Either the sender wire is bad, or the sender inside the fuel tank is bad.
Here is how to test it. Ground the wire that runs from the tank. This should pin the gauge all the way to full. If this happens, it is the sending unit. No gauge movement means bad gauge. Remember to turn on the key while testing.
Because it's stuffed
in the fuel tank
Chevy's are known for this problem, i just recently had the same problem and what you need to do is replace the fuel sending unit. My original problem had to do with my fuel pump not working and i wasn't really worried about the gauge but we figured since we had the tank down we might as well swap the sending unit and my gauge starting working. Good luck
check ground first
I have a 1999 s-10 my fuel gauge quit working I had to replace my fuel pump that fixed my proplem
have you checked the fuel gauge itself to make sure it is working
It's not fused separately. If your fuel gauge isn't working, you either have faulty wiring to the gauge, or a faulty fuel sending unit.
Most of the time, the fuel gauge is not the problem. The problem rests with the sending unit in the fuel tank. To fix it, you must replace the sending unit. This is done in different ways depending on the position of the tank in your particular truck.
If your Chevy Cavalier's fuel gauge is not working, it could be due to a faulty fuel level sensor, a broken wiring connection, or a malfunctioning gauge itself. Start by checking the fuse related to the fuel system, as a blown fuse could cause the gauge to stop functioning. If the fuse is intact, inspect the wiring and connections at the fuel tank and gauge. If these components appear to be in good condition, the gauge or the fuel level sender may need replacement.
My fuel gauge, odometer and radiator gauge isn't working and my radio says locked. How can I fix this?
fuel gauge not working
buy an aftermarket harness at LMC truck and connect it to the outside of the fuel sending unit and into the dash fuel gauge. make sure your fuel pump has good ground. 16.95us last I checked.