If if anyone interested in a copy of the 2009 GM NAV DISC # 25956245 just send me a PM.
You can check to see which disk you need for your truck at gmnavdisc.com/buy-a-disc.asp?lang=en

Please be advised I am not trying to encourage you to not purchase the original disc, however at $200.00 for the original I would recommend using a copy so the original does not get damaged