Transit fuel gauge showing full all the time - 2002 Chevrolet Malibu

Fuel sender unit could be faulty and showing a full tank all the time. Basically the gauge is a volt meter and the float arm adjusts the voltage going to the fuel gauge when it moves up and down. If it's stuck for some reason it'll show full when it's at the top.

A local garage or auto centre can fix this easily or if you're good with spanners, it's usually located under the rear passenger seat where you can find the access to the top of the tank.

sounds like you may have a bad fuel level sender problem. as for the check engine light coming on and storing a fault code that is a separate issue.

fuel gauge sensor in the fuel tank is faulty.
replace that.

there is two things : fuel gauge and dash fuel gauge. The fuel gauge in tank rated to 0 to 90ohms.disconnect wire at the tank take a variable resistor connect it to wire .read the dash gauge if it move as you move the resistor. if ok fuel tank gauge is at fault

Either the circuit is shorted to ground, or shorted to power.
The sending unit in the tank provides ground to the gauge.
I would disconnect the harness at the tank and see what the gauge does. You may need a new sending unit.

this problem is caused by a defective fual gauge sending unit inside the gas tank.

Remove the sender wire from the fuel tank and short it to ground (metal part of tank).

If the fuel gauge goes to full then your sender unit is faulty and replace it.If not ,please come back to me .

Please leave positive feedback if you feel I have helped you.

Thank you

Change the fuel gage sender unit in tank.its faulty.

fuse needs changed

I had the same problem. My battery was going bad. When I replaced it with a new one, the fuel gauge worked fine.