Moving/adding center stack switches '22 2500HD

[Nodakrider]

I'm working on adding factory OEM parking assist to my '22 GMC 2500HD; it wasn't ordered with it. I have all the parts except for the center stack dash parking assist switch; my current configuration is shown. I could add the park assist switch to the stack on the left 1/3 if I were to move the existing descent control switch over to the right third switch. I'd just have to order two new switches: 86827766 (bed outlet & descent control) & 86827777 (blank & park assist).

 

Of all the possible stack switch feature options, the descent control is the only option that can be located in either the left or right 1/3 switches; all the other options (except the center switch options) are confined to either a left or right location. The park assist option must be located in the left 1/3 switch location. GM doesn't make a stack switch that includes the park assist and descent control in the same 1/3 switch configuration for the 2500HD.

 

I'm wondering if I install the new 7766 switch that moves descent control to the right side 1/3 switch, would the truck logic detect the new location, or if I'm looking at some reprogramming? It appears they use the same harness plug for each 1/3 switch, but unique to the side; i.e. the harness plug for any of the left 1/3 switches is the same; all that changes is the pin configuration on the back of each stack switch. So in order for the logic to follow the switch relocation, the right & left side switch harnesses would have to have common some common wires for the descent control. That's what I'm unable to determine on any of the documentation. So far, the dealership has been cool to this project.

 

This is a challenging undertaking and I've only seen a couple projects that have come close to attempting this. I might be going down a deep hole, but am really driven to try accomplishing it. Photos of my existing switch stack, and a proposed, reconfigured stack (photoshopped; new switches outlined in red) are shown. Appreciate your comments. Thanks!

Edited April 2, 2025 by Nodakrider
Corrected info

[newdude]

All of that and in the end of the day you stand a high probability of being up the creek with no paddle if GM does not support any sort of programming VCI to add park assist.  

 

Which you stand a very high probability of that happening.