absolutely... gas breaks down over time hell I wouldnt run untreated gas that was a year old in my lawn mower... your filter definitely needs to be changed... less than $10 the "sock" over you fuel pickup in you tank is probably caked with sediment too...could a fuel filter be fouled, by sitting for over a decade?
Dont I have to drop the tank to check the fuel filter?there should be 3 fuel filters on yours... One in the tank called a "sock" filter, one inline usually on the rail, and one small screen filter where the fuel line bolts to the carburetor.
If the truck was COMPLETELY empty when parked then your sock filter may be ok, but if there was any 10 year old gas in there then you're gonna have to drop the tank and replace that sock filter at least.
Have you checked your fuel pump yet? You need to do this as well... The feed line for your pump can be run into a can of gas, turn the truck over a whole bunch and see if it pumps...