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The gas gauge sending unit works like a reostat. A float assembly works the reostat and sends messages to the dashboard gauge. Fuel additives can build up on the reostat surface and give false readings at the dashboard. A fuel system cleaner might help, but ultimately, you will need to replace the fuel gauge sending unit. It is located inside the gas tank. Emptying the tank, removing the tank from the car, and replacing the sending unit can run you a couple hundred dollars. Until you get it fixed, rely on your own gas mileage figures to estimate how many miles you can drive between fill ups.

RE: gas problems with 2000 CHEVY IMPALA...? I'm having problems with my spouse's 2000 Chevy Impala. For some weeks the motor vehicle has been sputtering or idling susceptible, and the different day it finally broke down. The engine will turn over even nevertheless it dies as quickly because it cranks up. Acts like the motor vehicle is out of gas. even nevertheless, if I provide the motor vehicle gas jointly as...