i have a two door, 1995 grand prix. my drivers side window has stopped working. it's not the switch and the window moves up and down while pressing the switch if i give it some help. i'm assuming this is the motor? i bought a new motor and managed to disconnect the old one to test the switch on the new one and it works with no problems. my issue is that the motor is pretty well hidden within the door. is there a way to gain access to it or am i better off taking it to a mechanic to replace the motor? or could i be totally off and it may not be the motor at all?