I have been reading up on the BDM (Background Debug Mode) which is available on the M68332. Most all who sell the interface mention that it can be used to read write to on-board flash devices (as well as an infinite number of other cool things).
Now I wouldnt imagine that GM has any of the pins on the OBDII connector go to the CPU for the use of BDM BUT. If this works its an option for flashing the memory.
There are many hurdles with BDM. The first is that you have to tell the CPU you want to start it. This is the main problem (after connecting the interface of course). There usually is a way to do this through hardware but who knows if GM implamented this or not. There are other ways (Im looking into them now).
I am going to buy an interface and a debugger to use with it and start playing as soon as I get confirmation it is possible to do on our chips.
Anyone out there have any exp. with BDM on the 68xxx(CPU32 core)? Any help/info would be great and m ight just get this board rolling ;D