not exactly EFILive related but here is the info (if anyone is interested) as to how to have the GM programming available for your vehicle to do things like activate the back up camera, (if it was not originally equipped).
As someone mentioned in this thread, you basically call ACDelcoTDS and ask for authorization. They put you on hold and they talk to GM. Then even though the backup camera was not purchased as part of an official GM accessories package they still make the HMI module reporgamming available. The AC Delco guy on the phone said it would cost an additional $50 (as well as the SPS subscription). The SPS programming was quick and easy. I selected the HMI programming and it flashed the HMI in about 5 seconds. So apparently they authorized my account to have that programming. Otherwise it would not work as I tried to do this last week and it only recognized that my HMI was up-to-date and it would not program it.
Karl Ellwein