I have tested my injectors for 12v current and alternating grounding (on/off) as advised by another TGO member.
I have constant 12v when ignition is on, to both terminals of all 8 injectors.
Its as if the pcm has decided to ground them full-time when ignition is on.
Needless to say the car won't start, and i'm pretty sure no fuel is being discharged from the injectors as well...

Please help!

 

Correct me if I am wrong but isnt the injectors pulsed only when there is a signal from the ignition module. In the A-3 chart there is a test where you touch a test tight to one of the pins on the module and everytime you touch it the injector is suppose to pulse. It also says to use a test light and touch both pins on the harness and the light should light up. Look at this page and see if it helps.

http://www.chevythunder.com/ses_chart_a3a.htm

 

Many Thanks,
Thats awesome, i'll get to it!