Fuel flowing during filter change

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east302

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According to the diagram, it grounds at G404 and nothing else shares it. This is the only thing I found showing the ground, but it has to have a lead from the pump.

867040cfe52523350e440dee51d4c8ad.gif

Disconnect the ground from the frame, put a multimeter probe on the disconnected wire and put the other probe to the frame. If you have 12V with ignition off, then the pump is constantly energized.


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My99Yukon

My99Yukon

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Thank you East302. Great feedback. I will check that out as soon as I can get my hands on a multimeter...hopefully tomorrow. Input like this from members like you is what makes this forum so special. It is also why I contribute what I know, have learned the hard way and don't know.

Much appreciated.
 

HiHoeSilver

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I'm curious about this simply from an electrical standpoint. I so wish I had a shot of my OBS dash, but I think I remember exactly what you're describing. I remember thinking it was weird that my NBS all zeroed out with key on, engine off. Going by my not so great memory, I'd say your experience is normal.
 

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