Sooo I know this thread is outdated by a few years but I was just having the same issue with my 2014 Silverado. Rear driver door ajar message, couldn't control the window from the driver controls and the dome light would stay on (as if the door was open...) anyway, after a little help from Google I found my issue and also the solution. It was a green wire that broke in the Accordion boot between the door and cab of the truck. On mine it was broke on the door end of the wiring and I had just sliced the boot open, used a wiring butt-connector to connect the ends back to one another and then used electrical tape to wrap it up and super glued the slice I made in the boot and bam. No more issues