So had this weird engine code pop up on my truck. P1780.
Did some searching and came up with the problem of "trans neutral Switch".
Replaced the part(100 bucks shipped of rock auto), light went away for about 30 minutes.
Comes back on, so I think it might be a faulty connection. Some Electric parts cleaner and Di Electric grease doesn't solve the issue.
Today out of random luck I was messing with my tail light wiring, because it was pretty torn up.
Connect the wire that illuminates the brake "light" when you hit the brakes back together and boom engine code gone.
The tail light wiring and Trans Neutral Switch is somehow linked?
But anyways just made this post incase someone scoping google is having similar issues.