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View Full Version : Anybody have an ecm pinout for an 03' c5?


Me gags
10-23-2006, 06:00 AM
Trying to hook up some nitrous, and a window switch, but I can't find the tach wire off of the ecm. Any help is much appreciated.

YoMommasTA
10-23-2006, 08:44 AM
i can't get the info to post??? it won't attach,I have the info in a web page format saved from the gm data cd.Any ideas how to post it?If you post your email address i can send it there.

TrifectaPerformance
11-18-2006, 02:04 PM
Does that PCM use a RED and BLUE connector? If so, it's pin 10 on the RED connector. That's from my 1999 F-body service manual but as long as the C5 uses the same PCM it should work.