DST on Navigation/Bose unit

Does anyone have the NAV/Bose head unit in their 2004 TrailBlazer? I'm having a problem with the clock updating itself for Daylight Savings Time. I have DST on, my time zone set to EST, and the update via GPS option on. It appears that the time is being updated by the GPS system, but ever since this past Sunday when DST kicked in, the time never dropped back the hour it was suppose to. If I turn off the DST, then the time is correct. GM didn't know and neither does my dealer. They want me to bring it in now. Before I do that I was hoping there was someone out there with the same system that can check their settings for me.

Thanks!
Rich

Sorry I can't answer your question, I only have an '03, but could you tell me how you like the navigation in there? Is it worth the extra money? How well/How fast does it work??

Sorry I couldn't answer your question, but I was wondering if it is worth trading mine in on a '04. Good luck with your problem.

I think it's well worth the money. I have a GPS on my handheld PC and it takes forever to lock into the satellites. The one in the TB locks in very quickly. It only takes a few seconds to to plan the route and has auto re-route. So if you miss a turn it will re calculate a new route on the fly. There's also Points Of Interest (POI) that show you gas stations restaraunts, hospitals,etc. It'll even list them by name if you tell it too. There's just a ton of features. It even lowers the stereo and talks to you, telling you when to turn. I've only had the truck for a little over a week so I'm still playing, but so far I love it! Probally the only thing I don't like is the map software is on a DVD which you insert into the CD player. So if you're on a trip using the GPS, you can't listen to a CD.