Turn on your ignition, no need to start it.
Place your head near the space between the Cab & Bed.
You should be able to hear the fuel pump.
If you hear the pump, there should be a way to disconnect the fuel line, under the hood ??
If you have to change out the fuel pump, you can drop the tank, or if you have help, lift the bed onto some wood blocks, which is the way that Shops would do it.
There are YouTube videos using both methods
you will need a FUEL LINE Tool, using either method
You can get them at auto parts stores or Hardware Stores, even Harbor Freight