My 2008 Chevy Equinox driver side window quit working, the motor is working, all other 3 windows are working, what could be the problem.

The harness at the drivers door is a common problem on the Equinox, you maybe able to fix the wires but it may be less expensive just to replace the harness.

possible faulty switch/wireing/fuse/relaysolanoid or motor unit for door

It very well could be, if you can hear the motor running then it's not connected to window regulator.

I had same issue, you must remove driver door panel and you will notice some wires have broken after constant open/closing of door. Reconnect wires and you are good to go !

If it was working fine before then most likely the switch has shorted or the wires to the motor have come disconnected, worst case the motor is bad, if the blinker is working but not making noise, then no need to worry, it is possible that you just need a new blinker relay.

their are fuses that control the windows so check those out then check the wiring with a test light if the poblem is still their you ma need to replace the driver side window motor

1. Start the car and leave it idle.
2. Hold the window button down all the way, until the window is completely down.
3. Let go and push it down again and hold the window button for 2 to 3 seconds then let go. (You should be able to hear or feel (very faintly) the motor/sensor reset.)
4. Pull up on the window button and roll the window up until it is all the way up, when it is up let go.
5. Pull the button up again for 2 to 3 seconds. (You should be able to hear or feel (very faintly) the motor/sensor reset.)

check the fuse to the driver side window.

Check inside wiring by the driver's side door hinge. Remove the rubber boot and you will find broken wires. Make a splice and you are fixed!