98 k1500 turn over but no start? help please!!!!!

[central09er]

heres the details its a 98 automatic 5.7L 4x4

cut off while driving down the road.... now not getting any spark...

have replaced:
-wires
-dist. cap
-rotor button
-coil
-ignition module
-camshaft position sensor
-crankshaft postion sensor

did have cel on but 2 code readers both said they could not communicate

tested obdII connector was getting power to 3 prongs, dont know if/which one was the power prong though

after turning motor over several times the cel went off?

all fuses look good

tested for power on the connector to the coil and ignition module and niether had power?

any ideas? im thinking computer maybe?