2019-2021 Custom Steering Wheel and Custom swap

[Nickisfatt]

So i have a 2021 Silverado Custom and Ive been wanting to upgrade my clusters and Steering wheel.  I see alot of people saying it the Audio controls dont work because of the radio but from what I've seen there are LT trims that also have IOR radios(like the customs and w/t) and Steering wheel controls.  With that being said, then the wiring is possible for steering wheel audio controls to work, no? and if the clusters are swapped as well, wouldnt the steering wheel be able to connect to the new clusters?

[Shoup1cobra]

Can confirm that the steering wheel controls don't function if they were not equipped that way from the factory. The cruise functions like normal but the RH controls and the controls behind the wheel do not work. The wiring is not there to support it. At least a couple wires on the upper left of the plug are empty in the basic version. These are filled in the more optioned wheel.