Fuel Pump Wiring Harness Adapter Problems

[houstontaylor]

I have a 2003 Chevy Tahoe with about 360,000 miles. A few years back I had a dealer replace the fuel pump as a precaution because I was traveling long distances and it had high mileage. They also installed the standard wiring harness adapter for the newer pump style. On a long trip soon after that the car shut down on the highway and the problem turned out to be a short in the wiring harness adapter which caught fire and shorted out the pump. The dealer in the town near where it broke down installed a new pump and wiring harness adapter. At some point after that the fuel guage began to give suspect readings and has worsened so that it often gives an empty or full readings when the fuel level is known to be not near those levels at all. The fuel pump, instrument cluster, and ECM have been replaced since the sending unit wiring runs through the computer. Since the problems have been occurring more frequently now, I was able the disconnect the pump sending unit wiring harness under the fuse box and the resistance in the rear half of the circuit to the tank showed open circuit when the fuel guage showed empty. I suspect another bad fuel tank wiring harness adapter splice but haven't taken it to a shop yet to have that redone and see if that solves the problem. Before I go to that expense I would like to ask if anyone else has seen problems with fuel pump wiring harness adapter or if there could be another reason for this problem. Thanks.