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« on: January 15, 2024, 02:36:49 PM »
This wording is right above the VIN by month numbers listed. And it’s important!
The list below is Chevrolet's documentation of the end-of-month VIN for the GM assembly plants. * Due to several limitations the VINs in this list will not necessarily correlate exactly with either a specific calendar day or the build week on the cowl tag. The data for some months (especially May and June 68 at Norwood) deviate significantly from actual build dates, while other months correlate well.* We are unsure of the source of these deviations, but uncertainties include:
It isn't known what day of the month was used for logging the monthly production, or if the same system was used for all years.
Vehicles were NOT assembled in the exact order of VIN. For any given VIN selected as the nominal "last" for that month, it is likely that slightly lower or higher VINs might either still be in process, or might have already been assembled.
The build date on the cowl tag is when the body was started. It was attached 3-4 days before final assembly of the car was completed and build week dates did not always align with calendar weeks.
Despite these limitations, the list remains a useful guide for approximate confirmation of date as to when a given VIN was built.
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