problems connecting help

[87gmc]

I purchased a new 2006 duramax and i cant seem to scan or read the tune off of it. It seems like efilive is not connecting to the pcm. Any suggestions?

[lakingslayer]

EFI will not work with the '06 computers (LLY and LBZ) and from what they've said they will not support it. GM went to a Bosch computer system in '06 which is quite different than the Delphi system that was used before.