MadCow
Forgive me for asking but i might have missed a post, what is it you are trying to accomplish?
My writeup was about using an alternate piece for the USB ports not a factory look, if you are looking to add the USB/SD Card slots in the center console then this is a different conversation, I was talking about adding more USB ports without tearing the center console out to add the harnesses etc. for the factory look, and I'm not sure a truck without the center console USB/SD Slot from factory can be added, yes you can buy the harness and the USB/SD ports for the center console but i am not sure if the plug under the passenger seat has the proper pinout to support an addon. (Can someone weigh in here on this), if you are intent on adding the ports for the "factory" look then i would get a diagram of the pins of the plug under the seat and compare it with the plug in your truck, if they match up then great, you should be able to add this as a factory installed option, but again I'm not that versed on doing this as my truck came with the center console ports.
Also all the plugs on the harness under the center console plug directly into a large plug under the passenger seat which should be removed the get to the plug, the only plug on the harness routed to the dash is number 10, the main harness for the console goes to the seat which is number 11 in the above picture you posted
My suggestion if your going that far to add the USB/SD ports to the console and if you dont have the wireless charging i would add that in the process, or just the harness for the wireless charging, the harness i used on my truck which has the existing USB/SD ports in the console if it works the part number from the wireless charging thread for the console harness is 84482759
I would read the thread about wireless charging which might shed a little more light on the subject about what your trying to do. Keep in mind there is harness number 10 as i talked about before in your photo that supplies the USB port to the main harness in the console for the USB/SD ports in the console, so there are essentially 2 harnesses, the main one for the console which has the plugs for the USB/SD. rear seat heaters (don't worry if you don't have them just get the harness it will be fine unplugged if you don't have the seats) and the wireless charging plug for the other equipment, again the wireless charging plug can also stay unplugged if you don't wish to add this option
https://www.gm-trucks.com/forums/topic/240951-adding-oem-wireless-charging-pad-to-a-2019-2020-silverado/#comment-2435909
Going back to what i was talking about, i did test a standard USB hub plugged into the port on the dash and the hub worked as designed, simple solution but not a factory looking one, just an alternative.
Also, i would need to see a parts list of the diagram to determine what you would need, and again I'm going back to this, I'm not even sure if it would work, look at wiring diagrams and pinouts for the harness under the seat and if you have the plug coming from the dash with a USB Mini male plug on the end of it
I am all about making things look stock if possible do your homework on this before blindly ordering parts and your best bet is to pull a couple panels off to get a few photos of the pinouts and if the center console has the USB mini plug from the dash
Chris