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Welcome, I'm Chris (aka Moose) I prefer to work when others don't, I am here around lunch and after dinner till after midnight.working after noon till just after midnight.
Here is the wire diagram on this circuit.
The fuel level indicator signal goes to the ECM first then the ECM sends the signal to the instrument cluster. Do you have a diagnostic tool to see if the ECM is showing the correct fuel level? Can you OHM test the wires from the ECM to the fuel sender to verify those wires are not broken then do the same again for the wires from the ECM to the instrument cluster?
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Hello again Chris here,
I am only permitted as a user of the website like yourself to help diagnose and repair one concern or system per question. Are you needing more assistance on the fuel sender?
I can help on a new concern through additional service offer if you would like.