My rear drivers side window would not come down. This just started the other day. It would not work with the front or rear switch. no humming from the motor. Fuse is OK for the left side windows. I swapped out the switch from the passenger side and still didnt work. However the driver's switch worked fine on the other side. I then removed the regulator assembly by having to cut the cable since the window was up. I removed the motor and bench tested it and it ran with 12V put to it. This leaves just the main front door switch assembly. My question is would a bad front switch cause the back switch not to work?? Also when I press the switch , I get a brief buzzing sound from the switch. Also with the motor connected, it still isnt turning so it wasn't a jammed cable on the regulator. I am getting to the end of what I can troubleshoot, and I hope it doesn't turn out to be a bad wire in the door harness. Any suggestions would be greatly appreciated.