My '03 F-350 died yesterday from apparent lack of voltage. Two big ass batteries that are only 3 months old could only carry the truck so long. So I am wondering if anybody has seen similar problems? Yesterday was in the mid 90's and I had just climbed a pretty big hill and then had to back up a few hundred feet; wonder if all this combined was too much heat on a weak link? It's at the dealer now (I just got it 3 weeks ago and have a 90 day warranty) so hopefully they will get it straightened out today and I will be back in my truck tomorrow.