[s_c5519]

I had a smililar situation and it ended up being a dead cell in the battery or something... You can narrow yours down to the battery too since the last thing you did was listen to the stereo for that long...

I was just installing a USA Spec Ipod adapter in my Escalade the other day and it killed the battery in about 15 minutes! I had the radio on at the time (on position) and the truck is brand new with 200 miles on it. I jumped it and it has been fine since, but I don't think yours is a comin back...