More than likely you have an issue with the TIPM but we need to prove this out by checking voltage on the circuits to the turn signals.
Here are a couple guides that will help with this:
https://www.2carpros.com/articles/how-to-check-wiring
https://www.2carpros.com/articles/turn-signals-not-working-blinker
The TIPM is what controls the lighting function and has a circuit board that fails commonly so I attached the wiring diagrams below and the process on how to replace it. It is the traditional fuse block but it has a control panel aspect to it which is the part of it that fails.
Please see this info below and we can go from there. Thanks
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Wednesday, July 28th, 2021 AT 7:10 PM