C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

No Start - PCM Dead?

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Old Sep 28, 2005 | 08:11 PM
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From: Warren Ohio
Default No Start - PCM Dead?

I am tracking down a "no start" condition that appears to be the PCM.

The engine turns over. No spark at coil. 11.8v at ICM. Continuity from PCM to ICM...but no pulse during cranking.

The car gradually became more difficult to fire up over about a half-dozen starts...the finally died completely.

Before I order a replacement PCM, does it sound like I missed anything? Is it possible for a PCM to get "shocked" and lose its programming? If so, is there anyway I can test? Does the replacement PCM come already programmed?

Thanks in advance!

-Scott
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