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Does anyone here have, or know where to obtain a complete list of the available software update programs for the C6, along with descriptions of the issue each one is meant to remedy? I’m having an independent repair shop flash are a couple of updates next week and I’d like to browse the list beforehand to see if there are others that may be beneficial. I understand that rather than making owners aware of any available updates, GM’s policy/procedure is to wait until an owner comes to the dealership with a complaint. If that’s the case, there is no practical way an owner can be made aware that an update may be available for any number of issues they are experiencing. That policy may work for most of the Buick crowd but in my opinion, is poor for enthusiasts, which describes the vast majority of all Corvette owners.
GMSI for your car year, go to TSB list, and do a search for "upgrade firmware".
Short of this, TDS and just go through each module to check the firmware list by date for the module, and compare it to the firmware in the module it currently running.
As for if the module really needs to have the latest firmware update, unless you have a problem, not so much.