whats causing my driver side window to roll its self down? does it only with the truck on. some times once i start the truck and other times while im driving down the road.??? is it the GEM? or just A Relay?

My GEM is already bad because during cold wet days my window wont roll down only up. everything els the GEM controls works fine. and my window does not leak water. any help?

 

The GEM module reverses polarity sent to the window motor through the relay (in the passenger compartment fuse box). You might need to clean/check the actual switch contacts, as if they're touching, resulting in the window going down, as the first signal (closed circuit) the GEM receives. Don't feel bad - mine ignores the DOWN switch contact 90% of the time.

 

So today i got a GEM module from a 99 expedition 2wd like my truck and it turned out to not work with my truck. some functions didnt work like my windshield wipers, and my air bag light came on. but my window worked lol. also the power to my windows stayed on even when the truck was off and key out. so i put my old GEM back in and the window started working again so ill see how long it stays working for. as for the window rolling its self down, i put a new relay on the driver side but i did not know there was one on the passanger side so i am going to check that out tomorrow, because its still doing it just not as often and sometimes it will stop half way.