The cruise and overdrive go out when truck is warmd up

You may want to check your coolant temp sensor. I read your other post and you said the overdrive works when cold, well it is not supposed to. The overdrive isn't supposed to work when cold to keep from lugging the engine. So it sounds as if it is working backwards. I also remember problems with a throttle position sensor causing overdrive problems but it your symptoms are different, but I thought I would mention it anyway. Good luck