I doubt you will get a reply from the original poster since according to his profile he was last active 12/15/13.........
Just my .02 but if you have the tools,time and money you can make custom brackets and get them to work but since the AV is based on the Suburban frame and not a pickup frame the mounting brackets and locations would be different. Also Silverados didn't have lower cladding so there may be clearance issues. (the custom brackets could work around that issue though.)