2024 Chevrolet Silverado 2500: complete transmission failure

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 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 Apr 1, 2025 · Transmission · VT

I purchased a 2024 Chevrolet 2500 HD Crew Cab High Country and reported harsh shifting after 3 months 3,000 miles and told that nothing was wrong. Brought truck back in in February 2025 with 12,000 miles due to erratic shifting and loud whining noise. After 4 days in the shop they agreed that there was a problem but didn't know what the problem was. One week ago on Sunday 3/23/25 While driving the engine would rev up for acceleration but didn't speed up. Got to my son's house two miles away. I went leave 20 min. later and the transmission died completely. It would not go forward or reverse.

Filed Jan 8, 2025 · Transmission · AL

This vehicle has a severe transmission shift issue that will likely cause an accident at some point. This vehicle has an Allison 10 speed transmission and began shifting extremely hard or violently from 7th to 8th gear in November of 2023. This problem began when pulling a travel trailer that is weight rated well below the capacity of this truck. This hard shift causes vehicle occupants to lunge during the event and it is feared that a catastrophic failure will occur, resulting in a vehicle accident. The vehicle was taken to the dealership where purchased as it is still under manufacturer’s warranty, and in March of 2024 the dealership performed a software update and transmission “re-learn” which solved the issue until the truck was used to pull a travel trailer again. The issue returned in November of 2024. The truck was returned to the dealership for follow up but the dealership has not taken any further action to resolve the problem at this time. There is a service bulletin (N242467600) issued from GM that seems related to this vehicle but I’ve received no notification that this vehicle is eligible for transmission replacement under this service bulletin. This issue will likely result in a personal injury or vehicle accident at some point.

Filed Oct 16, 2024 · Transmission · NY

Transmission failure on interstate i90, truck down shifted violently and check engine light came on and warning on dash read speed reduced drive with caution. Took truck to gm dealer on August 1 2024 who said the transmission shift solenoid plate has to be replaced. Gm dealer still has my truck as of October 16 2024 and all I they can tell me is that the part is on back order and they have no idea when it will be available. This could have caused a serious accident as I was also towing a 3500 lb trailer at 65mpg at the time with the speed being reduced so quickly by the failure.