Why would you need the flush? I thought the 2020 and beyond come with the right trans fluid from the factory. I am confused...The advisor told me to drive itv250 miles and it should go away. If it doesn't I guess the next step is a new TC. I will take it back Monday if its still shuddering.
I hate to say it, but there are a few reports of 20s having shudders. You can't trust what anyone from GM says about the use of new fluid. I would make a flush, and one you can witness, a condition of the sales close. Be TOUGH! They aren't married to these cars and they would rather have the sale. If you search the recent thread you will see the complaints. Print them out and present them to the sales creature. If he says this doesn't mean $hit, the ask if his dealer's google reviews mean $hit?This is my concern. I'm very close to making a deal on a 2021, but if I get the shudder will ym treat me right?
Oh, I agree. I love the truck but its just a bummer that its still on a problem on the 2020s. I did the research before I bought it earlier this year - hoping that it was addressed.My '18 started doing it this year. Got the TSB flush performed. Good as new again. I wouldn't call this a reason to avoid the truck, just something to pay attention to.
If you look around, there's reports of shudders in other new automatic transmissions, not just GM.
It may also be that the new fluid does not fix the issue, but rather in most cases delays the issue from surfacing till later and maybe in some cases the delay does not happen. Just a thought.These 8 speeds have been doing this since 17 when they came out. So this crap isn't sorted out yet? How can a 2020 have the wrong fluid? WTF?
Yes, that's my point, they did a flush on a 2020 to fix it. This makes zero sense. I have a funny feeling my next truck won't be made by GM.It may also be that the new fluid does not fix the issue, but rather in most cases delays the issue from surfacing till later and maybe in some cases the delay does not happen. Just a thought.
Sent from my SM-G975U using Tapatalk
Interesting how manufacturers had fairly bullet proof 5, 6, 7 speed transmissions. But 8, 9, 10 seem to have issues. 10 seems like alot of gears, but 8 seems like a sweet spot if they can get the issues worded out.Yes, that's my point, they did a flush on a 2020 to fix it. This makes zero sense. I have a funny feeling my next truck won't be made by GM.