pcm unit

Could anyone tell me where I can get a new pcm unit and or have mine flashed or rebuilt any help would be geat.

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I'm looking to get a new/used working one for a 95 Z28. I think mine went bad...(Story below if anyone cares :)

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Once day I was driving to work and the car just died (Seemed to happen the moment I lefted my foot off the gas - but not evertime) so I pulled over to the side of the road pumped the gas a bit then it finally started again...got a little further down the road and it happened again...Finally got all the way to work, parked it and could never get it started again. So I had it towed to the house. Tested the spark coming from the coil (Zapped me good so I know that was working also tested it with spark tester- also have MSD ignition and coil) then proceeded to test the spark coming from the spark plug wires...got nothing!

So I figured I narrowed it down to the Opti must be bad. Well as a matter of fact I just got finished replacing the opti about 30min ago. Darn car is doing the same thing...so I had my brother tap the PCM a little (just out of desperation) and I'll be damn if it didn't crank for a bit as soon as he stopped tapping it would stop running. So we took out the PCM, took it apart, blew out the inside with compressed air then put it back together and re-installed it. This time the car started and ran for like 10min. then just when I thought my problems were over it dies again. While it was ruinning it idled and responded to gas great...

So does anyone have any clues as to what to do next? I noticed the check engine and check gauges like comes on when in the start position (like when the car dings but is not trying to start) and stays on. I can't remember if that normal or if they should go off. Also, it threw no check anything lights whille it was running.

I really don't wanna spend more money on a new PCM just to find out that it may not be tht either. What should I do next?