For anyone who is interested to know, I have successfully added a heated steering wheel without upgrading my seats just yet. I have a ‘19 Express with the basic manual seats. I wasn’t wired for anything.
I ended up getting a leather heated wheel brand new for about $260 (has blue stitching which is great since my truck is a hydro blue), used clock spring, steering wheel harness, and a used heated seat module. I then ran all the wiring required for the heated wheel and updated settings in my UAS radio. I do plan on adding heated/vented seats down the road so I did run all of the fused wiring into the truck at the same time. I do still need to run the wiring from the driver to passenger seat but after that I should be fully wired up to be able to drop in some heated vented seats whenever I get around to buying some.
PS, please ignore the surround camera setting in the UAS, I’m working on getting rid of that, it shouldn’t be there.