Hello,
It sounds like you might have an issue with the transfer case control module.
Its probably not the relays, as the relays controls from low to high and high to low function for the transfer case.
The transfer case control module is located behind the glove box (see diagram).
I have attached diagrams for your reference.
https://www.youtube.com/c/2carpros/search?query=transfer%20case
Please let me know of any questions.
Thank you.
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Sunday, August 29th, 2021 AT 8:11 PM