Going back my original post a few days ago. A few guys responded and thx. I had a chance to shoot a video in between the rain storms.
I started at the drivers side front and went clockwise to end up at the actual troubled rear drivers side window, which I originally posted about but did not explain well enough.
Engine is on. Down and up and you can hear the switch clicking each time I touch it on all the windows. So likely not the switches.
Bit of dimming and slight drop in the battery volts when holding the switch of one window or more so with multiple switches, e.g. both front windows.
Towards the end of the video you will hear the drivers rear window dogging it and very slow coming all the way up, even though it of course is only half way down.
I’m thinking that one regulator is going out based on the sound and lack of performance?
AC Delco, Dorman or other to replace?
Alternator and battery seems ok? Holds a steady charge and all other lights and functions are bright and steady.
Any further advice or thoughts are welcomed. Thx.