I went to drive my GT yesterday and it would not start, engine cranks OK. Could hear the fuel pump priming.

No Tach movement off zero RPMs, looking like an Ignition problem.
Testing ignition components with a Ohm meter, I found that the distributor cap had a high resistance reading between the center coil terminal on top of the cap, to the spring button under the cap. The meter had a reading of 10.0 Meg ohms.
What should the resistance measurement be on a good Dist. cap for the center terminal ?

Replacing the Ignition module and Dist. cap got it running again!

High resistance in the high voltage side of the ignition can kill an ICM. Usually it's bad spark plug wires, but I guess a bad cap could do it too.

high resistance in wires/plugs causes spark to seek out an easier path.
i have seen it several times when the spark burns down through the rotor back into the distributor and killed the icm.
replace cap and rotor with icm or whole dist.
avoid Cardone parts.

Allot of thing can kill ICM.
Some are here...
See my Cave, HE Ignition

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Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should.
(Jurassic Park)

The Ogre's Fiero Cave (It's also at the top and bottom of every forum page...)

I went ahead and ordered a new cap and rotor, used the old cap to get the car running. Will replace the Spark plug wires too.
The rotor had a dusting of fine black power, which was cleaned off.

Thanks for the replies, Great info on your web page Ogre.