Changed crank sensor and coil, still no spark and now no fuel pump running. I’ve had my fill selling truck don’t have time for the ghost chase, thanks all for your help. Time to buy a Chevy… lol kidding. Not!!!!

 

The no-bus error is a real bear to troubleshoot. ANYTHING on the five volt bus can take the whole thing down. Unplugging stuff, one at a time, and testing to see if the bus comes back is one method of chasing it. Sometimes it works, sometimes it don't.....

And you get more at sale for a truck that runs, than one that doesn't.

 

Figured it out, changed computer now back up and running thanks to all who responded