Navigation DVD: http://gmnavdisc.navigation.com/product/Catalog/Catalog_Chevrolet_Corvette_2006/GM-North-America-Map-Update-v.2013-zid22944166/en_US/GMNA/USD

GM - North America Map Update V.2013 (Part #22944166) - $179.99

2005 version 1.0 p/n 10381886 one dvd.
2006 version 2.0 p/n 15779679 one dvd.
2007 version 3.0 p/n 15932106 one dvd.
2008 version 4.0 p/n 25852830 two dvd's.
2009 version 5.0 p/n 25976806 two dvd's.
2010 version 6.0 p/n 20861474 two dvd’s.
2011 version 7.0 p/n 20980238 two dvd's.
2012 version 8.0 p/n 22820294 one dvd.
2013 version 9.0 p/n 22944166 one dvd.