(Not a A-Body) 2001 Dodge Ram Truck "No bus" Code, Anyone!?

Do any of your buddies or family drive a 99 to 2001 ram with a V8? Either 318 or 360? See if they would let you put their PCM in your truck and find out if it starts. It won't hurt anything to try. If it ends up that the PCM fixes it, try your local salvage yard. Usually the PCM is one of the first things pulled at the yard, but you might get lucky! I ended up having to buy one from a local parts house that had been reconditioned.