2002 Buick Century

[Gatores]

My daughter just bought a used car and the gas guage doesnt work. It bounces from full to empty no matter how much in the tank. Any ideas how to get a gas guage working.

Thanks

Rick

[fishhuntwork]

replace the fuel sending unit which is attached to the fuel pump

[jeffreyd]

In the fuel tank, job to do when the tank is near empty

[Jeremy airjer W]

I have a variable resistor from radio shack that I use to test the guage. With the sending unit unplugged I can hook up the resistor and watch the gauge go up and down with the different resistance values.

More than likely it is the sending unit. I think they are serviceable (you can replace just the sending unit) but depending on the mileage it may not be a bad idea to replace the fuel pump module and the fuel filter for good measure?