can u hear the motor when u hit the switch? could be the switch itself...although most likely the motor, best way to test is take it off and connect it directly to a battery, if it turns on, than its good, if not than bad, also u check the fuses? i havent really taken a detailed look at ours(well i have actually) but i dont really have power windows, so yeah...there could be a pwr window fuse blown...