Yeah, I think the other guys called it: it sure does sound like the neutral/sw.
While you are at it, I would certainly consider buying/replacing the brake switch too, proactivaly, if you haven't yet. Or at least buy a spare. They flake out too and spoof a lot of traction control issues. It shouldn't cause your current issue, but I'm just saying that's another item on these trucks that go, and if you're replacing one item under the column, could do both and never have to worry about the brake sw. And it's a 5-min replacement job.
Since it doesn't cost anything, you could also check your relays under the hood. The smaller gray ones. One of them is the starter relay (check the key on the lid), which you could swap out for one of the other similar adjacent relays and see if that changes anything. It doesn't seem like it would be, but you never know.. Starter relays seem to go flaky after many yrs. Mine's been acting up. I looked at the contacts inside the relay with a jewerler's loop and yeah, they're pretty badly pitted. I haven't had a problem since I swapped out another relay for it.
