Cold start rough shift into Drive

[3ha26lff]

2020 Silverado 4.3 6L80e 33k miles

 

Anyone have any experience with cold start rough shift from park to reverse and again into drive? 

 

I've noticed it for about 15k miles over the last 1.5 years.  Have not taken it to a dealer because i think that is a waste of time and expect them to say they cant reproduce and/or its normal.    I've done a lot of observation over the time and initially I thought it was correlated to high idle RPM as very often after remote start and idle for 3-5 minutes , the RPMs will be 600-700 still when I expect it to be 500.  I've done trans pan drop and refill 2x a year since 2023 and while that resolved weird shifts when driving, it hasn't impacted the cold start rough shift to reverse/drive.  Most recently I've seen people suggest it is a faulty MAF sensor?   I do know if i let it warm up 5-10 minutes it shifts smoothly into Reverse and Drive.  When I drive into work, it will not have a hard shift (after several hours sitting) when I leave.

 

I know I've seen other instances here, just curious if anything conclusive has been discovered.