Passenger window will not roll down(not the regulator)

I was driving when I tried to roll my passenger side window from the driver side switch. . . . I get nothing.
Tried the switch on the passenger door, works just fine. . .
Get home, same ****. . . Try it one more time out of about 10, works fine.
Dead again.
Swapped the BCM. You gotta have a spare BCM when you own a Camaro

Works perfect. . . .
Swap the old one back in, works every time. . . . Really, WTF?
Opened the original BCM, looks perfect, no cracks at all.
If it happens again, try wiggling your finger side to side on the switch and see if the movement will get the switch to make contact.



