Whirring noise from rear of truck, fuel pump?

Tiny
R FAMILY
  • MEMBER
  • 2005 CHEVROLET SILVERADO
  • V8
  • 4WD
  • AUTOMATIC
  • 110 MILES
Whirring noise from rear of truck when truck is moving or not, fuel gauge not working right. Could it be fuel pump or fuel sending unit?
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Friday, February 5th, 2010 AT 7:42 AM

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Tiny
SQM
  • EXPERT
Hello,

If the fuel gauge is not working correctly it is due to a faulty fuel level sending unit.
The fuel level sending unit consists of a float and a resistor. The float moves up or down with the fuel level and contacts at different part of the resistor, the resistor send that info to the gauge for you to see the level.

In order to replace the level sensor you will have to remove the fuel tank, as the level sensor is a part of the fuel pump assembly.

https://www.2carpros.com/articles/how-to-replace-an-electric-fuel-pump

I have attached diagrams for your reference.

Please let me know of any questions.
Thank you.
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Thursday, September 23rd, 2021 AT 3:13 PM

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