LT1 will start and die...is it IAC
 

i ahve check fuel pressure and its good, fuel pump is fine (dyno afr showed to be 13.0 - 12.0, so im not lean in any way)

i was told to check the IAC, i did, and then cleaned it with only a shop rag to get the tons of build-up off of it.,.....this fixed it for a few days, now its back....just wanted some advice from people who have had this prob b4 thanks

Cleaning it will not always work, get the new one and forget this problem. I did so ...

Thanks for the replies, cleaning it was only a temp solution, gonna go ahead and replace it

Idle Air Control = IAC

You've got the right idea/info. Replace it.

for anyone have this problem........the IAC is a possible culprit....it fixed my problem!!!