Certainly could be a pump but, you can't ignore the Automatic Shutdown System. If you also are not getting spark I would look in that direction.
Here's the pump change procedure:
http://www.autozone.com/servlet/UiBr...3d801a431d.jsp More info in the right column. I've never changed one but there's plenty who have all over the forum.
The manuals are a toss up. I've had both and both are lacking to some degree. Another alternative is Allpar.com. They have a subsciption service that looks tempting. There's always the factory manuals for $$$$. The Autozone site is good for common repairs but, doesn't cover everything.
Are you getting a "Service Engine Soon Light" or fault codes with the key trick or scanner? Did you try the "beat on the fuel tank" trick? The pump is in the tank.