PCM wiring help

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Sep 23, 2012 | 03:35 PM

L.E. Day

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From: Kingsburg, Ca.

PCM wiring help

Finishing up stand alone 2007 5.3/4l60e blue and green wiring harness. Where does #14(orange/black) UART serial data and #15(dark blue/white) UART serial serial data on the blue connector go?

Sep 23, 2012 | 10:14 PM

ls1nova71

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From: Liberty, MO

They both go to the TAC module. Orange/balck to pin 12, and dark blue/white to pin 13.

Sep 25, 2012 | 07:30 PM

L.E. Day

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From: Kingsburg, Ca.

PCM to TAC wiring help

Thanks for the fast reply to my question. Made the connection today,I am that much closer to starting the engine

Dec 13, 2019 | 07:08 AM

Plumber452

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I know this is an old thread but, where does the Orange/Black serial data wire off of the GBCM connect? I understand that if you keep this installed you get full output of your alternator. Another member, Fivetears, posted a nice piece about this but diidn't say exactly where to connect this wire.

Thanks

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