My truck failed to start this after noon. I have replaced the fuel relay and I checked to see if the fuel pump was getting power and the pump has no power. Does the tahoe have another fuse or relay for the fuel system? or is my fuel pump just bad. Fuel filter is new.
I am having the same problem with my 96 pickup i am getting low voltage to my fuel pump i have traced the wires back to the front the purpel wire is the one with low voltage i replaced fuel pump also fuel relay and still have low voltage
Check for voltage at the pump. If it has 12v there, (and a good ground) then pump is bad. there may be a pump fuse on the fuse block (can't remember) but if you find it has blown, the pump may be getting ready to fail. If fuse fixes the problem, replace it and carry an extra with you, then change the pump.
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I followed the electrical lines toward the fuel pump( two black and a purple and a gray wire) and checked them at that point and I have no power I also opened the box where the fuel relay is located and only found power going in too one of the terminals the rest are dead. I replaced the relay already and still nothing.
I followed the electrical lines toward the fuel pump( two black and a purple and a gray wire) and checked them at that point and I have no power I also opened the box where the fuel relay is located and only found power going in too one of the terminals the rest are dead. I replaced the relay already and still nothing.
Where are those fuses located? I have some on my drivers side door panel. And I have some under the hood where my fuel relay was located. Is there another fuse box elsewhere? You also stated to change out my fuel pump?
I've checked the both fuse boxs and everthing is fine. I'll check again to make sure. Which wires are the ones to the fuel pump. I found one purple one gray and a black w/white line and the black ground which is attached to the frame.
THE FUSES ARE UNDER THE HOOD FOR THE PUMP I THINK, HAVE NO WIRING DIAGRAMS, YOUR OWNERS MANUAL WILL SHOW FUSES, GET A TEST LIGHT AND CHECK THEM ALL, CHECK INSIDE AS WELL, UNTIL YOU FIX THE POWER TO THE PUMP DON'T BOTHER CHANGING IT. THERE ARE ONLY 2 BOXES.
often the fuel pump will short out and blow the fuel pump power fuse, check the fuses under the hood, I think it may be marked ECM 1 and ECM 2, if they are blown replace the pump and the fuse.
U went to the connector on the top of the fuel tank and verified the pump has no power?
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