I have a 2007 charger, police package, 5.7 V8 and the two forward windows are stuck in the down position. I've only had a chance to take apart the passenger side apart. The motor only goes down and the regulator cable is still intact and slides nicely on it. Is it common for the window switches to fail halfway like this? Is there any way I can test the switch to make sure it's actually that and not the motor? Any information is appreciated, thanks.