Yes and everything comes up normal. Could there be a possibility of a partialy clogged converter?

No, the cat wouldn't cause the off idle cough and stall.
I think you need to test the fuel pressure, it should be
43 PSI, most injection systems run lower at about 36, even
if it were at 36 it would be running OK.

Weak fuel pump, an internal leak between the pump and the feed line
inside the tank, or the fuel pressure regulator. If the regulator is bad, when
you pinch off the fuel return line it should go when you apply throttle, if it's
the same, I would say you got a bad pump or an internal leak inside the tank

Wild

ok pulled the plug at the front of fuel rail and mounted a gauge there. Turn the key on and the pressure climbed up to about 48-50lbs.  I pulled the crank sensor to see if it was broken or anything. Outside of tons of oil and silicone on it everything looked fine.The oil pump seal is leaking very badly,but can't find anything else wrong up front. Brought the timing marks up to top dead center and checked rotor position,it was on the mark.The idle that was there yesterday is gone now as it won't even start. I'm just ready to send it to the local
chevy dealer and let them figure it out.

Codes don't say crank sensor is bad? it's got to be a sensor
problem of sorts, the other potential problems you have checked

ok pulled the plug at the front of fuel rail and mounted a gauge there. Turn the key on and the pressure climbed up to about 48-50lbs.  I pulled the crank sensor to see if it was broken or anything. Outside of tons of oil and silicone on it everything looked fine.The oil pump seal is leaking very badly,but can't find anything else wrong up front. Brought the timing marks up to top dead center and checked rotor position,it was on the mark.The idle that was there yesterday is gone now as it won't even start. I'm just ready to send it to the local
chevy dealer and let them figure it out.

So, did you check the fuel pressure with it running or just turn the key on and check the pressure?  If you didn't do it with it running, then you need to recheck it.  Just because a fuel pump will build pressure, doesn't mean it will maintain pressure, once you start the engine.  Also, rev the engine and see that it maintains pressure.
IIRC, if the crank sensor it bad, it won't run at all.
Check all the fuses, make sure one didn't pop, for whatever reason.

Ok got it running where I can goose it and it stays running. But the timing with the light is off the scale. It's so far advanced it shouldn't even be running. But I'm remember a post from another site about about the key way on the cranks getting wobbled out. I'm going to look in that direction this afternoon. Any thoughts?

Did you check the ignition timing with it frozen? or are you checking it against the read out on the scanner?

Checked it with the jumper wire in place.

Yes and everything comes up normal. Could there be a possibility of a partialy clogged converter?

had a clogged converter cause this problem on a ford explorer so yes it could be a possibilty