The only thing we can do is keep working backwards to see where power is lost. I looked over the power distribution schematics and what I nightmare. LOL First, I attached a picture right from the battery. You need to confirm there is power to the fuse / relay box under the hood. See if there is power at the main 40amp fuse. You will see wires and fuses coming off that circuit. They run to different locations on different pages of the schematic. However, if there is no power at that point, everything else you mentioned won't work.
Next, see pictures 2 and 3. Picture 2 shows power goes from the power main relay to the components which cover power locks, power outlets and so on.
Power goes everywhere but all starts at the same place. Normally I would say work backwards, but because there are so many things that can cause change, start at the battery and work forward.
I know you have done all the basics, but we need to start at the beginning to see where and how power is being lost. Although you checked most everything, something had to have been missed.
Let me know.
Images (Click to enlarge)
Wednesday, July 10th, 2019 AT 9:12 PM