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Hummer Knowledge Base

The Hummer Knowledge Base

Decoding Numbers on PMDs/FSDs:

Date codes/serial numbers of the FSD/PMD....

The imprinted code on an FSD looks like this....


35483 denotes the model number of the FSD. This is the most current model. 34264 is a second gen, and 30214 is first gen.

XX denotes year of manufacture. 05, 06, and 07 is what you want to look for here.

YYYYY denotes month and run code. This part can be rather cryptic, since I've seen 13YYY to 17YYY codes here before, and there's only 12 months out of the year, so they may do something different here.

The most important part is to look for 3548305, 3548306, or 3548307 as the prefix. The last 5 numbers are irrelevant.


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