This could be a number of issues. First it could be another bulb that you did not change. Also, this could be a control module issue and on this vehicle that is a TIPM. However, we need to start from the beginning and run through these guides and find out if the basic items are causing this:
https://www.2carpros.com/articles/turn-signals-not-working-blinker
Here is another guide that talks about this issue specifically:
https://www.2carpros.com/articles/turn-signals-blink-rapidly
Lastly, I am attaching the wiring diagram below that we need to test power coming out of the TIPM using a test light. Here is a guide that will help with how to do that:
https://youtu.be/Hlna_kUt7As
Let us know what you find and we can go from there. Thanks
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Tuesday, December 22nd, 2020 AT 6:12 PM