Automatic Transmission Control Module Problems of Chevrolet Silverado 1500

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.

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I am experiencing the exact details of n192272400 rear wheels lock at low speed but for some reason my VIN isn’t associated with the recall! this is highly dangerous. It could cause a serious accident seen that I live on a main road. I don’t know where the vehicle locks up the rear brakes if I go over 5 miles an hour at random times. I believe 100% that it is exactly what is described in that recall which is a defective tcm that has a short circuit. Another issue that I have with his truck out of nowhere is a short circuit in my rear defroster that was sparking and smoking when I used it.

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The contact owns a 2021 Chevrolet Silverado 1500. The contact stated while driving from a complete stop, the transmission was slipping between third and fourth gears. The contact stated that the failure recurred while driving between the sixth and seventh gears. There was no warning light illuminated. The vehicle was taken to the dealer, where it was diagnosed that the transmission had failed due to the tcm and torque converter failure; however, the parts were not available to repair the vehicle. The vehicle was not repaired. The manufacturer was notified of the failure and a case was filed. The failure mileage was approximately 95,000.

8l90 transmission failed. The transmission was inspected by a Chevrolet technician at a Chevrolet dealership and found to be defective, thus rendering the vehicle not drivable. There was an engine light that indicated a tcm problem. The vehicle is currently in the mechanic shop at the Chevrolet dealership awaiting a new transmission.

With only 70,000 miles on the truck it started to have a hard shudder and wheels locking up. During the wheel shudder it would shift hard as well. We took it to a shop and they said it was our transmission control module and that the transmission had metal shavings and would fail soon. They also said doing any service to these transmissions can cause failure. We were informed that the dealership is aware these transmissions are all failing. The cost to replace is over $6,500. The dealership should have to do an official recall for this. After some research I found that the dealership has acknowledged the issue by replacing the tcm and uploading new software to put the transmission into a fail safe instead of putting in a new transmission. The issues that the failure causes has made thousands of people have to get new transmissions before the service is even due. A quick search on google states that 461,000 vehicles were effected and that a recall has been issued, but it has not been officially issued. We need a new transmission and should not have to pay for it on a truck that is so new and serviced timely.

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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).

The contact's husband owns a 2023 Chevrolet Silverado 1500. The contact stated that on several occasions while driving at approximately 60 mph, and shifting gear, the vehicle lost motive power for 15-20 seconds. The forward collision avoidance warning light was illuminated. On another occasion, while her husband was driving at an undisclosed speed, the driver assist function was activated, and an error message was displayed, and the vehicle failed to operate as intended. The vehicle was taken to a dealer and the contact was informed that the transmission fluid needed to be flushed, and the tcm module needed to be updated. The vehicle was repaired, but the failure persisted. The manufacturer was notified of the failure. The failure mileage was 42,000.

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The tcm failed in rush hour traffic! in minneapolis minnesota, the stability control light came on, traction control light came on, no throttle, no power. We backed up traffic, got push to the side of the road, towed to the service shop, and was told the transmission control module (tcm) failed. Then told they are on national backorder from gm. The truck has been down for 3 months with no answers or parts in sight.

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The contact owns a 2019 Chevrolet Silverado 1500. The contact stated while driving at various speeds and accelerating from being idle, the vehicle aggressively started jerking and the vehicle lost motive power. The contact coasted to a safe place and waited before attempting to restart the vehicle to continue driving. The vehicle occasionally restarted immediately, and other times took a long time before restarting. The contact also experienced unintended acceleration. The vehicle was shifted into neutral to decelerate. The contact stated that the failures occurred without warning. The vehicle was taken to the dealer who diagnosed that the transmission and lifters had failed. The six lifters were replaced; however, the failure persisted. The lifters were replaced a second time, but the failure recurred. The vehicle was returned to the dealer, who then diagnosed that the radiator fluid was leaking into the engine. The engine was replaced. The failure persisted, and the tcm was replaced; however, the failure persisted. The wiring harness was replaced for the second time. The failure persisted, and the vehicle was returned to the dealer; however, the vehicle was not diagnosed or repaired. The manufacturer was informed of the failure, and a case was opened. The failure mileage was 10,000.

The contact owns a 2019 Chevrolet Silverado 1500. The contact stated that while driving at various speeds, while accelerating from a stationary position, the vehicle shuddered while accelerating. Additionally, while decelerating, the vehicle erroneously lurched forward. The vehicle was taken to the local dealer who reprogrammed the tcm, and changed the oil which temporarily corrected the failure; however, the failure reoccurred. The cause of the failure was not yet determined. The manufacturer was notified of the failure, but no assistance was offered. The failure mileage was 41,000.

The contact owns a 2023 Chevrolet Silverado 1500. The contact stated that while driving at various speeds, the vehicle hesitated and was jerking when shifting between the first and second gear. No warning lights were illuminated. The vehicle was taken to a local dealer, where it was diagnosed that the transmission control module (tcm) needed to be reset. The vehicle was repaired; however, the contact stated that the failure reoccurred while driving into his driveway, with the vehicle lunging forward. The vehicle was then taken to murdock Chevrolet (2375 s 625 w, woods cross, ut 84010), where the failure could not be duplicated. The vehicle was not repaired and had remained at the local dealer. The manufacturer was made aware of the failure. The approximate failure mileage was 1,000. The VIN was not available.

General motors USA produced several years of vehicles with a faulty transmission control module (tcm). From 2008-25 Chevrolet and GMC trucks with the 6. 6l duramax engine and allison 1000 transmission all used the same tcm; part 24256861. This part has experienced a very high failure rate. Gm has put out service bulletins acknowledging this issue and has not made a recall. Safety concerns with the tcm are related to overheating. I have a 2010 chev duramax 2500 with that tcm; on July 16, 2022 my truck was taken in for repairs due to the failure of the tcm. For 14 months the truck has been down due to no new parts available from gm and no parts being manufactured in 2022. This has been a substantial impact to me as a consumer. There is a need for new improved parts for this long-standing faulty tcm issue. The lack of recall on this tcm is subjecting consumers to risks of overheating the transmission system as well as incalculable down-time impacts related to personal and business owned trucks. This problem of the faulty tcm on my truck was confirmed by the local auto repair shop I use as well as the local Chevrolet dealership in delta, CO. The tcm, will long known problems acknowledged by gm, needs to be on a recall for consumer protection.

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While driving the vehicle wont shift properly. As someone with a degree in automotive I checked the vehicle which has code p0741 in the tcm. I contacted gm regarding the problems with my vehicle and they agreed to pay a portion of the costs to repair if I had it diagnosed by a dealership. The dealer diagnosed it between them and gm they replaced the valve body. This did not fix the issue. The dealer found metal shavings in the transmission which it not a good thing. This transmission needs to be replaced. However, getting the dealer or gm to say or do this is not working. I am stuck with a vehicle that isn't functioning properly. I have talked with other dealerships and transmission repair shops which all agree that if metal was found the then the transmission needs replaced.

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The 2014 and up Chevrolet Silverado 1500 models are notorious for electrical issues and bugs, some may have been recalled but other were not included in that recall while still having the same issues, these vehicles have major electrical system issues, from bad battery cables, down to every control module associated with the truck, over time salt, sand, mud, moisture disrupts certain key areas of the electrical wiring harness underneath the vehicle, general motors knows about this but fails to recall these vehicles, it creates a very serious matter when you have no traction control, or any abs function, along with loss of power steering assist. These control systems can be life and death when they are not working!. Gm needs to address these issues and recall all 2014+ silverado’s and alike for these electrical issues relating to “loss of communication with the ecm, bcm, tcm, ebcm, tccm, pscm, etc. These are costly break downs and these modules are very expensive to just throw in and hope it fixes the issue, most dealers don’t want to trace wiring issues and will just tell the customer cannot replicate which leaves us vulnerable. Some customers state their vehicles will randomly shut off while driving, others report their truck going into “limp home mode”. Nobody can seem to centralize a specific area where the problems are occurring but believe it has something to do with the material and the way the harness was made.

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Truck has excessive shuddering accelerating or decelerating. According to the service person at the dealer it is a problem with moisture and the factory fluid that the truck came with. Diagnostics showed excessive tcc slippage which requires and upgraded transmission fluid. The tcm was also reprogrammed with the latest calibrations. Total cost $654. 30.

Tl-the contact owns a 2017 Chevrolet silverado ld crew. The contact stated that he left his headlight on all night causing the batterie died. The contact managed to start the vehicle as the ecm, pcm, power steering assist reduced warning light illuminated. The vehicle has not been seen or diagnosed. A dealer hoblit Dodge Chrysler Jeep ram 333 main street, woodland, CA 95695 was contacted and informed the contact that no recall was under the VIN. The failure recurred. The batters was replaced. The contact mentioned NHTSA campaign number: 18v586000 steering as a possible solution to the failure however the VIN was not included in the recall. The manufacturer was contacted and made aware of the failure informed the contact to contact NHTSA to place a complaint. The failure mileage was approximately 48,400. Ck.

The power train delays shifting from 1st to 2nd gear resulting in hesitation in forward movement or a very hard, abrupt lurching forward shift. This happen on the first drive of the day and then intermittently throughout the day. Both types of shifts create unsafe conditions. It seems the engine power is linked to the the shifting issue and either not enough or too much power is applied at the shift point. In one instance the power train was confused and could not decide whether to be in 1st, 2nd or 3rd gear and shifted up and down while I was attempting to navigate congested city traffic at slow speed. Gm service bulletin 20-na-102 and 16-na-361 suggest that the power train behavior is normal. When I returned the vehicle for service, this was the diagnosis. Discussion with the service advisor indicated that in some instances other actions are taken to address the situation, but it is never eliminated. Now customer satisfaction program n192272400 has been issued due to a faulty tcm which causes the wheels to lock up. This should be an urgent recall. These combined conditions create an unsafe vehicle that needs to be addressed and corrected.

Tl the contact owns a 2014 Chevrolet Silverado 1500. The contact stated that the vehicle seized in 4-wheel high. On several occasions, the service 4x4 or service stabilitrac warning indicators illuminated. The vehicle was taken to bidelman Chevrolet Buick GMC (located at 4048 oak orchard rd, albion, NY 14411, (585) 331-8162) where it was diagnosed that the tcm module needed to have a software update performed. The contact was informed not to shut off the vehicle in the 4-wheel drive position. The vehicle was not repaired. The manufacturer was contacted. The approximate failure mileage was 30,000.

Tl the contact owns a 2017 Chevrolet Silverado 1500. While driving 25 mph, the vehicle shifted hard from first to second gear. The failure occurred everyday since the vehicle was purchased in April of 2017. The vehicle was taken to o'reilly Chevrolet (6160 e broadway blvd, tucson, az 85711) where it was diagnosed that the transmission control module failed. The dealer reprogrammed the transmission, which failed to remedy the failure. The vehicle was brought back to the dealer and the valve body for the transmission was replaced and the transmission fluid was changed. The failure recurred. The manufacturer was notified of the failures. The failure mileage was 16,000.

Driving through the parking lot when I noticed a loss of power. I looked down at the dashboard and saw the check engine light was on. After calling the dealer, I attempted to drive back home. The truck wouldn't go past second gear. I even tried putting it on manual and shifting myself. Even though the lever was on m, the m itself did not light up and the + - buttons did not work. Thankfully I made it home with the hazards on. This is the second time dealing with this issue. The dealer said it was the transmission control module the first time. Now they are saying it's the speed sensors.

Truck died. Lost dashboard functions, no engine crank, pcm failure. Had to have towed from side of expressway to dealership for diagnostic testing. Found out pcm was bad ,and had to replaced. Rarity, but coincidental when it happened just 217 miles over the 80,000 mile gm warranty time frame. It was almost a $800 bill that I had to fork out since there was no more warranty.

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