Trans shudder still occurring on 2020's?

[Brig]

I didn't read all of the replies so someone may have already answered the question.  I was experiencing the first

to second clunk when the truck was cold and it was the first time I drove it.  What I started doing is to start the truck, put the   transmission in reverse for five to ten seconds, then put it in drive and wait five to ten seconds before driving off.  I haven't experienced the clunk since I started doing this.  I'll leave the theories to those more knowledgeable about  transmissions.

[keller]

i have 2017 colorado had shift slip between 1st and 2nd then got the shutter at 20000 miles dealer did the fluid upgrade worked to  50000 miles and came back dealer put in new torque converter now have 58000 miles so far problem is gone

[Pete43]

I have a 2020 Colorado V6 WT 4wd with 13k miles on it. The shudder has just got bad enough to take it to the dealer and see what the warranty is worth. So they didn't fix it in 2019 like everyone says with the new Mobil 1 oil. I'm betting it's because GM took the lowest bidder make the torque converters.

 

Pete

[pokismoki]

has Sonnax or trans-go put out any new hardware updates on the A8?