| Re: Found this GM site that displays all your ECM updates, etc. with your VIN!
That site we use to check CVN numbers mainly.
It is the key to doing what everyone whines about, checking to see if you have modified the calibrations from stock.
Otherwise all it is good for is to see calibration history.
To know what is in the vehicle you have to use a scan tool to retrieve the calibration numbers.
It is a remnant of something we used to use to identify PROM information back in the '80s and '90s.
I rarely use that application, maybe 3 or 4 times a year.
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