Thanks to both of you! I'll start investigating the TIPMs from the diagram. New today, however, is that the the other 3 windows work--most of the time--when the car is running and in Drive. Those 3 work intermittently but the drivers-side rear window does not work at all. There is no response to hitting the window switch, not up, not down, not from the driver's switches, not from the driver's rear door switch...no motor sound, no click, no movement, no hum, no buzz: just nothing. I am hopeful it will "magically" just roll up one of these times. Until then, I'll try noodling the TIPMs. This is frustrating.
So far, JEEP='Just Empty Every Pocket' has been true for me