I am not sure if I answered one of your questions in the past but the most likely cause of this issue is the switch. Normally the regulator will bind or fail completely. When it binds, you normally can still here the motor clicking but the way to confirm this is to test for power when it is acting up. Clearly this is not the easiest thing to do but it is possible if you want to put in the effort. If you remove the door panel and access the motor plug just back probe the connector then run wires out and connect them to a multi meter and turn it on when driving the vehicle. This way when it acts up you can see if there is voltage at the motor. If not, then the switch is the issue. If you do, the regulator/motor is the issue.
However, if it were me, I would just replace the switch. Let me know if you have questions. Thanks
Wednesday, October 2nd, 2019 AT 5:00 PM