Window defogger, rear wiper and rear window washer, do not function?

I would first start by checking the LGM1 fuse in the rear fuse panel below the left rear seat, if okay there is a liftgate control module that runs all three, the BCM runs two out of the three. Here is the location of the module and how to replace it. Also, here is a guide on how to check the fuses and the fuse locations as well:

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Check out the diagrams (below). Please let us know what happens.