ECM or other issue

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Tavi

Vehicle enthusiasts
Joined
Apr 11, 2013
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North east NM
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92 454 auto k3500. Not sure if this is a regular problem. Never heard of it before.
While driving, I came to a stop. Engine just died. Checked the fuses and the ECM-IGN fuse had blown. Swapped out a fuse to try and get home and this little guy let go of it’s magic white smoke. Do these go bad often or should I be looking for a short upstream.

Also. If anyone knows what this part controls so I have a direction to start looking. And to order a new one.
 
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