The EFILive software and firmware has been modified to work with the AEM OBDII interface. It's being tested now and it should be available in the next beta update which is due out next week.
The initial release will require the AEM to be selected as the "TCM" controller so you won't be able to log ECM, TCM and AEM simultaneously, you'll only be able to do ECM+AEM for now.

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The AEM shows up as GPM (Glow Plug Module) because it defaults to CAN ID $7E6 which is the glow plug module in the GM-LAN configuration.

Regards
Paul