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Old 05-14-2019, 05:45 PM   #2
First c10
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Join Date: Dec 2012
Location: Los Banos CA
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Re: obd2 connector wiring

Pin 58 - Dk Green - Serial Data - This is the Class 2 Serial Data wire that goes to the diagnostic port (OBD2) pin 2.

the link is to the PINOUTS for your year.
http://www.lt1swap.com/2004vortec_pcm.htm
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