Computer will not relearn

That is a code for the cruise control not coasting. Does the cruise work?

The system will not relearn anything if there is a code. I have seen the steering wheel clock spring break causing the code which when fixed will allow the reprogram. Here is a guide to help you see what you are in for when doing the job and diagrams below to show you what it will be like for your truck.

https://www.2carpros.com/articles/steering-wheel-clock-spring-removal

Disconnect the battery before you begin. Check out the diagrams (Below). Please let us know what you find.

Cheers

Has this thing been modified? Like with one of the bully dog as an example pcm redo? Thatmay be your problem. Or it may be a bad module as i'm assuming you have tried to reprogram the module and that is what is screwing up. I am also assuming yo have checked all the circuits for shorts etc as well as poor connections or connectors. There is a tsb on this 09-04-21-001,
but not sure that it will help you. Also was the tccm replaced? Kinda sounds like it but it may have been one of the other issues. Other than what I've suggested prior I have no idea. Also here is a thing on tips page, maybe not flowing a fuse but still shorting out causing your problem.

If you have fuse 67 30 amp popping (is mis-labeled on wiring diagram as being a 10 amp fuse), look right in front of where your left knee would be if you were sitting in driver's seat, where the wires come out of the t-case module they can rub on the metal support bracket that's right by it, shorting it out the ground in pic is clean and good i'm assuming as well. Can't think of anything else unless another trans wire is bad or poor connection causing it.

This may be a screwy bu the tccm also grounds through the position actuator. Do you possibly think that the actuator sensor isn't grounding enough to cause this problem. See pic.

Good to hear, please use 2CarPros anytime we are here to help.

Cheers