ECM part numbers
I have a question on ECM part numbers if anyone can help?
Its a 1992 LT1 and the ECM is on top of the battery.
There is a 4 character code in the top right corner, a 'Serv No' number, and 2 other numbers underneath that.
Can someone tell me what each number means please?
I have found a used ECM for my car but the only number the same as my current ECM is the 'Serv no'.
What numbers need to match for the ECM to be compatible?
Many thanks in advance,
Bryn.




