2021 transmission 1-2 shift

[ang2bmd]

21 z71....I don't notice at all....

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[RugbyRef]

Likewise...I haven't noticed it in our '21 Yukon, but we have minimal miles on it. I had to get a "triple flush" on my 8-speed '19 Corvette GS because of the issues mentioned in earlier posts. Good luck OP!

 

[sabasigh]

My 2020 Yukon 10 speed has a few brutal shifts in cold weather...just leaving my subdivision. Eventually smooths out.

 

[Jsenky]

I've noticed it too. Usually only when I'm gently accelerating. It hasn't bothered me enough to post about it, but it is noticeable. If I'm driving more aggressively, it doesn't seem to happen.

Edit: I've only noticed it in my AT4. I haven't felt it at all in the Escalade.

this is exactly how I would describe how my at4 shifts from 1-2

Have it in my at4 too. Had a similar issue in my 2016 tahoe but it was way worse with the ‘16. It has only happened maybe 4-5x in 5k miles.
Definitely happens more when the transmission is cold now that i think about it.