Originally Posted by
carl0s
Thanks Ross.
The current OS is 12596734
I was trying to flash any 2006 OS that I can find, which is:
12603159 or 12604792.
Do you know whether there is in fact any difference in the High-Speed CAN / GMLAN protocol between the 2005 and 2006 E40s ?
As it turns out, someone I know locally-ish has a 2006 LS2 with an E40, so I may get to have a look first hand.
So far, I am hoping that once I start broadcasting the last 8 digits of my VIN, every second, on the CAN bus, that the ECM will think "hey.. PIM! There you are! Let's talk!", and things will start to look how I expect them to.
Right now, the CAN frames coming out of my ECM look nothing like the GMLAN specs (GMW8762) say they should, but then I have no PIM or BCM so there's nothing for the ECM to be talking GMLAN with anyway.
I have had a look at capture from a 2006 Impala SS and everything looks perfect on that vehicle! All as per the specs.