When pressing window button the rear windows will not go down

Hey Doug, it sounds like the master switch has gone bad which is where the power runs through of the rear switches. Here is a guide to help you test and replace the master switch and wiring diagrams so you can see how the system works:

https://www.2carpros.com/articles/electric-window-repair

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

Cheers, Ken