Replaced pcm no buss still lit

Couple months ago I replace the crankshaft and camshaft sensors. And truck has been running beautiful. One morning I came out to start it and no bus was let truck crank but would not turn over. No power was coming out of the PCM. Replaced the PCM and the truck runs mint but I still have no bus light on the dash....HELP!!!!
0
Comments
Using a DVOM (digital volt/ohmmeter) what voltage do you measure at pin 38 of connector #1 Violet/White wire at the PCM? Switching to frequency what do you see?
Compare those measurements to Pin 2 of the data link connector.