Quote Originally Posted by kidturbo View Post
Ya knew what I was after didn't ya.. LOL. But our previous work in this area seems to be a bit incomplete.. When I changed from the 11 truck OS, to a 09 LS3 OS, guess what also looks to have changed? See attached.

Have you logged any traffic off an 09 or 10 LSx engine in a car yet? All the msg ID's are different on the LS3.. So unless someone has an A2L file to share, I'm gonna need to start from scratch again.. And by hardware / OS to determine where they split....

Who'd of thunk it.. Likely why BCM's are diff also. An

Click image for larger version. 

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That looks like "early" GMLAN high speed traffic.

The "late/current" high speed GMLAN traffic will have some ID's with letters in them ($1F5, $1E1, etc), not "numeric only" ID's.