ok guys ive got a real brain teaser here (or maybe its just me :4-dontknow. Front passenger power window..rolls down not up. Replaced motor thinking it was bad. Same issue..Ive hooked up a voltmeter to it and its switching between +12 to -12 when you toggle the switch. So i know the switch is good. Is it possible i got a bad motor from the dealership? or am i missing something? Pls help..thanks.