Please, I need your assistance. i have a 97 expedition It started a month ago crossing the border from Canada to the US, I stopped at customs booth drivers side window would not go down. During the next couple of days the drivers side window would go down by itself, and I would have to bring the window back up. I have done alot of research on line everyone was telling me it was the GEM Module.
The window switch is good and the window regulator is good. Brought to my neighborhood mechanic, costs me $75 and he said he was 90% sure that it was the GEM Module, he even said that he was tapping on the GEM Module and the window would go down on it's own. I decided to order a GEM Module online to fit my vehicle, received it on Saturday, installed it.[found no moisture around module] Same Problem, window would not go down. Frustrated, I have invested $325 and about 10 hours of my time with no luck, can you please help me. Now I have the drivers side motor unplugged from the switch.

 

If you hold the motor TIGHTLY in your hand and hit the switch, does it work as it should? If so, find a piece of 18ish gauge wire and run a temporary extra ground from the door frame near the motor to a good grounding point in the cab or under the hood. When mine stopped working reliably, I had a bad ground after years of corrosion, etc.

 

by right with the door panel off and the window switch connected but the pigtail not connected to the window motor with a test light you should get light from one pin when the up is depressed and and light when the down is depressed but i'm only getting light when in the up