GMT900 6.2 Trucks didnt have AFM, which was nice.      

If it won't pull it, then it won't pull it.     You'd have to use one of those sites where you can buy a reprint.  

I never liked the choppiness of AFM (or DFM) in my '15 and '20 Silverados and IMO it's worth disabling just for the driving experience alone.   I wonder what the actual failure rate of AFM/DFM is.

186K miles on my 2020 8-spd.  Butter smooth shifts.

Im unable to pull up the sticker for my 21 Sierra. It worked fine for my 19 Silverado... Can someone pull the sticker for me Please? 3GTU9FET6MG179370