Open curcuit guage will read full. grounded curcuit it will read empty. if wire to sending unit at the tank is broken or corroded. good-day!
SOURCE: Fuel gauge in 2001 Aztek 140k miles doesn't work.
Hi, Sounds like it has a bad fuel gauge sender, location is in the fuel tank.
SOURCE: Buick Regal dying
You have a problem in the fuel pump relay circuit for sure then. I'm betting the relay, but it could be that dropping resistor.
SOURCE: 2002 Chevy Suburban: Fuel gauge reads empty, tank is half full
Youre gauge is controlled by a plunger in the fuel tank which is attached to the sensor and the fuel gauge. it sounds like when the plunger goes down half way its either getting stuck down lower then it should. Needs replacing. Any mechanic can do this install for you.
SOURCE: 2000 buick century custom. fuel gauge fluctuates
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 .
SOURCE: 2002 monte carlo fuel gauge doesnt work,pump works ok.
It is likely the fuel level sending unit. I had a customer with an 03 Monte Carlo that the pump went out and the fuel gauge hadn't worked in about a year. We replaced the fuel pump module and it took care of both problems. I believe the sending unit is available separately from the complete module.
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