Kam2920

So I have a 2013 Chevy 2500hd with the 6.0l, I’m looking to get my heated and cooled seats working. I have a Lt but I bought the truck with ltz seats in it. what would I have to do to get them working right now everything is plugged in on the seats would getting a new door harness and panel from a ltz with the buttons make them work? I’m stumped and am running out of ideas.