I installed a 2003 navigation system in my 2006 vibe. I really like it. I called to dealership to get a dvd map update. They said it was no longer handled at he dealership level and had to go to a GM NAV toll free number. No problem, I called and they said they had no information at all for the vibe navigation system. Hard to beleave since they still sell one. Any way, you can find out all you want if you look at toyota/lexas navigation systems. Toyota does offer a 2005 update for $250.00