I have a 2003 Durango that had ran fine. 4.7 with 129615 mileage It now shows the "no bus" with all that goes along with that issue : no gauges, wandering shift indicator. It will start and run fine. I have replaced the PCM(remanufactured unit) ,the crank sensor,and the throttle position sensor-both new.What do I try next ?

 

You forgot the Cam sensor, MAP sensor, AC High side transducer, all of the O2 sensors.



JK. If the truck starts, I doubt it's a powertrain BUS issue. Mess around with your instrument cluster connectors and check EVERY fuse.