1995 GMC S15 WON'T RUN FOR NOTHING!

Were the repairs done to cure the problem OR were they done prior to the problem?
There are a lot of things that could cause your problem. It may take a while to narrow it down.

well water pump was leaking,causing overheating.after repaired still overheating,had head gasket done.after this is when all went down hill,had "miss" problem before ,but just minor,was egr valve,carbon clogged little hole. i've taken egr valve off at least 4 times for this ,my wife was driving ,and it started to miss she took to a auto parts store,they told her it was a vacuum leak ,worked for a while,then the fuel pump went,don't know if related ,doubt it,but had it replaced (this was done before heads were done) it seems we fixed one problem,another one comes up.this recent trip to auto repair,tech "said" he saw smoke coming from coil says he put another one on,taking his word mind you,still nothin,he also changed fuel filter.so thats pretty much where it stands now,at repair shop and not runnin,any other info you need please feel free to email me .
thank you for your reply
tom lanning

WOW, Lot's of stuff at once. Well first I would probably find a different shop. Throwing in the towel just don't cut it with me.

OK I will make the assumption that the head gaskets were done properly. The thing there is that pulling the heads and cleaning them and testing them should have almost eliminated the carbon problem with the EGR. BUT..

Anyway. Fuel pump is kind of common.
What you need to do is find out if the problem is NO spark, No Fuel or what it actually is.

Spark is easy to check. Loss of spark could be a bad ignition module, bad coil, bad distributor cap/rotor, bad wires, or the computer or ignition switch.

Fuel could be a bad pump, bad filter, plugged lines, bad fuel pressure regulator, bad injector unit, pump relay, oil pressure switch.

That is why you need to figure out what the base problem is and go from there. Lots of VERY expensive parts involved.

thanks for the info......another question,would a bad ground wire do all this crap? anyway, as of monday i will be taking the car to another garage,and perhaps before to long, i might be driving my jimmy.
thank you again for the info,i'll be sure to reply in the future,and let you know what the problem was.
thanks
tom lanning

A bad ground could cause missfires and even could cause failures as the power tried to find a path to ground. However you would have seen some other problems if it was one of the primary grounds.
Should show up easily during testing.