Fuel Gauge issue on 2017 GMC Yukon XL

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4OFFSHR

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Wondering if any of you ever experience a faulty reading on your gas gauge, I have filled my truck the past couple of times and know I have topped it off and I get in and the gauge says it has 3/4 tank full. After driving for a day or so and turning the truck on and off it then goes up to just under full?
Wondering if there is any issues with the float? Or if anyone here ever has the same issue?
 

renotahoe

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Having the same issue on my '18. Need to find time to take it to the dealer. Did you get yours resolved and if so what fixed it?
 

Drone guy

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My 18 Yukon XL for the first year read past full when topped off. One year later, after filling it up the gauge went to it normal spot past full then moved to just about the full line. The dealer said it was reading correctly, but reluctantly changed the sending unit. No difference. I had it in two more times and the said "no DTC codes" and it is reading correctly. No, it changed and my 15 Yukon read the same when topped off, past full. I have now contacted GMC customer service and am waiting for them to call back, probably tomorrow.
 

wjburken

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If I recall correctly, probably 1/2 of the vehicles I have owned over the past 30+ years exhibited this. I look at the gauge as a close approximation of the fuel level and not a precise measurement so I never got to worried about it.
 

BlaineBug

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I would imagine that the digital fuel gauge would only read up to full and not above full, unlike an analog gauge which could possibly read above full.
 

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