1999 pontiac montana power window problem

the passenger side window stuck down. I tried a spare master switch from the shop on the driver side and no change. i tried a new motor on the passenger side with no luck either. if i unplug the motor and plug it back in, it will work up and down from the passenger side. i took it apart again and now it is working from both sides. i have looked for broken wires where the harness comes through the door and into the cab. i am at a loss. i had already figured out which wires were which but i was looking for a whole schematic to figure out how power feeds between the two side and where ground is. anyone have ideas?

hi i had the same problem with my montana any problems with locks yet .all i did was take both switches out and cleaned them up about 2 years ago and the problem went away  i was told by chevy that these switchs have been a problem. hope this solves your problemgood luck

kirk