2019 Yukon XL Denali - Fuel Guage Fluctuating

[usafdenalidrw]

Hi everyone,

We have a 2019 Yukon XL Denali, with roughly 52k miles on it.

Recently, the fuel guage when Full would only read about 7/8 full.

Then as we used fuel, it would start to fluctuate and become erratic.

Anyone have any idea if maybe the circuit just needs a reset or something?

Any help is appreciated!


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[usafdenalidrw]

Bump for help..

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[DenaliBQ]

sounds like the sending unit could be bad or possible fuel pump failure. Try throwing a bottle or two of the techron complete fuel system cleaners in see if that helps

 

[Bob2C]

Try this stuff as well. It’s potent and Walmart sells it




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[usafdenalidrw]

Thank you! Gonna give it a try

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