C7 USB Port
Le Mans Master
Joined: Oct 2005
Posts: 7,002
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2014 and 2015 use the NGI 2.0 versus the NGI 2.5. When you replace the module you can get NGI 2.5, but NGI 2.5 expects the 2016 CAN Message List. If any CAN messages changed from 2014 or 2015 then those functions won't work.
All C7's are Global A but Global A doesn't have a "master CAN list" instead it changed every model year and some changes were "breaking" and required coordinated module updates. Other OEMs (Chrysler and Ford) don't do this, and therefore its way easier to swap modules between model years. GM for some reason did, and when I worked with them I commented on how that was stupid (I worked with Chrysler before GM and Ford after).
All C7's are Global A but Global A doesn't have a "master CAN list" instead it changed every model year and some changes were "breaking" and required coordinated module updates. Other OEMs (Chrysler and Ford) don't do this, and therefore its way easier to swap modules between model years. GM for some reason did, and when I worked with them I commented on how that was stupid (I worked with Chrysler before GM and Ford after).
