Last Night i parked at a gas station rolled my window up got back in and the window wouldn't roll down. It was working perfectly until then. Is there any way to tell if its the switch or the motor?

PLEASE HELP!

 

Swap the switches & see if the problem persists.

 

Typically if one window works and the other not, as mentioned already, swap switches. In my expierences, the wires may have fallen off the switch (especially if removed several times and have broken tabs). Second, check the connection at the motor in the door.