Clay Caudill

My truck started to act up again. I am starting to think I am having a bad injector. I don't get any codes though which is confusing.

So, mine is about 99 percent gone. I sent emails to GM from an email they sent me after leaving a terrible review on their website. I emailed my dealership and told them this truck was basically a paper weight. Left bad reviews. I took the general manager on a drive and showed him what it did. They kept it for about a day and realized it is something with the fuel management system. They advised me to put the truck in L9 which bypasses the fuel management. It was better. Then about a week later, an update was sent to my truck over the air and I couldn't drive for about an hour when I shut it off. Since then, it's been about 3 times. This happened in September. So after 4 months of hating this truck, I'm back to loving it like day 1. It took 4 trips to dealer and emails and reviews to get through. Along with researching bulletin 20-NA-142 from GM. That gave me more info to force the dealership to try more options. No clue if this will work for you, but good luck. I know the feeling.

Not sure if this will help anyone out with the 10 speed transmission. The shudder,surge, etc.... in my 22 at4 with the 6.2, we have went through injectors, transmission fluid, torque converter, and just about everything else with no resolution. It is a software concern for the active fuel management system (im sure there is a more technical term). If you put your vehicle in manual and shift to 9th gear and leave it, it bypasses the AFMS and the shuddering goes away. I just ledt the dealership and entire ride home was smooth as can be. Hopefully this helps out

2022 AT4 with 6.2 purchased in July. I have had it in 3 times, duplicated issues in drive the stutter and shudder under light load. Said there is nothing wrong and its normal driving conditions. If a new vehicle drives like that, it's TRASH! I have found several issues with shavings in transmission, fuel injector issues, and programming issues. Seems like they just tried to crap out all these parts to produce trucks and didnt quality test them. Im getting super annoyed. I havent had any lights come on though.