Chevrolet Camaro 1967-2002 - Torque converter not locking

Hey guys I need your advice. I just bought a Hughes performance 700r4 and 12'' lockup style 2500 rpm converter for my car. I'm driving a stock 1988 L98 IROC with minor bolt on mods.

I had the new set up intalled in my car on friday. So far it works well except for the converter. It won't lockup at all. What should I start looking at to fix this problem?

I took my car to the trans shop today. The harness connections to the trans are working. My next step is to see if the computer is not working properly or if the harness is shorted out some place else. Has anybody else had an issue with the converter not locking at all? The trans shop told me to go back to the GM dealer and let them solve it.