I know the LBZ and LMM ECM's are slightly different and you cant exchange operating systems....but what about the van ECM's?

Are the 06-07 van ECM's the same as the 06-07 LBZ ECM's? If I buy an 06-07 van ECM can I reflash it with a pickup truck OS???

I tried a search but couldnt find anything....

thanks
ben