2022 Colorado transmission not shifting right on 1-2 shift

[Cranky1]

Seems to only do it when cold....dealer 'adjusted' something and it worked ok for awhile. Another Colorado did the same thing. No one seems to know what's up with it. Upon take off (cold engine etc) and it goes to shift into 2nd, it acts like it goes into neutral and of course, I automatically let off (pun intended) the gas and it then goes into second. From then on, it's fine. Anyone know what's up with that?

 

[65 sporty]

8 or 10 speed? I haven't heard of too many issues with the 10 speed, but the 8 speed has had some issues. GM started using Mobil 1 LV trans fluid because of shudder issues and they have programming updates for shifting issues