How To Replace ICM (Ignition Control Module) on GMC Safari & Astro Van

How To Replace ICM (Ignition Control Module) on GMC Safari & Astro Van

Here is how to replace the ICM – ignition control module on a GMC Safar or Chevrolet Astro van. The ICM can wear out over time and cause misfires. Sometimes …

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Michael Gates says:

Had a friend tell me my problem could be the emission control module is
that the same as ignition control module ? 1994 Chevy Astro with throttle
body no carb. The van will start and run for maybe a minute and then die
after that it wont start back up then maybe start again later maybe not.
Have replaced fuel pump and filter still same problem.

bangalorebobbel says:

wondering whether You should try to fix that gasket part … no idea
whether it is required here, but anyhow it remembers me on my good old VW
Käfer (beetle). There, some humidity entered the distributor cap and
condensed at the inner walls when it turned cold outside. Result: first
just some malfunctions, which could be easily cleared by wiping the cap
inside with a dry cloth – then after some days short circuit.

bangalorebobbel says:

yes, maybe a good idea – that “rust” may be even dust mixed with some small
metal particles resulting from all these short circuits, which most
probably result from humidity – means that ICM may meanwhile run like a
sparkler on a xmas tree 😉

hoohoohoblin says:

You,re welcome.

hoohoohoblin says:

I should look for the gasket next time I go to the auto parts store. It may
be the reason things inside the cap are so rusty.

nick evans says:

Great tutorial, thanks for the helpful instructions.

hoohoohoblin says:

He might have meant the ECU, which is the brain that tells the engine how
to run. I made a video showing how to replace it on my van. It is pretty
easy to do.

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