I am running a 2015 Corvette Stingray that I got new last March 2015. I just had it in for a seatbelt recall, and asked the dealer to install the latest upgrades to the ECM/PCM. I just downloaded it and looked at the operating system. It is 12665218, the same as it was a year and a half ago. Also, a comparison log shows no changes. Is there a way to tell what my latest OS should be?
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