I went to unlock my truck this evening using my remote keyless entry, and the front driver's side door wouldn't unlock. I then tried the key and it wouldn't unlock either. I had this problem before, about three months after I bought the truck and I took it in to the dealer. Of course it was under warranty, and that was a long time ago, so I can't remember exactly what the problem was. The door will open from the inside, so I'm not locked out, but it's a pain in the rear. Anyone have any ideas?