately 84,000 miles, experienced a premature and catastrophic transmission failure while driving. The vehicle began to shudder severely and lost its ability to accelerate properly, creating an unsafe driving condition. I was able to get the vehicle to a dealership. The dealership diagnosed a complete torque converter failure requiring a full transmission replacement. Crucially, at no point before or during this failure did the vehicle's onboard diagnostic systems provide any check engine light or warning message. A sudden loss of power and transmission function on a highway is a major safety risk. I believe this is a widespread defect that needs to be investigated before it causes a serious accident.

- Murrieta, CA, USA

UNKNOWN. I have had issues with my vehicle since the purchase. Very subtle in the beginning, then it became more noticeable. There was a recall issue with a valve in the operation of the transmission, this issue is now affecting the shifting into different gears. The other day a vehicle ran a red light and my wife and I were in the intersection. I tried to accelerate to get out of the way, but here was a delay before the truck's transmission engaged. Luckily it did engage and the collision was avoided. This is a serious issue, an issue that shouldn't exist, an issue that the manufacturer knew about. I would like someone to investigate this and hopefully, help me with this issue. [XXX] [XXX]. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Chino, CA, USA

On a very cold day in January I left work to head home in 4-high. Just before I got on the highway, the truck did a hard shift from 1st to 2nd and I felt kind of a clunk. Truck immediately threw a check engine light and went into limp mode (didn't seem to shift at all). Pulled into a parking lot and tried to go in reverse, but truck would not go into reverse. Truck was towed to local dealership where they diagnosed it with a failed valve body on the transmission. Dealership told me the valve body was on back order so I then towed the truck to a local transmission shop who changed out the valve body. Transmission had no issues before this. The morning this happened it was very cold (below zero) and I got a message in the truck that said, "heater performance mode active". Thought that was weird, but dealer did not seem to think it had anything to do with the failure.

- Norton Shores, MI, USA

Belt tensioner/idler pulley began chirping during warm up after starting engine. Noticed serpentine belt was beginning to fray on edges. Dealership confirmed the pulley failed prematurely and caused the serpentine belt to be damaged. Dealership replaced pulley and belt. It was just after warranty expired. The belt is supposed to be replaced at 100,000 miles as routine maintenance, but the failure of the pulley, which the dealer informed me was also premature, but common, was not covered under warranty. Power steering was lost one time in park and a message showed on the dash, but went away after restarting the vehicle.

- Townsend , GA, USA

Transmission began shifting hard over between 60500 and 62000 miles. Dealership test drove and confirmed it was not normal. The transmission pan was dropped and contained metal shavings and bits. Dealer replaced transmission. During late February 2026, I began noticing some hard shifts again, but am hesitant to pay another $699 diagnostic fee and replacement transmission cost because I feel I am wasting money on a poorly designed and unreliable transmission. I don-??t feel confident relying on this vehicle for transportation to medical appointments anymore.

- Townsend , GA, USA