GMC Sierra 3500 transmission failure problems

Filed Jul 15, 2026 · Acceleration, Transmission · TX · crash

May 3 2026 was traveling on highway when my 2023 dually duramax wheels locked up on me causing me to hit a guard rail and then truck would not go into any gear and was toast after first dealership it went to was valve body repair and after 1400 dollars it went to another dealer on June 17th to Frank brown for transmission replacement due to failed valve body issue similar to special bulletin n242454441 GMC executive office promised to replace and take Care of me since I am a “valuable customer and instead they lied and went back on their word and left me with another bill of 9,300 dollars for repairs 6200 for transmission and 3000 dollars for labor???? I am feeling like I’m being taken advantage of and need help I’ve lost my job since this has happened and struggling to pay for the truck it’s self but I am maintaining and when they are hoping I get it repossessed so they can get away with not having to deal with my case I’ve gotten under delivered promised and they haven’t helped me at all for something. They are avoiding to admit is an issue when the truck was manufactured and put into sale 10/2022 as for the recalled vehicles from 2019 and 2022 and I continue to tell them this truck was manufactured 2022 they are trying to get away with technical wording when this truck has an safety issue for sure as a consumer and hard working American I need help

Filed May 15, 2026 · Engine, Transmission · TX · crash

While out of Town driving back home Wheel lock up on my 3500hd dually 2023 gmc .. vehicle had shudder effect and from 75 to 25 mph drasticly and engine reduced power light came on and wouldn’t come out of drive and then after stopping vehicle To cement parking safety block the vehicle had multiple codes for valve body and transmission failure relating to the na242454441 issue on previous year models and gmc is not working properly on a resolution but admitting that it is having the exact issue of previous models and with this issue I was promised for full replacement at no cost I am currently working with executive team to help fix the issue that the dealership in Levelland Texas is not honest about what codes are within parameters when infact have A dtc code reader and was able to get a photo and have history of code showing etc

Filed Sep 5, 2025 · Transmission · FL

While driving on the interstate we were exiting to pull into a rest area while slowing down the rear wheels momentarily locked up and the truck downshifted hard and abruptly with that happening the check engine light came on along with a decreased power message. We pulled into a parking spot during so we tried to shift into reverse and it didn’t want to shift into reverse, we tried this for a while. We finally got it into reverse and we were able to back out of the parking spot. When we tried shifting to drive we encountered the same issue. The vehicle did not want to go into drive. Once finally into drive it did not want to shift into any higher gears. It was essentially stuck in one of the gears. We made it to a GMC dealer on the next exit -we drove on the side of the interstate to get there- when we arrived we had them run the codes and they told us it was a transmission control valve which GMC has had a major recall on. While we had this “fixed” at a different dealership previously in march of 2025 it only entailed “updating the software” involving the transmission control valve. We had to leave the truck at the GMC dealer that we were able to ‘limp’ to in Crestview FL. We’ve been told our truck now needs an entirely new transmission that is going to cost $7,000. We had a similar issue right after the “software update for the transmission control valve” on march 20, 2025. The software was updated roughly a week before that incident which seemed to have cleared itself because it was momentarily and never happened again until now. Our safety was at risk because we had to drive on the side of the interstate to get to a shop because we were out of town and a tow truck was going to cost between 600-1000 dollars to get home.

Filed Jul 31, 2025 · Transmission · AZ

I'm reaching out for urgent help regarding my 2024 GMC AT4, which is currently at Newby Buick GMC in St. George, Utah, with a transmission failure that occurred on Saturday, [XXX]. While returning from a horse show in Ogden, Utah, the truck began to experience severe transmission issues near Santaquin, Utah, around 5:30 p.m. Just before reaching Santaquin, the truck jerked violently three times-so hard that I immediately checked the camera system inside my horse trailer to make sure one of my horses hadn't gone down. That's how intense the jolt was. I pulled into a gas station in Santaquin and called the dealership right away. At the time, I had three horses on board, it was nearly 100 degrees, and I was hauling a large living quarters horse trailer. The service manager was initially unavailable, but he returned my call shortly and advised me to continue driving to St. George at a steady speed if the truck could manage it. He also warned that it might go into limp mode, and in that case, I'd just be traveling very slowly. My husband was on standby in case he needed to meet me halfway, but I was hopeful that I could make it to at least Hurricane, Utah. I was able to access my GMC app on my phone at the time and confirmed to him that the transmission check light was on, and I was receiving a warning notification on the app indicating there was a transmission issue. I was able to limp the truck as far as Hurricane, where my husband met me. We unloaded the horses into stalls and took both trucks into St. George that night to drop the AT4 off at the dealership. On Monday morning, I contacted the dealership for an update and was informed that the issue was likely related to the transmission valve, and that the required part is on national back order-with an estimated delay of two months or more, but no confirmed ETA. This has been my first GMC diesel. I've always driven Dodge trucks. Over a year ago, I saw the new color GMC released and kept telling my husband how amazi INFORMATION REDACTED PURSUANT TO THE FREEDOM O

Filed May 7, 2025 · Transmission · 117,000 miles · NV

The contact owns a 2022 GMC Sierra 3500. The contact stated that while driving at unknown speeds, the transmission downshifted hard. The contact stated that the transmission failed to properly shift gear. There were no warning lights illuminated. The contact stated that the failure was related to the federal safety agency Campaign Number: 24V797000 (Power Train); however, the VIN was not included. The vehicle was taken to the local dealer who was unable to determine the cause of the failure. The vehicle was not diagnosed or repaired. The manufacturer was contacted and opened a case. The failure mileage was approximately 117,000.

Filed Apr 25, 2025 · Transmission · 33,800 miles · FL

The contact owns a 2023 GMC Sierra 3500. The contact stated that while hauling a trailer and driving approximately 40 MPH, the contact attempted to merge into traffic and the message "Restricted Power Mode" was displayed. During the failure the transmission failed to properly shift into a higher gear, and the vehicle failed to exceed 67 MPH. The contact stated that later while driving at an undisclosed speed, the check engine warning light illuminated. The vehicle was towed to the local dealer who diagnosed that the transmission valve body was faulty and needed to be replaced. The vehicle was not yet repaired. The manufacturer was notified of the failure. The failure mileage was 33,800.

Filed Apr 21, 2025 · Transmission · MS

Previous years of my truck with the Allison “branded” transmission have been reported to lock up while driving. From what I can gather there was a recall. Instead of fixing the issues with the transmission a program was installed to put the transmission in limp mode during the failure. My model, a 2023 apparently came with the limp mode feature already installed. When my transmission failed it took the truck out of gear and locked up for a moment before I could safely pull over.

Filed Feb 13, 2025 · Transmission · MN

The transmission failed which stemmed from the faulty (recently recalled valve body). General Motors has been contacted and there is no transmission in sight and is not able to provide an ETA. They are also not willing to cover the catastrophic failure because I am outside of my warranty terms. The dealership has inspected and concluded a whole new transmission is recommended. The vehicle has been in their possible for nearly one (1) month.

Filed Jan 18, 2025 · Transmission · NC

Transmission had to be replaced from the dealership. Hard shifting dealership said truck was 23 days out of warranty. I couldn’t get into the dealership that truck was purchased from for 3 weeks. Had to go to the Jeff Gordon dealership, which is Chevrolet. And I had to replace the transmission.

Filed Nov 18, 2024 · Transmission · OR

I have a complaint about the recall response from both nasal and gm. I feel the cure is substandard. Why not just put new transmission control modules in to correct this problem. Very disappointed