Chevrolet Silverado 2500 transmission failure problems

Filed Sep 21, 2026 · Transmission · MI

While driving on the highway our transmission cooling line completely separated at rubber hose to metal line crimp. This cause transmission fluid to burst out all over the vehicle including the windshield and trailer. Vehicle immediately stopped pulling and we barely were able to get to the side of the road. This also caused a catastrophic transmission failure costing approximately $10,000 to repair. GM covered some of the transmission cost but still left us with $5000 bill for a transmission line defect on a vehicle under 100,000 miles. This created a unsafe condition with the trans fluid on the windshield and immediate loss of drive. All maintenance was performed per manufacturers specifications and no warning signs/lights/leaks provided prior to the failure. I do have pictures of the failed transmission cooling line.

Filed Jul 27, 2026 · Transmission · 105,000 miles · AR

The contact owns a 2023 Chevrolet Silverado 2500. The contact stated that while driving at various speeds, the transmission was slipping. No warning light was 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 repaired; however, the failure recurred days later. The vehicle was taken back to the dealer, where it was lifted and inspected, and the contact was informed that no failure was found. The contact stated that the failure persisted. The vehicle was not repaired. The manufacturer was contacted and referred the contact to the federal safety agency Hotline for assistance. The failure mileage was approximately 105,000.

Filed Mar 24, 2026 · Transmission · IN

While driving in heavy interstate traffic on March 18, 2026, the vehicle suddenly downshifted hard to 2nd gear, locking the rear wheels and causing the vehicle to slide out of my lane. The truck then entered limp mode and appeared to be stuck in 2nd gear. I immediately called my chevy dealer to make an appointment to drop the truck off. While researching, I found there was a recall for the same vehicle symptoms, but my truck falls outside of the recall. The truck is currently at the dealership for a valve body replacement, due to a KNOWN issue with the Allision transmission where TSB's have been issued. Chevrolet should be more proactive and recall the trucks, and replace the transmissions instead of a bandaid fix, before someone with less driving awareness/experience is involved in an accident

Filed Feb 11, 2026 · Transmission · WV

The vehicle experienced a sudden and complete transmission failure at approximately 77,800 miles. There was no prior abuse or modification. The failure resulted in loss of normal drivability and required full transmission replacement. The transmission was replaced with a remanufactured unit due to catastrophic internal failure. Repair costs were approximately $7,000. I am aware of similar GM transmission issues and recalls affecting comparable model years and components. Although my VIN is not currently listed under a recall, the failure appears consistent with known GM transmission defect patterns. The failure occurred while the vehicle was in the middle of an intersection in heavy traffic, resulting in sudden loss of vehicle functionality. A child passenger was onboard at the time. The incident created a significant safety hazard due to loss of drivability in an active traffic environment.

Filed Jan 26, 2026 · Transmission · 109,000 miles · LA

The contact owns a 2015 Chevrolet Silverado 2500. The contact stated that while driving approximately 50 MPH, the vehicle started to vibrate and shudder abnormally. There was no warning illuminated. The contact continued driving at approximately 30 MPH. The contact had not taken the vehicle to a local dealer or independent mechanic. The vehicle was not diagnosed or repaired. The contact had another 2015 Chevrolet Silverado 2500 in 2025, and the vehicle experienced similar symptoms before the transmission failed. The contact stated that the vehicle was towed to a dealer, who advised that this was a known failure with the 6-speed transmission. The contact was informed by the dealer that the torque converters were too small for the transmission. The manufacturer was not informed of the failure. The failure mileage was approximately 109,000.

Filed Jan 12, 2026 · Transmission · MT

While driving, the 10l1000 transmission in the truck attempted to shift from 6th gear to 7th gear. The transmission locked up causing a violent "buck" from the rear end of the truck. The road was icy and could have caused the truck to lose control due to the lock up of the rear wheels. After getting the truck to a repair shop, valve body was deemed the cause of the failure. A complete transmission replacement is needed. Had I lost control of the vehicle due to the lock up, my family and other motorists would have been put at risk of severe injury or worse. No warning lights were illuminated prior to failure.

Filed Dec 8, 2025 · Transmission · OR

I purchased my 2025 Chevrolet Silverado 2500HD new from Wilsonville Chevrolet in Oregon. Since owning the vehicle, I have experienced a noticeable shutter/vibration at highway speeds, consistently between 70–75 mph, whether towing or not. The shutter feels like it is coming from the transmission or driveline, and it occurs on multiple road types and conditions. I reported this issue to Wilsonville Chevrolet, but they told me they “could not duplicate” the problem and offered no repair. I then took the truck to Power Chevrolet in Corvallis, who stated the tires were out of balance and replaced them. This did not resolve the issue, and the shutter at highway speed remains exactly the same. I also contacted GM directly, but was redirected back to the dealership, resulting in no progress. At this point the issue has been reported multiple times, yet no root cause or repair has been provided. I am essentially being sent in circles without a solution. There appears to be a growing history of transmission-related issues with newer Chevrolet HD trucks equipped with the Allison 10-speed transmission, and this symptom seems consistent with those reports. A shutter at sustained highway speeds raises a significant safety concern, as a transmission failure at 70+ mph could lead to loss of control or power. In addition to the shutter, I have repeatedly noticed a strong “burning brake pad” smell coming from the rear of the truck. This happens randomly and has also been reported to the dealership, but no cause has been identified. I am unsure whether this is related to the transmission issue, but combined, these symptoms suggest a potential mechanical defect. Given the safety implications and the lack of resolution from authorized dealerships, I am requesting the federal safety agency’s assistance in investigating this issue.

Filed Aug 8, 2025 · Transmission · IL

GM has acknowledged the problem and has issued a recall on transmissions effecting 2020 – 2022 Chevrolet Silverado 2500/3500 Heavy Duty trucks equipped with diesel engines manufactured between January 28, 2019 – January 11, 2022. Our truck, a 2021 Chevrolet Silverado 2500HD, was taken in to D’arcy Chevrolet in Morris, IL to have Recall N242454440 – Momentary rear wheel lock-up – Transmission and Engine Control Module Programming with SP. Under this recall dealers will install new transmission control module software, free of charge. GM will provide a special coverage program to cover the repair of transmissions that are identified by the remedy software as containing a defective control valve. After the recall service was performed we were told by the dealership that the transmission needed to be replaced. It clearly states under the recall performed that GM is to provide special coverage to cover repairs that are identified by the remedy software as containing a defective control valve. Also, by law, dealers are never to charge for recall repairs. But GM and the D’Arcy Chevrolet are refusing to cover the repair costs for the transmission under special coverage program.

Filed May 29, 2025 · Engine, Transmission · MA

My business work truck started not shifting properly. I dropped it off at Mirak Chevrolet in Arlington, MA on 4/29/25 and they diagnosed the vehicle needing a valve body part # 24065357. GM/Chevrolet has been unable to source this part and was unable to provide an eta. I immediately contacted GM and my case # is [XXX]. Then it was approved and escalated for a new transmission and same issue unable to source part and no eta. This is my business vehicle that has not been operable since [XXX] due to a manufacturer issue. No fault on my end. This is a brand new vehicle that should not have these type of issues. I have lost revenue, income, jobs, and I don't have a replacement vehicle. I have a loan on this vehicle that I am making payments towards but there is no end in sight. It has been a month with daily calls to GM for an update or for someone to call me back and nothing. I need my work truck back. This has caused extreme financial stress. I need help. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed May 6, 2025 · Transmission · AK

70,000 mile complete transmission failure despite being serviced on-time, as per the guidance. Failure happened while driving and it became dangerous to try to maintain highway speed. Quoted $8390 to replace by the local Chevy dealership and quoted 4-6 weeks delivery for backordered parts. This is an unacceptable situation that GM and other manufacturers have artificially manufactured. They design everything to the bare minimum to save fractions of a cent per part, and then they intentionally make the parts unavailable and then the dealership pushes you to trade the broken vehicle in at a massive loss just so you can get back on the road in a newer, more expensive vehicle. This sort of behavior is causing immense financial harm to American families.