2010 Cadillac SRX Luxury: I bought this a few years ago and the passenger window goes up and down from the switch on the door but doesn't go up and down from the driver switch. I have the Xtool D7 and when I check the actuator for the passenger door nothing happens but when I get the drivers door then both windows go up and down. This has always happened and the person I bought it from is now dead.

Anyone else have this happen and know how to fix it?

Thanks for your help