Hi and thanks for using 2CarPros. Com.
I just went through three different wiring schematics and the result was the same each time. The only thing these items all have in common is the body control module, (BCM). Grounds are in different locations, so I cannot see how that is an issue.
The BCM consist of many different modules that communicate with many of the vehicle's relays and components. Its primary function is to eliminate wiring in the vehicle.
I would suggest having that component tested at a shop where the proper equipment can be found. It is not a cheap part, so I would not recommend just replacing it.
Let me know what you find.
Saturday, September 26th, 2020 AT 2:40 PM