Okay guys and gals. I've searched high and low and have not come across anywhere that I can find that someone has had this same issue. A few days ago I had to help my brother jump off his car because his alternator was bad and it was dead. So, jumped it off no big deal. Later that night I head to work and notice the clock time is wrong, so I fixed it and it was fine. When leaving work the next day I see the clock isn't maintaining time, so I fix it again but it only maintains the time I put into it last no matter if the truck is turned off and back on too. Shortly after that, I can't get my navigation map to pull up, so I tried to eject the DVD out of the system and it won't, so I'm guessing a lose of power. I checked all the fuses and none of them are blown. I am at a lose right now. Any ideas? I would hate to take this thing to a mechanic or worse, the dealership.