Based on your responses I crawled under the truck again. The first thing I felt was the fuel pump. It is near the front of the tank and has several tubes and wires going to it. It was bone dry.

As I moved my hand to the rear of the tank I found a round raised thing about 3" to 4" in diameter. I can not see it but it feels like the photo the VincentVega posted. Do you know what this is? It is covered with gas and there is a puddle of gas just below it by the side of the tank. Can you tell me what this is, and if I can replace it without dropping the tank.

Tahnks for all the suggestions.

Raul