Just keep pulling fuses one at a time and then try starting until you find the one that wont let it start. But make sure you put each fuse you pull back in after you try starting the engine otherwise you will get the fuses mixed up. Do you have a book in your glove box on your pickup? And generally there is a diagram on the fuse panel that tells you what is what. You can either pull the fuel pump fuse or relay or ECM although your vehicle will have to relearn all the settings of your engine if you pull the ECM fuse. It would be easier to install a manual shut off switch then keep doing all of this all the time. lol
Pull The Fuel Pump Fuse
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