[Evsman]

I can't help you. I have the exact same problem. A 1999 K-1500 with 5.7 misses just like you have described. i changed the cap, rotor, wires, plugs, and had the injectors cleaned. It still does it. But it is intermittent. Sometimes it doesn't do it it all and other times it will barely keep running. No trouble codes and the problem appeared all at once. Ran great and then all the sudden one day it started doing this. If you figure it out let us know!