ECM identification
Thread Starter
Heel & Toe
Joined: Apr 2019
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ECM identification
Could somebody help me with identification of ECM module for Corvette C4 - Is this PROM related to manual transmission 1226430 or to automatic transmission 1226026 ECM?
Last edited by conty; Jul 24, 2019 at 11:08 PM.
Le Mans Master
Joined: Sep 2013
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From: near the thumb in the mitten
Google GM Prom Broadcast Codes you will find downloads that may help ID Prom.
3940 CDR is broadcast code. Original prom broadcast code is also on the original ECM label.
3940 CDR is broadcast code. Original prom broadcast code is also on the original ECM label.
Last edited by Kevova; Jul 25, 2019 at 10:02 AM.
Thread Starter
Heel & Toe
Joined: Apr 2019
Posts: 16
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Thanks a lot, it helps. I do not know, what I have to look for. Still many things to learn. In the meantime, I have got from a seller an ECM's label, picture attached. I need it for swapinto my C3 1982. So I think, I got it!
Thread Starter
Heel & Toe
Joined: Apr 2019
Posts: 16
Likes: 0
Thank you for your confirmation. I looked for this ECM (1226026), but a conversation with a seller take a long time due to different time zone... I did not want to miss this chance to buy only one ECM, which is able to swap into C3 (1225550). I got only a picture of PROM so I tried to found out, whether is from automatic transmission (manual do not fit) and it is no problem to buy aftermarket PROM...
