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Originally Posted by Bravo Garage
According to the dealer.... The ECM was unplugged. When they got it running the plugs were fuel fouled. I am not a brilliant man, but If the ecm was unplugged would it have attempted to start or had anything? It had dash lights, and was attempting to start, but was not getting power to the fuel pump. Let me know what you guys think and thanks for your help.
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That sounds like a reasonable diagnosis, but how did it get unplugged?.
(It's on the fender well, pasenger side, behind the battery, and should have a positively latching connector, such that it can't come unplugged without human intervention)
I'm not looking at a manual at this time, but I recall the pump runs on a 5V signal, so there's some signal coming from the ECM to the pump, the 12V to 5V converter is probably on the ECM board.
As a side comment, The Ignition switch on these trucks are quite odd; you can have power to the starter, but no power to the ignition module, tranny switches, dash lights ; hence our references to the switch by your original post.