Question about Chevrolet Silverado 1500

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I recently asked about a fuel gauge that is reading full all the time on a silverado 1500 5.7L tbi. when i disconnect the fuel pump harness, the gauge goes further past full. i noticed the ground from the sender unit which is bolted to the frame is really really rusty. would this not allow my fuel gauge to go down and or ready accurately?

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  • Anonymous Mar 16, 2014

    fuel gauge not accurate after changing fuel pump 2004 jetta

  • Anonymous Mar 16, 2014

    fuel gauge not accurate

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Absolutely, your gauge works off of resistance that is calibrated, if you have a rusty or bad ground you are causing more resistance, hence a full reading. Disconnecting it puts it to its default setting which is full, All the resistance in the unclean ground is tricking your sender in to thinking tank is full...

Posted on Sep 12, 2009

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Ive repaired many of these .run your tank down near empty .jack up the truck ,remove tank straps and fuel hoses . remove tank and remove the ring on top of tank pull out sending unit ,plastic float connected to the pickup and vent pipes all 1 unit and just replace it .plug n the new sending unit and pipes use the new o ring provided .dont bother trying to fix the old stuff just change it and have peice of mind its a cheap part.the work, is removing the tank if you dont have a shop and tools ,zip cut, deep sockets ,hammer and a dull chisle . good luck. often 1 of the bolts on the straps breaks i often drill t add a new bolt and use it anyways .

Posted on Feb 08, 2014

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Posted on Jan 02, 2017

  • 1118 Answers

SOURCE: i recently asked about a fuel gauge that is

Most likely its the ground wire clean it up or replace it, and i bet the guage will read corectly.

Posted on Sep 12, 2009

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