Joe Camper

I'm having same issue..2016 Sierra 1500. Door ajar always showing, master switch doesn't work for windows but locks and mirrors work. So I exchanged switch for new one, nope. Disconnected plug to motor and have constant 12v to top left of plug but not top right. I tested connectivity to motor (from the 2 prongs in plug receiver and nothing. I ran direct power to the motor by 12v battery to the 2 prongs and nothing. Suggestions?