My 2004 w/NAV came in yesterday, but when I asked if it was true that you need to be driving under 8 mph in order to control the NAV and there is no chance of hooking up a multi CD Changer, I told them to sell it! I ordered 1 without NAV and I will install an aftermarket system. Too bad the big wigs at GM aren't smart enough to realize that people who are willing to spend close to $60,000.00 on a car might also want a simple luxury as a multi-cd changer
