Starts then dies

[XfireZ51]

Got a good portion of my interior conversion done and part of that included dropping the steering column. Took the opportunity to address the column "slop" by installing one of Marc's oversize pins. I was able to finally pull the old one out but not before slicing up my thumb on some sharp plastic trim and clip. Sound familiar?
Have all of that up together now, BUT, when I went start the motor, SECURITY light continues to flash even w key in ignition and turned to START. I can hear the FPumps spin up and motor will catch fire. Runs for about 5-10sec, then dies.
Any amount of accelerator does nothing to keep it alive. I suspect fuel is being cutoff and wondering if there is a correlation between SECURITY light flashing and No Run. Could I have pulled some wire at the column causing a VATS issue?
Anybody run into similar situation? Marc advises to check VATS harness connection near ignition switch. BTW, I do have Oil Pressure and SES light flashes correctly for start-up. Right now it's too friggin cold in garage to start tearing out hush panel and knee bolster.