2001 Buick Century fuel gauge

There's been a lot of problems with fuel tank gauge floats and sensors go t junk yard an attempt to remove see if you up to it if not better leave this one to a pro

Did you get that code? Their are a lot of things that could be causing your problem ( witch you didn't say) fuel filter fuel pressure valve o injector rail, vacuum leak, gas cap gasket..... Make sure

Remove the back seat

Remove the cover

Replace tank sensor

Rock Auto.Com

Wells 5S2066 $33.79 if you do yourself (easy job)

If you mean the fuel level sender for the gauge it is part of the fuel pump module inside of the fuel tank. If you mean the fuel tank pressure sensor for the EVAP emission system it is located on top of the fuel pump module on the outside/top of the tank. If you have an erratic fuel gauge then the sender is most likely at fault. Some are serviced seperately but some are sold only as part of the pump. If you have to remove the tank and pump to replace the sender and have close to 100k on the odometer then I would STRONGLY suggest replacing the fuel pump at that time.

I had that problem when was the last time you replaced your battery?How old is it?

i dont know the specifics of a Regal, but usually, when a needle fluctuates too much, is because the float gauge in the gas tank is worn out, or its mount became loose. You cant see that effect on a full tank because the instrument needle and the float are pegged against the stop.

The sender unit has a fine resistance wire with a slider to read the level, the slider or wires are worn and making intermittent contact, the low fuel light is a seperate switch so it will still work.access to the sender is usually under the rear seat cushon, under the soundproofing and a cover, have a look and describe what you have .

I had a Malibu do that. The problem was the float (or whatever its called these days) in the tank.

Gm cars are common for having defective fuel tank sending units in the tank. Yours likely needs replaced.