We picked up a new Tahoe last week. The Nav disc was missing and the dealer came back with one labeled version 1 and 2005. I told him I was certain there was a newer one available and he pulled a version 2 disc allegedly out of another new Tahoe on the lot. Can anyone else with a recent purchase of a new 2007 verify the version of your nav disc. 5-6 months ago I recieved version 3 for my 2006 Corvette but I believe the Nav systems are different and just wanted to be sure we recieved the correct disc.