I have a '23 Traverse on order. I was advised when building the order that the heated seats will not work as delivered. The reason I was given by the GM Chat robot on their site is that the modules required to link through the CAN bus to the BCM are not available due to the shortage of processors. I was also advised that the seats will have the heating elements, wiring, and connectors so that when modules become available I can return to the dealership and the service department can install them and flash the BCM with any necessary software updates to make them functional.
I was told that supply shortages are also the reason the vehicle will be delivered without the compressed fiberglass hood insulator, and it will be installed in the same manner when available. The only difference is that I doubt any reprogramming will be necessary with the hood insulation blanket.
You might want to quiz your dealer sales and service people about that.