The contact owns a 2021 Chevrolet Silverado 1500. The contact stated that the transmission shifted hard while depressing the accelerator pedal. There was no warning light illuminated. The vehicle was taken to the dealer and the TCM was reprogrammed; however, the failure worsened, and the vehicle hesitated while depressing the accelerator pedal. Upon investigation, the contact discovered NHTSA Campaign Number: 24V797000 (Power Train) and linked the failure to the recall. The vehicle was taken back to the dealer and the contact was informed that the vehicle was not under recall. The contact was referred to the NHTSA Hotline to report the failure. The vehicle was not repaired. The manufacturer was notified of the failure and a case was filed. The failure mileage was approximately 120,000.

- Celina, TX, USA

My truck is experiencing what is commonly known as the Chevy shakes. Whenever the transmission goes over 2000RPM or below 2000RPM my truck jumps. Also, the rear wheels lock up for a short time while I start driving for about 50 feet. Almost as the brakes are pressed slightly.

- Youngsville, NC, USA

Vehicle is shifting harshly. Looked up recalls. "Certain" 2021 Silverado 1500's have recall for transmission problem that can cause rear wheels to lock up and cause a crash. GM says my truck is not included in the recall. I have filed an official complaint with GM.

- Richmond, KY, USA

Repair & Breakdown Timeline -?" 2021 Chevy Silverado Owner: [XXX] and [XXX] VIN [XXX] Warranty: Extended vehicle warranty (active) Millenium ________________________________________ ??"? Repair History Summary Oct 2024 -?" Issue: Hard shifting; GM recall for purge pump -?" Action Taken: Purge pump replaced under recall -?" Status: Returned to owner Nov 19, 2024 -?" Issue: Continued shifting problems -?" Action Taken: Transmission replaced -?" Status: Vehicle kept until Feb 2025 Feb 12, 2025 -?" Issue: Vehicle returned to owner -?" Action Taken: GM reimbursed car payments during downtime -?" Status: Returned to owner April 2025 -?" Issue: Loss of power; wouldn-??t shift past 15 mph -?" Action Taken: Generic transmission code cleared, no fix -?" Status: Returned with unresolved issue June 9, 2025 -?" Issue: Random downshifting; RPM/speedometer erratic -?" Action Taken: External TCM wire replaced -?" Status: Returned June 11 June 18, 2025 -?" Issue: Recurring downshifting issue -?" Action Taken: Internal TCM wire replaced -?" Status: Returned June 25 June 27, 2025 -?" Issue: Hard downshifting, braking sensation during acceleration -?" Action Taken: Returned to shop -?" Status: Ongoing -??7 total repair visits, 4 of them since February 2025 transmission replacement -??Symptoms continue despite following GM-??s repair instructions -??Dealership has followed GM repair guidance each time -??Vehicle remains a safety risk, especially with children onboard -??Similar Silverado models have recalls, but this VIN is not include I have two young children, and this vehicle has now placed us in extremely unsafe situations multiple times. We-??ve been stranded in traffic, unable to accelerate, and fearful for our safety. Despite repair after repair, the problem continues. At this point, I do not believe this truck can be fixed, and I am unwilling to keep driving it-?"or trade it in knowing another family could end up in the same dangerous situation. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Ada, OK, USA

As I am driving, the truck shutters off and on and its shifts hard when shifting gears. I drive long distances daily and if the transmission fails, this could cause an accident that could put the safety of my children-??s lives, or mine, at risk. It has not yet been inspected, but I spoke with several transmission specialists and have been told this is a very common issue among 2021, and other year models close to that, Chevrolet Silverados. The cost for confirmation would be upwards of $1000, which is not something I am able to afford. There have not been any warning lights or lamps. Only shuttering and harsh shifting.

- Pollock, LA, USA

Unknown transmission failure

- Pana, IL, USA

The contact owns a 2021 Chevrolet Silverado 1500. The contact stated that while driving at various speeds, the transmission was shifting hard. The contact stated that the failure recurred while driving at 70 MPH. The vehicle was taken to the dealer where it was purchased for diagnostic testing, but the cause of the failure could not be determined. The contact used a scanner and retrieved DTC: B3205-4B-BCM, and a message that the steering column circuit was locked. Additionally, the scanner displayed a notification of NHTSA Campaign Number: 24V797000 (Power Train); which the contact related to the failure. The dealer informed the contact that the VIN was not included in the recall and referred the contact to a Chevrolet dealer for assistance. The vehicle was not repaired. The manufacturer was notified of the failure and informed the contact that assistance could not be provided because the VIN was not included in the recall. The failure mileage was approximately 100,000.

- San Angelo, TX, USA

My vehicle started shuttering approximately after 128,000 miles. I took it to a Edwards Chevrolet dealership near my home to have it serviced. I wa told that the transmission was going out and needed to be replaced.

- Chelsea , AL, USA

At approximately 67,000 miles I noticed upon starting and putting it in gear the motor would rev/clunk while going into gear. Shifting from one gear to another the truck would shutter. Did not feel safe driving any distance because the truck would lock up when trying to put it in gear. I had the truck looked at after reading numerous complaints about this 8 speed transmission and wanted to make sure it was safe to drive. After test driving it a couple of times during the course of a day it was determined the transmission needed to be replaced/rebuilt. At no time did any warnings appear on the display indicating there was an issue. I had the transmission rebuilt but feel like there are many complaints and no recalls regarding this same issue.

- Annapolis, MD, USA

Transmission is changing hard and jerking

- Gray Court, SC, USA

Vehicle started with vibration at speed 45mph and sometimes it gets worse already balance the wheels twice and same issue so I took it to another shop and they found that my vehicle has hesitation and shuddering also really hard down shift

- Las Vegas, NV, USA

At 2000 miles my truck developed a new -??fluttering-??, -??ticking sound-?? once all cylinders reactivated as apart of the dynamic fuel management system. After bringing the truck to dealership, they proceeded to replace the lifters, the exhaust system twice, and performed a computer reflash. The truck was at the dealership for over 45 days within the first 6 months of ownership. After all the repairs, the sound is still audible and getting worse. In addition to this sound, at around 30,000 miles the transmission has now developed an audible clunking sound that can be felt once on release the gas peddle under slower operating speeds. After trying to engage with GM on simply understanding what the problem is and why there is the need for so much repair on a brand new vehicle, I am candidly fed up and let down as long term GM customer.

- Snohomish, WA, USA

Pulling out to an intersection my 2021 chevy Trailboss stopped going forward. All I had was reverse. Fortunately cars stopped and no one was injured. The truck was towed to a chevy dealership and was inspected and said that the transmission went out on it. The service manager told me that the "transmissions that were put in these trucks were not good" No warning lights ever came on prior to this incident. There was a recall for transmission problems for other chevy models however I have been told that my truck does not qualify for the recall.

- Wayne Twp, OH, USA

The truck, while driving at highway speeds on the interstate, experienced catastrophic engine failure, seizing the motor while in driving. Luckily, I was able to pull the truck to the side of the road safely, without a crash occurring. Losing engine/braking power could have been a major concern but thankfully, traffic was light enough I had space to pull to the side of the road. The truck had to be towed to the nearest dealer, where it was discovered the motor had seized. 2021 Chevrolet Silverado Trail Boss 6.2L motor with 47k miles on the factory warranty/no modifications. Since taking the truck to the dealer, they warranty-swapped a remanufactured crate motor in the truck. Hearing of the major increase in issues with this truck, I traded it in on a different manufacturer and now have a different vehicle. Aside from this huge inconvenience and safety issue, GM's customer support line failed to cover the full cost for a rental truck while my vehicle was down for a new motor (late November 2024 until mid January 2025) and I still have yet to receive a refund for my tow bill. This experience that has now lasted almost 6 months (still with no resolution) has been horrible. I hope General Motors is held liable for this major issue.

- Groveland, FL, USA

Shuddering when driving. Erratic shifting and downshifting.

- Montgomery, TX, USA

this is 6.2 l l87 engine that is being recalled but this vin is not on list. already had lifters and rods replaced while back. coming home from trip truck made awful noise and I lost power on the interstate. thankfully was able to get out of traffic but waited 3.5 hours for tow. at dealer but cant tell me when they can look at it. 60,200 miles and they are saying well we will see what we can do but your powertrain warranty ended at 60k. i have had numerous problems and these are all known by gm especially 2021 6.2l.

- Stroud, OK, USA

The contact owns a 2021 Chevrolet Silverado 1500. The contact stated that while driving on several occasions at various speeds, the temperature gauge remained at hot (Hot) location, with a dinging warning notification. The check engine and "Transmission idle temperature high" messages were displayed. The vehicle was steered to the side of the road each time and turned off for approximately 45 minutes to allow the vehicle to cool down. The vehicle was taken to a dealer where it was diagnosed and determined that the transmission needed to be replaced. The vehicle was not repaired. The vehicle was then taken to an independent mechanic where it was determined that the transmission needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 115,000.

- Mckinney, TX, USA

I purchased this truck 3/20/2025. I have since realized it wasn't me doing something wrong. The truck hesitates and shakes during shifting upon acceleration from a stop and when putting it in park and attempting to turn the truck off it has a message on the display saying "shift to park" and it will not turn off until you repeatedly restart it and play woth the gear shift to get it to register that it's in park. I have made an appointment to take it to the dealership to be looked at. The truck has 75,000 miles on it.

- Wallisville, TX, USA

The engine rods went bad in the engine and damaged the cam shaft. The vehicle only has 71000 miles on it. The resulting repairs cost approximately $8000. We have been told by the Chevy dealer doing the repairs and also the dealer we bought the truck from that this is a known problem and they have had several vehicles with the 5.3L engine that have needed this same repair.

- Buena Vista, CO, USA

While driving about 75 miles an hour, when the gear was shifting back-and-forth between about seven and eight, there was a loud bang. It happened again with a bang that was not as loud. Something with the transmission. Only have 36k miles on it.

- Chandler, AZ, USA