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Re: 2004 GMC truck
Besides the FUEL FILTER , check the FUEL PUMP , have someone turn the key to engine but do not turn the engine on , get closer to the tank , fuel pump make a low sound before turning all the way the key to start engine , hope this helps AJ
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It will stall when it runs out of gas. If there is gas, the fuel system is suspect. Fuel filter and pump are in between the tank and the motor. At the motor you have fuel injectors. You can get a loaner fuel pressure gauge from an autoparts store to check your pump. If your filter is clogged, it may affect your pressure as well.
You can to the Salvage Yard for a new computer, but your going to have to get it reprogram to your ignition keys, so the Passlock will start the engine. Before you go through all of that. recheck every thing, it could be your crank sensor or your ICM faulty causing your engine to shut down. Keep me posted and let me know what DTC codes you have. Note: a faulty fuel pump or dirty fuel filter will not set a DTC code. You may have a dirty fuel filter or faulty fuel pump or faulty fuel pump wire harness or fuel pump relay.