Smack the bottom of the fuel tank with the side of your fist or with a rubber hammer while someone cranks the engine as this might jar the pump loose and temporarily let it start working again. Note that this "fix" is only temporary and the pump will fail again soon. How soon is unknown as it may work for weeks or it may only work once so if the truck starts don't shut it off till you get it moved to where you need it.
Running a vehicle with an in-tank pump low on fuel damages the pump because the pump starts sucking some air long before the tank is so empty that it can't develop enough pressure and volume to keep the engine running. The pump and pump motor are both cooled and lubricated by the fuel flowing through them so when it starts sucking air instead of a solid column of fuel the wear rate on the motor brushes, bearings, and pump rotor are greatly increased often to the point where running out of fuel once can kill the pump as you seem to have found out the hard way.
Your only long term fix is to replace the pump assembly (pump and sock) along with the fuel filter and never again drive with the fuel gauge below 1/4 tank.
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