See attached document for complaint.

- Hinesville, GA, USA

On 12-26-24 the transmission on my vehicle failed suddenly going down the highway. Driving down the road a jerking motion and then all of a sudden the vehicle would not shift gears. Luckily the road wasn-??t crowed because all of a sudden the vehicle slowed and would not accelerate. If someone had been following me there was no break light indicating I was slowing down. When I returned home I discovered I didn-??t have reverse either. If I was in a place I needed to back up I couldn-??t have. I took the vehicle into the dealer the same day and they diagnosed the problem was in the transmission. They ordered the part but it isn-??t available and don-??t know when it would be available. This leads me to think there must be many other transmissions with the same problem as mine. In my case there was no accident but if it had been on a congested highway there could have been.

- Fayetteville, AR, USA

On December 13th 2024, I was unable to drive my truck in reverse. I put the truck in neutral and pushed it out of its parking spot. I was able to drive the truck to the GMC dealership for diagnosis. On December 19th, I received a call from the dealership and I was told the transmission valve body was bad. I called on January 2nd 2025 for an update on the repair and was told the valve body was on backorder and they had no ETA on the Part.

- Kingwood , WV, USA

Failed transmission; needs valve body replacement but part is on national back order. Vehicle has been at dealership since 11/12/24. Almost 2 months and no eta when part will be in. Dealership did offer loaner after first 3 weeks. Vehicle is available for inspection, no safety issues as the problem occurred in driveway at home. If the problem had happened on the highway though, there would definitely have been some safety concerns. No prior warnings or symptoms. The problem has been confirmed by the dealer and was approved as warranty work. A recall should be issued.

- Shattuck, OK, USA

The contact owns a 2024 GMC Sierra 1500. The contact stated while driving at an undisclosed speed, the transmission shuddered. The contact stated that the shuddering was severe, causing the transmission to seize. The vehicle was taken to the dealer where the failure was identified, and the contact was informed that the transmission fluid needed to be flushed and refilled. The transmission fluid was flushed and refilled; however, the failure reoccurred. The vehicle was taken back to the dealer; however, the failure was not duplicated. The vehicle was not diagnosed or repaired by an independent mechanic or the dealer. Additionally, the contact stated that the vehicle remained at the dealer for three weeks and a loaner vehicle was provided; however, the vehicle experienced the same failure. The manufacturer was made aware of the failure and a case was filed. The failure mileage was approximately 4.

- South Charleston, OH, USA

Called multiple dealerships and found out there is a known problem with the valve body for the transmission in these vehicles, which mine is currently being towed today to the dealer. This is what happened to me today, I was driving with my two children on the interstate and all of a sudden I had no drive nothing so the speed reduced quickly. Well behind me there was a 18 wheeler on my back and almost ran into me because I had no more drive on my pickup. Then when it was safe to pull to the side of the road found out there is no reverse either. Making it even more unsafe to drive these vehicles. If I need my reverse to back my vehicle out of on coming traffic-??s I would not be able to do so. But this is the big kicker, this valve body for these vehicles are not being produced by gm. The multiple dealer ships that I called have said all the same thing, this is an extreme safety issue that should be recalled.

- Fort Kent, ME, USA