04 Yukon Fuel Pump needs replacing?

[_Spanish_]

So my 04 Yukon SLT has been doing this since i bought it a couple months ago, i fill it up and it works well all the way untill the image provided ( just under 1/4 fuel on the gauge and about 100 km range left)

The problem is that once i hit about 70 km in range it'll die, its happened twice to me and once yesterday to my gf. Usually we have 5g gas in the back and it'll turn right on after cycling the key a couple times so im guessing it is really empty but range still shows 60 something or 70 something km left and needle isnt in red yet...

Wondering if changing the fuel pump will fix this? It's not the end of the world but i could spend a few hundred to get a new pump put in at this moment so if y'all say yes ill do it thank you!

 

[Gtir007]

it might be empty, either the float on the pump is inaccurate or the the motor in the gauge is no good, i would do the gauge first

 

[SLCHOE]

You need to replace the fuel sending unit. It's out of spec.

 

[_Spanish_]

it might be empty, either the float on the pump is inaccurate or the the motor in the gauge is no good, i would do the gauge first

My speedometer gague motor is bad i know that cos it freezes sometimes and it could be the same thing with the gas gauge but whenever i turn the truck off the gas gauge needle always goes to 0 so it's not freezing but ill try it ill do both at the same time thanks!

 

[_Spanish_]

You need to replace the fuel sending unit. It's out of spec.

The sending unit comes with the fuel pump right? So i would have to change the whole pump if im not mistaken?

 

[jesse53]

The sending unit comes with the fuel pump right? So i would have to change the whole pump if im not mistaken?

Yeah, all one unit, just did this job.

 

[SLCHOE]

Yes.

 

[01ssreda4]

If you know someone with hptuners they can adjust the output of the gauge in the tune to match the actual fuel amount in the truck. I had to do this when i replaced my fuel pump with an ac delco unit and suddenly my fuel gauge was inaccurate, leading me to run out of gas. Why? I dont know but I was able to fix it in the PCM.