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2007 Suburban 2500 4wd Fuel System Issues

JLeosnow

By JLeosnow
in Ask A GM Technician

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JLeosnow Enthusiast

JLeosnow

Posted
Posted

Has anyone heard of any known issues with the vehicle prematurely shutting down/acting like it is out of fuel when the gauge on the dash clearly shows a 1/4 tank of fuel left? It has happened twice on our trip out west and luckily we carry fuel in our trailer. The weird thing is is that when I pour the 6 gallons in from the container it brings the gauge up to a 1/2 tank and the truck starts right up again... Very uneasy feeling not being able to use much more than a 1/2 of our tank when only getting 5.9 miles to the gallon towing into the strong Dakota winds in the middle of the night!

 

Any help/others experiences would be much appreciated!

 

-John

pwall Senior Enthusiast

pwall

Posted
Posted

Sounds like the fuel gauge is not working correctly, especially if adding 6 gallons makes it go from 1/4 to 1/2.

When the gauge says 1/4, how many gallons does it take to fill the tank ?

JLeosnow Enthusiast

JLeosnow

Posted
  • Author
Posted
Sounds like the fuel gauge is not working correctly, especially if adding 6 gallons makes it go from 1/4 to 1/2.

When the gauge says 1/4, how many gallons does it take to fill the tank ?

30 or so gallons. I believe the gauge is reading correctly.. What I am seeing is that something is telling the truck's fuel pump to cut out/shut down prematurely....

 

Thanks,

-John

pwall Senior Enthusiast

pwall

Posted
Posted

My '02 YukonXL had a 118litre tank, which is 31 gallons. I would think your '01 is probably a similar size, which would mean that when the gauge shows 1/4 and it'll take 30 or so gallons, it's really empty.

As an example (although not the same), in my '00 Buick LeSabre, as soon as the fuel gauge hits 1/4 tank, the fuel gauge will start moving all over the place and then you have no idea how much fuel you have. So I reset the trip at each fill and use that as a guide (I replace the sending unit but well....reseting the trip is working for me).

gmtech4 Senior Enthusiast

gmtech4

Posted
Posted

you need to get it diag'd then for your concern ,,,,

 

take it in ,your tank MAY be damaged also ...

 

scanner to actual gauge tank level is ????

 

codes??

 

let us know

JLeosnow Enthusiast

JLeosnow

Posted
  • Author
Posted
My '02 YukonXL had a 118litre tank, which is 31 gallons. I would think your '01 is probably a similar size, which would mean that when the gauge shows 1/4 and it'll take 30 or so gallons, it's really empty.

As an example (although not the same), in my '00 Buick LeSabre, as soon as the fuel gauge hits 1/4 tank, the fuel gauge will start moving all over the place and then you have no idea how much fuel you have. So I reset the trip at each fill and use that as a guide (I replace the sending unit but well....reseting the trip is working for me).

pwall,

this is on our 2007 Suburban 2500 which has a 39 galloon tank.

 

Thanks,

-John

JLeosnow Enthusiast

JLeosnow

Posted
  • Author
Posted
you need to get it diag'd then for your concern ,,,,

 

take it in ,your tank MAY be damaged also ...

 

scanner to actual gauge tank level is ????

 

codes??

 

let us know

 

govtech4,

Thanks for the input. I do not belive the tank is damaged but I guess anything is possible. The vehicle has displayed no codes when this condition has happened(4 times on this 1 trip).

 

Thanks,

-John

txab Senior Enthusiast

txab

Posted
Posted
you need to get it diag'd then for your concern ,,,,

 

take it in ,your tank MAY be damaged also ...

 

scanner to actual gauge tank level is ????

 

codes??

 

let us know

+1

 

This is the action to take.

JLeosnow Enthusiast

JLeosnow

Posted
  • Author
Posted
you need to get it diag'd then for your concern

 

take it in ,your tank MAY be damaged also ...

 

scanner to actual gauge tank level is ????

 

codes??

 

let us know

+1

 

This is the action to take.

 

 

We do plan to bring it in for diagnosis at the dealer but have to get home from out trip 1st. We are on the mountain until Sat. then have to drive the 1000 miles home.

 

Was just looking to see if this happened to be a common issue on this year/model and if there might be a quick fix. If it were a know problem with a know solution we could have planned to stop at a dealership on our way home for the repair....

 

Thanks,

-John

JLeosnow Enthusiast

JLeosnow

Posted
  • Author
Posted
you need to get it diag'd then for your concern ,,,,

 

take it in ,your tank MAY be damaged also ...

 

scanner to actual gauge tank level is ???

 

codes??

 

let us know

govtech4,

I'm assuming that the dealer performs the "scanner to actual tank level test" with some sort of diagnostic computer or is this something I can do/see in the on-board control panel in the dash?

 

Thanks,

-John

gmtech4 Senior Enthusiast

gmtech4

Posted
Posted

yes the dealer uses their scanner to see the data of your truck ,no you can;t do it unless you have $$$$

 

good luck

 

Rob

pwall Senior Enthusiast

pwall

Posted
Posted
My '02 YukonXL had a 118litre tank, which is 31 gallons. I would think your '01 is probably a similar size, which would mean that when the gauge shows 1/4 and it'll take 30 or so gallons, it's really empty.

As an example (although not the same), in my '00 Buick LeSabre, as soon as the fuel gauge hits 1/4 tank, the fuel gauge will start moving all over the place and then you have no idea how much fuel you have. So I reset the trip at each fill and use that as a guide (I replace the sending unit but well....reseting the trip is working for me).

pwall,

this is on our 2007 Suburban 2500 which has a 39 galloon tank.

 

Thanks,

-John

 

Ah...sry, thought it was for your '01 Suburban. See it in the title now. ;)

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