I used to have to help mine go up
If they dont even move a little check for power going to the switch, then check for power going out of the switch. If the switch has power going to it, and coming out of it then the window motor is bad. Had that happen on the front window of my 88 vert. If power is going to the switch but isnt comming out then the switch is bad. Had that happen on my 88TC. If no power check fuse. You can put the window up manually by looening the power window motor so the gears arent engage, pulling up the window, then tightening the bolts back up. Thats how I got the front window up on my vert when the motor went bad. Probbably more of a PITA on the back windows though..