PCM Pin assignments on LS3 SS
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TECH Resident
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Joined: Apr 2003
Posts: 847
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From: Bay St. Louis, Ms
Does anyone have a pin out diagram for a 5th gen LS3 PCM? Doing some cleaning up & probably switching to a progressive controller. It would be nice to have a full pin out diagram, but main ones are TPS & Tach out (RPM). O2's would be nice to use with a safety switch, but not necessary. All of my stuff hides nicely under the engine cover, but I'd like to get the TB extension harness out of there.
Edit: they just made it illegal to have nitrous in your car in my state. Trying to make it less obvious.
Edit: they just made it illegal to have nitrous in your car in my state. Trying to make it less obvious.


