2023 GMC Sierra 3500 problems

“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…”

“On Christmas Day 2025 my Tailgate flies open on its own and I see my cargo flying out and a piece of it bounced off my taillight passenger side braking the taillight and then when attempting to pull over my lane departing feature try’s to correct its self and I hit the median luckily at slower than I was going but enough to make a decent dent on front bumper”

“The brake controller on trucks error out while towing. Shuts brakes off. Not a good thing towing 16,000lbs down hill. Almost accident. Destroyed my truck brakes and warped rotors. The controller checks the house battery on trailer and if not in range shuts brakes off. The brake towing screen in truck states all is good but there is this tiny little light at gain adjust location that goes off and you do not have brakes but yet your screen states you do. Bad deal.”

“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”

“I have had an incident where my 2023 gmc 3500 hd was had left me stranded earler this week. i towed the new truck to a certified dealer and i haven't heard anything since then. they mentioned my transmission will need to be fully replaced because valve body issues of solenoid a,e,f, are stuck open and closed codes on the 10 speed transmission upon researching my trucks history it was manufactured in 2022 and pulled out for sale october 2022 and i have seen. 242454441 special recall the same issues i experienced shudder and engine power reduced and no parking gear or driving. i need help and didnt have any warning of anything about this till now since it was showing my vehicle only had a tailgate issue which gmc didnt help me out when i had to pay for my taillight after firewood flew out with the tailgate opening in jan 2023 they said it wasnt a known issue then fixed the tailgate but not the taillight so i need help proving my truck belongs with the 242454441 class of recalls because not only does the transmission the exact same as previous models obviously 1000s of others are getting this issue thank you”

“The vehicle experienced a catastrophic fuel system failure involving the high-pressure fuel pump and related fuel system components. While driving, the engine began stalling and lost power, making the vehicle unsafe to operate. The failed components were replaced during repairs; however, the repair records, photographs, and additional documentation are available for inspection upon request. The failure created a significant safety risk because the vehicle stalled unexpectedly while being driven, resulting in a sudden loss of power. This placed the occupants and surrounding motorists at risk by reducing the driver's ability to safely control the vehicle or move it out of traffic. The problem was confirmed by an independent repair facility, which documented extensive metallic contamination (metal shavings) throughout the fuel system. Photographs and videos taken during the inspections document metallic contamination within the fuel system. From our understanding, cp4 pump failure has been a common issue.”