TBI ECM Codes?

Jul 13, 2003
Folsom, CA
Where can I find out how to decode the lettering on a TBI computer? I have two ECMs one is AMUS on a 1227747 ECM, and the other is AWLC, don't have the ECM # here, but it came off a 1992 Chevy pickup and it is not the 1227747. I tried on the internet, but couldn't find a site that decoded these.
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