Fuel Problem on 2001 Tahoe

gas gauge is off by a 1/4 tank keep it full and no problem

Either the fuel tank sender in the tank is bad and needs replacement, or the fuel gauge is faulty. I would bet the one in the tank is probably bad, because that's usually the case. Find the connection at the fuel tank, disconnect it and use a VOM to get a resistance reading while the tank is empty and reading 1/2. It should match the specs.

run the fault codes and look for a venting problem in the EVAP system

Check your fuel pressure it should be 60-66 psi because it sounds like you might have a bad pump.

I have seen this type of problem before, this sounds like the engine is not getting the correct amount of fuel pressure it needs as you accel.the first thing is to remove the fuel filter and replace it, take the old filter and blow into it, this will tell you if its restricked. the next step will be to check fuel pressure, you will need a gauge for this test, hook up gauge at valve on the injector rail, take caution wear safty glasses as fuel is under pressure and will spary out a little as you connect line for the gauge to fuel injector rail valve, you will run the engine and also step on gas pedal as you watch the pressure, i would rev the engine to around 3000rpms and hold it to see if engine tries to stall or buck when it begins to act up look at the gauge and if the pressure drops as it starts to act up then the fuelpump is bad. its not able to keep up the pressure. start there good day.

fuel filter should be in gas line comming from the tank.
will be close to tank on either drivers side or passenger side.in front of back wheels.

If the gauge is incorrect,then it is running out of fuel,or there is a contaminate in the fuel,use a additive called Heet,two bottles of it,and a additive called Lucas,the.And add fuel.

It may also be water in the gas. Gas after a while will go bad. and the tank also condensates. You may want to try some HEET or some gas additive that reduces the water in the gas. And it maybe the pump pickup is bent wrong or something and is actually starting to come out of the gas. Remember the gas gauge is only an indicator. I doesn't accurately tell you how much gas you actually have. I have ran out of gas a couple of times because it trusted the guage, only to find out that my sensor in the tank was on consistant from one tank to another.


I hope this helps

The sending unit in your tank is going bad replace it.

check fuel filter could be blocked,if it s ok check fuel pressure if its low ,fuel pump