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Check the fuel pump/relay. Remove the fuel pump relay, then turn it over for a few seconds to release the fuel pressure. Then if you can remove the fuel hose going to the fuel rail. Put it into a can, replace the relay, turn it over for 10 seconds or so, Should get a nice strong stream of gas if no gas, bad pump, if bad flow or poor pressure bad pump or blocked filter, more troubleshooting of the pump will need to be done.
Not pumping fuel. There is either a blown fuse, a bad relay empty gas tank, bad electrical connection, bad ground or a bad fuel pump. For a bad electrical connect, take apart any connection related to the problem and if bad, remove connector and hard wire it.
If you run a fuel pump without fuel, the life expectancy of the pump goes way down. Since you think that the pump is bad and you've gone to the trouble of removing the pump, change it out, especially if if there is a lot of miles on your truck.
Disconnect the pressure transducer connector on the top rear comer of the fuel tank.
Clean the area around the fuel pump mounting flange.
Remove the bolts and remove the fuel pump.
CAUTION The fuel pump must be handled carefully to avoid damage to the float arm and the filter.
Remove and discard the fuel pump mounting gasket. To Install:
Clean the fuel pump mounting flange and the fuel tank mounting surface.
Install the fuel pump mounting gasket on the mounting flange.
Position the fuel pump in the fuel tank.
NOTE: Tighten fuel pump bolts in a star pattern.
Install the bolts. Tighten to 10 Nm (89 in. lbs.).
First have as little fuel in there as possible, half a tank will be heavy, 1/4 tank is manageable. You can buy pumps at the auto parts store.
Disconnect the battery, open the filler cap. Remove the filler hose and vent tubePut a jack with a section of 2x4 under the fuel tank. Undo the strap bolts, then lower the tank enough so you can disconnect the fuel lines and electrical connectors.
Once tank is removed you will need a flat blade screwdriver or chisel and a hammer to remove the ring holding the fuel pump.
Remove the fuel pump then do the reverse to install (you may have to splice in a new connector).
Then either the fuel pump has failed, fuel filter is clogged, fuel pump relay is bad, or the fuel pump fuse is blown. Sit in the car in a very quite area or with someone listening at the fuel fill area with the cap removed and turn on the ignition without starting the engine. The fuel pump should come on for a few seconds and then shut down. If it does not then check the fuse and the relay. If it comes on then you know the fuse and relay are good. Replace the fuel filter. If that does not help more than likely the fuel pump is bad and needs replacing. The pump can run and still not be pumping any fuel. A fuel pressure test will verify if the pump is for sure bad. You have an 11 year old vehicle so it would not be uncommon for the pump to go bad especially if the filter has been neglected. A partially clogged fuel filter will destroy an otherwise good fuel pump. You will have to remove the fuel tank in order to replace the fuel pump. Use a hand pump to remove as much fuel as possible from the tank as gasoline weighs around 8 lbs per gallon. The less weight the better. Good luck and Merry Christmas.
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