89 Jimmy: Something killing Spark (Coil)

[Kurkus54]

I have a 1989 S-10 Jimmy with a 4.3L Engine

I have replaced the Distributer, cap rotor and ignition coil

We drive the Jimmy home from the mechanic, park it, and when it is started up again and driven, it dies soon afterwards

No spark is getting to plugs

I suspect something is killing the Ignition Coil

What could kill the coil, could it be the computer doing it?

any suggestions would help a lot