Truck does not want to start or shift from park

We had gone to breakfast one morning it was running fine, an hour later we turned it over it started running really really rough and then would shut off. We tried to turn it over it would just go on and on and on and on, but would not start. Then it got to the point to where we could not even turn it over at all and the transmission will not come out of park. All my lights blinkers and everything come on, but my gauges do not show me what I have. I have replaced the ignition switch the starter relay and the power-train relay. When I turn the key over everything clicks and sets but I have no start and still will not come out of park.