It sounds like the BCM is out which controls both of these systems. To be sure lets do a CAN scan which is the future of automotive repair. you can get a CAN scanner from Amazon for about $50.00. here is a video to show you how:
Here is the BCM replacement instructions. Check out the diagrams (below). Let us know what happens and please upload pictures or videos of the problem.
Images (Click to enlarge)
Tuesday, February 23rd, 2021 AT 6:37 PM