No you were right in that you can not flash the base BCM data with EFI Live but it can be modified with EFI live. I am going to get the BCM from BT Diesel who can do both.
Thanks, I just know you can flash modifications to the BCM with EFI live. Just want to know if I still need to flash with Tech II first. Here is the link from EFI live:
http://www.efilive.com/latest/bcm-flashing/
New to this forum;
I have a 2011 SIERRA 3500 and it already is built and EFI tuned. I believe my BCM has packed it in and so bought a new one from the stealership....mistake. I have it thought and I believe I will require a flash for it. I believe this can be done through EFI live but...