ECM Labels "SNAPSHOTS" & confirmations

[WVZR-1]

Originally Posted by A26B

Good thread.

"AUAH" is the 2nd of 3 prom calibrations for 1990, released 27Sep89.
The last calibration, "AYBK," was released 03Nov93.

Jerry - Using mine as an example I always thought the 3d line was actually a DELCO assigned part # for the "production" PROM OR ASSEMBLY on their assembly line. M92XXXXX could likely be a "date code" but I had never attempted to convert and actually had little/no interest.

M - PERHAPS THE PRODUCTION PLANT (Milwaukee Wi fits), 9 - YEAR, 214 - Julian date (all speculation)

https://history.gmheritagecenter.com..._End_of_an_Era

The more posts with snapshots the easier likely for someone to duplicate what might have been at or very near their build dates. '93 to "end of production" labels might be more interesting than others.