IN DESPERATE NEED OF HELP......

i have a 1997 chevy silverado brand new engine and transmission ....
everything factory stock no aftermarket equipment,no theft deturrent system.
HERE'S THE PLAGUE....................
NO INJECTOR PULSE ON CYLINDER 3 & 4 ............EXCEPT...........WHEN VEHICLE REACHES OPERATING TEMPERATURE AT ABOUT 180 DEGREES...
I CAN PUT A NOID LIGHT ON CIRCUIT AT PCM AND WATCH AS THE CIRCUIT COMES TO LIFE.......INTERMITTENT FLASHES AND EVENTUALLY A STEADY PULSE............THIS IS THE MOTHER FREAKIN NIGHTMARE ...........DOES IT EVERY SINGLE TIME WHEN ENGINE IS COLD.....WHEN AT OPERATING TEMPERATURE DOESN'T MISS A BEAT RUNS AWESOME.........SO HERE'S
WHATS BEEN DONE ............FUEL PRESS 55 P.S.I. BRAND SPANKIN NEW MFI SPIDER INJECTOR UPGRADE OVER FACTORY ORIGIONAL...ALL PCM GROUND CIRCUITS TERMINALS REPLACED...ALL PCM POWER INPUTS 12 VOLTS...REPLACED ALL INJECTOR GROUND CIRCUITS WITH NEW TERMINALS
AT INJECTOR BODY CONNNECTOR ALSO NEW WIRING BACK TO PCM AND ALL PCM TERMINALS REPLACED ALSO DID THE SAME FOR ALL POWER CIRCUITS NEW TERMINALS WIRING AND PCM TERMINALS NEW STILL SAME ISSUE..........I AM AT A LOSS NEED HELP,.... ANYONE?.............

 

Forgot to mention also has reman pcm and both pcm's i have exhibit the exact same condition when cold until vehicle warms up'
then runs great......i don't get it...... Is it possible that the crank sensor and camshaft sensor i bought from autozone being aftermarket and not a/c delco can cause this issue ? .......

 

Welcome to the forum.

You'll get more views of you post in the Silverado section.

Cap lock=SHOUTING. And hard to read.