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Old 03-16-2016, 08:57 PM   #6
Mr.Chevy4x4
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Join Date: Jul 2007
Location: Sims, NC
Posts: 531
Re: What is this connector?

It was for the ESC (electronic spark control) module that those trucks came with (plugged into the distributor). It retarded spark advance based on a knock sensor that was on the lower passenger side of the block.
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