Fuel Sender/Gas Gauge Issues

[Texcuda]

Hello all. I have a 98 Z71 that is having issues with the fuel sender. I've had the truck for a year and the gas gauge has been stuck on empty. I pulled the cluster and checked the gauge. It is fine. Today I pulled the bed and started checking things. I noticed someone had already replaced the pump and done the harness upgrade, albeit very shoddily. I took the harness apart, soldered and shrink wrapped the connections. I plugged the harness back and no joy. I then pulled the fuel pump/sender assembly. It was very clean and came out with no issues. I plugged the harness back in and manually moved the float arm. The gas gauge now moved with the float arm. I reinstalled the assembly and the gauge was back to being pegged at empty. I even pulled the actual float arm and put it in a container of gas to verify the float actually floated. Assembly out, gauge works great; assembly in, nothing. I even used a flashlight to peer into the tank with the assembly in the tank, but not pushed down to verify the arm wasn't hung up. I am stumped! Anyone encountered this before? Thanks in advance for any advice y'all have.

 

[Texcuda]

So the gauge is now working.....no clue, but I'm keeping my fingers crossed that it continues to work.

 

[Dr.Zoom]

I'd guess either the connector was oxidized and plugging and unplugging it cleaned off enough oxidation to get it working again or you have a break in the wire somewhere and moving it got it conducting again. Let's hope it was the connector.