Q: Driver window goes up and down randomly, or VERY slowly!!

Hi, I had acquired a 2005 Suzuki Verona Ex by mistake 2 years ago. I have the car running very well, no shaking, good idle, floats (smooth) on the highway, no accidents, Tags, plates, passed emissions, etc. etc,.

**The driver side window goes up and down randomly. Sometimes goes up or down, VERY,VERY slowly! Sometime I close the door a few times and then the window will work!!

I am not afraid to take the door panel off and check for loose wiring, but......if I don't find anything....is why I am looking for a precise, expert and very detailed answer. Of what it may be!!

I did spray silicon lube down each end of the window and it didn't work.

**These cars are no longer made and finding a cheap, junkyard regulator will take another 6 - 9 months, if this is the problem???

I was told it was a connection in the door panel problem, but WHAT CONNECTION???

**These are reasons I am looking for a precise, expert and very detailed answer.

My car has 211000 miles.
My car has an automatic transmission.