Should have my Nelson tune monday, so I no longer need this. Its a Predator U7194 it comes with everything needed including the hook up for your computer for updates and it works on

06-09 Corvette C6 including Z06
07-09 Tahoe (NNBS)
07-09 Suburban (NNBS)
07-09 GMC Yukon (NNBS)
07-09 Cadillac Escalade (New Body Style)
07-09 Avalanche (NNBS)
07-09 Silverado (NNBS)
07-09 GMC Sierra (NNBS)
08-09 H2

I dont remember which update I have in it right now but I belive it is the 8r07. there has been a few updates since that one I just havnt updated it in a while. the updates are free off Diablosport.com $250.00 takes it.