I can update on the heated seats at least.
Dealer I brought the truck from in April just called today and indicated the heated seats module is in. My truck does not need the buttons and faceplate. See below, too bad I just traded it in for a 2022 Denali.
I dont need the heated steering wheel as mine was in place in April when I brought it.
Dealer more local to me offered to get the parts on the retrofit, but, the heated module was missing, so they gave me the part number and I brought the module. It appears in 5 day time now, it still has not shipped from a GM warehouse like I was told it would. The dealer indicated they would take the part and install it with the other parts that did come in. Well, no need now, the truck is traded in today.
As of today, I solved the issue myself. I traded in this 2022 SLT 6.2L for a 2022 Denali 6.2L with all options ..folding running boards, wireless charging, and even SuperCruise. So many of the options missing from even the 2023 Ultimate coming builds. The only retrofit is parking assist. I could care less about it anyway, so I will not worry to have it installed even if I can in the future.
I got one of those $3000 credit from GM for the cancelation of my Ultimate order from last January, I decided that $3000 and my $3000 would put me in a fully loaded Denali and solve the issue of heated seats and SuperCruise. 54 miles so far and it is nice to have heated leather seats now.