I have a 2000 Tahoe ("New Body Style") that the driver side window just quit working the other day. No sounds coming from the window, it doesn't even try to go up and down. All of the other windows can be controlled from the master switch, just not the driver's window. If I apply 12 volts to the motor, it goes up and down. I checked for voltage at the connector to the motor, and nothing happens when I opersate the switch. Thought the switch might be bad, so I replaced it with a new master switch. Now I have a nice lighted switch, but no response from the window. Any idea how to troubleshoot the door wire harness?