If all the turn signals stopped working and the other lights work then this is most likely a multifunction switch issue.
The way to confirm this is test the voltage coming out of the switch to the turn signals. I included the wiring diagram to do this. However, I also included the process on how to replace the switch as if it were me based on this information, I would replace this and then retest.
Here is a guide that will help do this testing:
https://www.2carpros.com/articles/how-to-check-wiring
Let us know what questions you have. Thanks
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Saturday, January 16th, 2021 AT 10:41 AM