95 jimmy runs good for 5 min stalls wont start for awhile

hey all please can someone help!!!i have a 1995 gmc jimmy slt with the 4.3 vortec and 4 wheel drive. it was running ok...once in a while it would stall out but not very often. but now it will run for 5 minutes or so and stall out and won't start until it has cooled down.i have tried everything i ca think of and read alot on the net about it and am really sick o this problem.please give me any advice you got!!

things i have changed/done include:
plugs
wires
rotor/distributor
fuel filter
engine coolant temp sensor
ignition control modual

please let me know if you have a solution or thought! i have seen this problem with alot of people on the internet but no clear solution.

thanks for your help!!

well i reinstalled the ignition control module(first time i didn't use the good dieelectric grease) so then is started right up and ran for like 20 minutes and i even took it around like 20 blocks and got back shut it down and it started the first time i tried then it wouldn't anymore. now when i turn the key it is chugging like it really wants to start and after i let off the key it still chugs for a second and it wasn't doing that before. i think that perhaps i got two problems at once. fixed the first part but what could be the other problem.