The transmission is making a clanking noise during the lower gears. The local dealer said the transmissions is "done for". The truck has around 125,000 miles on it. The truck is available for inspection. When checking for recalls, i saw the GMC were being recalled for the same issue.

- Murphysboro, IL, USA

Vehicle: 2021 Chevrolet Silverado 1500, 3.0L LM2 Turbo Diesel Mileage at most recent failure at 106k miles Complaint Narrative This vehicle has experienced repeated, serious defects affecting engine, transmission, emissions system, and safety recall performance. Despite numerous repair attempts over three years, the problems remain unresolved and the vehicle is currently undriveable and held by the dealership (since August 17, 2025). Key safety concerns: Transmission failure: Transmission catastrophically failed at 78,942 miles due to excessive metal contamination, requiring full replacement. Transmission issues have persisted even after replacement. Recall N24254440 (rear wheel lock-up): Dealer attempted recall repairs multiple times in 2025 but failed due to programming errors. Recall remains incomplete and unresolved. Hard starting / reduced power: Vehicle intermittently fails to start or loses propulsion, creating risk of stalling in intersections or traffic. Engine/emissions failures: Multiple check engine events with NOx sensors, exhaust differential pressure sensors, and coolant flow valve failures. Current status: Vehicle has been in dealer custody since Aug 17, 2025, with no completion date. Dealer reports unresolved oil leak, check valve/box sensor replacement pending, and open recall not fixed. The cumulative history shows systemic defects across powertrain and emissions systems, ongoing safety recall failures, and lack of durable repairs. I am providing all invoices, videos, and documentation upon request. --- Chronological Service Timeline Invoice #Mileage (in/out)DateReported Issue / Repair Attempt 33432337,290 -?' 37,62607/11/22 -?" 07/30/22Check engine light. Multiple fault codes. Dealer performed diagnostics, suspected exhaust leak, removed components for inspection. 33433837,450 -?' 37,50807/

- Wahiawa, HI, USA

The transmission shudders during light throttle at cruising speeds and low rpms, tachometer show continuous jumps in rpm and vehicle loosing power. No check engine lights. Concerned that transmission behavior can make the vehicle a hazard on highyways. Shuddering and hesitation on acceleration. Transmission fluid was changed at 70k miles and symptoms still persist. Current mileage 71k.

- Sonoma, CA, USA

The contact owns a 2021 Chevrolet Silverado 1500. The contact stated that while driving off an off-ramp at approximately 40-60 MPH and depressing the brake pedal, the vehicle suddenly lost power and turned off. The contact restarted the vehicle to continue driving. The failure had occurred twice. The contact stated that while driving at various speeds and depressing the brake pedal, the brakes grabbed, causing the vehicle to lunge forward, decelerate, and then lunge forward again, before coming to a complete stop. The contact shifted to park(P) and then to drive(D) and continued driving. The check engine warning light was illuminated. The vehicle was taken to the dealer four times before receiving notification of NHTSA Campaign Number: 24V797000 (Power Train). The dealer was unable to determine the cause of the failure. The vehicle was taken to the dealer, and the recall repair was performed. The contact stated that one hour after the recall repair, the failure recurred with the check engine warning light illuminated. The dealer was informed of the failure; however, the vehicle was not diagnosed or repaired again. The manufacturer was informed of the failure. The manufacturer referred the contact to the dealer for assistance. The failure mileage was approximately 56,000.

- Valdese, NC, USA

The contact owns a 2021 Chevrolet Silverado 1500. The contact stated that while driving approximately 15 MPH, after making a left turn at a traffic signal, the rear wheels locked up. The contact stated that there was an abnormal screeching sound while depressing the brake pedal in a panic stop, and the vehicle jolted violently. The contact stopped the vehicle with the engine still running and observed the "Service Engine Soon" message displayed. The contact attempted to drive forward, and the rear wheels locked up. The contact was able to drive the vehicle to an Auto Parts store. The contact stated that a store representative used a handheld scanner and was able to retrieve DTC: P0747 (Transmission Valve Body #1 Open). The vehicle was not taken to a dealer or independent mechanic. The vehicle had not been diagnosed or repaired. The manufacturer was not informed of the failure. The contact researched online and related the failure to NHTSA Campaign Number: 24V797000 (Power Train); however, the VIN was not included. The failure mileage was approximately 140,000.

- Prattsville, AR, USA

General Motors is selling vehicles that are unsafe, unreliable, and unfit for consumers. My experience shows a clear pattern of negligence, misrepresentation, and disregard for public safety. On or about April of 2021, I purchased a 2021 Chevy Silverado RST z71 from Vetter chvrolet for about $56,000. GM promoted this vehicle as safe and dependable. Within the short 4 years of owning this truck, I faced major failures: engine issues, transmission problems and electrical malfunctions causing the parking break to engage on its own, at highway speeds of 70-80 mph on which nearly caused a serious accident, and failed Electronic Stability Control (ESC) system. This system helps maintain vehicle control, and a problem with it can affect braking, steering, and handling, Despite following GM-??s maintenance guidelines, GM delayed repairs, denied coverage on certain failures, and left me with thousands in out-of-pocket costs. The vehicle remains unreliable and unsafe. For myself and my family, 2 children under 3 years old and one on the way. This is not an isolated issue-?"GM has a long history of recalls and defect cover-ups. These vehicles put lives at risk, cause financial hardship, and violate consumer trust. No one should fear for their safety in a vehicle marketed as -??dependable.-?? This has impacted me by having : -?? Expensive repairs -?? Loss of transportation for extended periods -?? Ongoing fear of driving a defective vehicle with my family in it. Loss of use of my vehicle -?? Fear and emotional distress driving an unsafe product I have contacted GM and the dealership multiple times. Responses were dismissive, repairs were inadequate, and GM refuses accountability. Requested Resolution: Full reimbursement for all related costs Buyback (preferred) of the vehicle OR permanent repair at no cost Public acknowledgment and stronger quality control. Warning to Consumers: Think twice before trusting GM. Their failure to correct dangerous defects shows profits matter more than safety.

- Three Rivers, MI, USA

The contact owns a 2021 Chevrolet Silverado 1500. The contact stated while driving from a complete stop, and while driving at various speeds, the vehicle jerked abnormally, and the transmission shifted hard. There was no warning light illuminated. The vehicle was taken to the dealer, where it was diagnosed with transmission failure. The contact was informed that the transmission needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 160,000.

- Fort Mitchell, AL, USA

The contact owns a 2021 Chevrolet Silverado 1500. The contact stated that while driving 30 MPH, the rear wheels locked up, causing the vehicle to slide across the road. The contact was able to regain control of the vehicle and came to a stop in the middle of the road. The check engine and traction control warning lights were illuminated. The contact turned off and then restarted the vehicle and became aware that the transmission failed to shift into the intended gear. The vehicle was towed to the contact's place of employment. The contact who is a certified mechanic performed a diagnostic test and retrieved DTC: P0747, indicating a failure with the pressure control cylinder in the transmission. The contact also found information on NHTSA Campaign Number: 24V797000 (Power Train); however, the VIN was not included. The vehicle was not repaired. The dealer was contacted and confirmed that the VIN was not included int the recall. The manufacturer was not informed of the failure. The failure mileage was 83,830.

- Newark, OH, USA

Transmission is making rattling or ticking noise when accelerating, I'm getting hard shifting in 1st and 2nd and some random gears, I have been launched forward when coming to a stop, some hard shifting when kicking down to pass

- Bradenton , FL, USA

The contact owns a 2021 Chevrolet Silverado 1500. The contact stated that while driving on a neighborhood road, after coming to a complete stop and attempting to accelerate, the transmission started slipping. The check engine warning light was illuminated. The vehicle was restarted; however, the check engine warning light remained illuminated. The contact stated that while driving and accelerating, there was an abnormal sound coming from the rear of the vehicle. The vehicle was taken to a local dealer to be diagnosed, and the contact was informed that there was no cause for the failure found. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 24,000.

- Zion, IL, USA

The contact owns a 2021 Chevrolet Silverado 1500. The vehicle was initially taken to the local dealer to be repaired under NHTSA Campaign Number: 24V797000 (Power Train). The contact stated the vehicle was not repaired. While driving 30-35 MPH, the rear-end locked up and caused the vehicle to enter the wrong lane. The contact stated that other vehicles were able to drive around the vehicle during the failure. The engine revved, and the RPMs revved too high. The driver was able to pull over safely. The check engine, traction control, parking brake, and maintenance warning lights were illuminated. The vehicle was towed to the local dealer, where it was diagnosed, and it was determined that the rear-end had locked up, and the #5 cylinder and wiring harness needed to be replaced. The mechanic was unable to unlock the rear-end. The vehicle was not repaired. The vehicle was taken to the local dealer on six other occasions for unknown issues. The manufacturer was contacted regarding a buyback. The failure mileage was approximately 34,958.

- Savannah, TN, USA

Transmission shifts rough, shudders, has hesitation at times, makes the vehicle feel like it is missing from jerking. Have not contacted dealer. No warning lamps, messages. Occurred a week after purchasing vehicle.

- Richmond , KY, USA

I was driving in a straight line at 45mph when my truck jerked to one side. It felt like the back of the truck was sliding out from behind me and also felt like my truck was being pulled to a stop. A check engine light came on. I drove it back to my house (approximately 3 miles). The light went away but came back, and the transmission started overheating even though I was only going 10-20 mph. The truck randomly did the same jerking action while going home. I had to drive slow to get home. There was no warning when this happened. No lights, sounds, or other warnings. The jerking motion almost made me hit other cars, and almost made me lose control of the vehicle. It is available for inspection if needed. It has not been looked at yet because I found this website when researching the problem online. If you want to inspect it, then you need to inspect within 2-3 weeks because I-??m military and I am getting stationed overseas.

- Arlington , VA, USA

Transmission problems, when the truck would get to operating temperature the transmission would lurch when I would stop the truck. If I pulled up to a stop sign/light the transmission would lurch forward hard enough to make it feel like I got hit. If I didn't have my foot hard on the brake pedal it would move the truck far enough to hit another vehicle or pedestrian. After awhile the transmission started to slip out of gear as I was driving at highway speeds or not engage correctly during acceleration. I have now been without this truck for months while they try to replace the transmission.

- Roy, UT, USA

Driving Ashland pass in OR, the transmission over heated with the truck dinging for us to pull over an idle, there is no where to pull over on Ashland pass for 8 miles. After sitting in an unsafe location with the truck idling wasting fuel we where able to get back on road after 30min. Upon arrival to location we where able to see that the exhaust system sits right on the transmission pan heating it up when truck is running. This model does not have a dip stick to check transmission fluid resulting in a $2500 drop an drain to which I am told by the mechanic that this needs to be done every 40k. That is alot of cost 2x a year.

- Fernley , NV, USA

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