I have seen some other posts but not sure if there has been a resolution on this topic. I have a 2024 Chevy silverado 2500HD duramax. At about 12k miles my truck started having a hard time shifting at around 45 mph during light acceleration. It loses power and shudders while trying to shift into the next gear (typically a violent jerk). Sometimes it does it 3 times in a row before actually shifting. I took it to the original dealer the first time and they said it was a software update but when I got it back, it still occurred. I took it a month later to a closer GMC dealership and they said they couldn't recreate the situation but ironically, it did it as soon as I left the dealership. I took it back to the original dealership a month after that and they said it had low transmission fluid from the factory and they filled it up and it was good. That helped for a few days but after that it started doing it again. It doesn't always do it but it does it enough to be bothersome. Has anyone else experienced this and if so, did was anyone able to fix it? I called GM customer service and they advised me to take it back in. I am so sick of having to take it in (it'll be #4 and I am pretty sure they won't fix it). Any feedback on this would be greatly appreciated.
