How loose? Mine are a little loose, ie they have play maybe 1/2" or so. I think that has to do with the get-your-head-stuck-in-the-power-window safety feature that stops the window from doing the strangle hold.
It is troublesome not to hear the motor run. I am pretty sure all of the windows are on the same fuse.
Do you have a warm place to park it? (To see if it works when warm)
I do not know what your technical skills are (and I am not real familiar with inner workings of a 5th gen, just got mine, my last was a 3rd gen so there are definitely some differences but the process is basically the same) but the next step I would take would be pulling the interior door panel off so you can visually inspect that wires aren't unplugged, pinched, or cut. Confirm the window is still in the track and that the scissor lift isn't bound up with a foreign object or itself. Next I would determine if the motor plug was getting power with a multi-meter (you will have to activate the window switch to see). If it gets no power then your problem would be at or between one of the switches. If it does get power you will need to check the motor.
If it is a problem with the safety switch, sorry I have no idea I haven't had to troubleshoot my new truck so I am not real familiar with itm, for all I know it could be part of the motor. I/You would need to check the shop manual to see the troubleshoot tree.