2003 chevy silverado, fuel gauge started registere...

You could use two resistors, Two different ohms specs for full and empty. Place resistor between proper wire colors in diagram. Turn on the key, If gage reacts properly to full and empty resistors, then I think the problem is the sending unit in gas tank. If not, the problem could be almost anywhere, wiring circuit--pcm--instrument cluster. I did see trouble codes relating to fuel gage sending unit. I hesitate to get into that? good luck

If gauge is pegged full then while driving goes empty then full then 1/2 it is the circuit board inside the fuel tank that has gone bad. to get the tank to register correctly then you must remove tank remove fuel pump module the float arm can be adjusted to read correct level

Bad fuel sender unit or fuel sender wiring

it is the fuel level sender. the board will wear and cause it to lose signal; in certain spots. will need to replace the sender to fix problem. it will start registering once you burn some gas off. full is just where it drops out

your both idiots

Sorry to say,but the fuel sending unit is the problem,the fuel tank will have to be lowered out of the vehicle to replace the unit.If the fuel sending unit is not available by itself you will have to replace the whole fuel pump assembley.

Hi I have a 4x4 2003 chevy 3500 silverado dually with dual tanks
rear tank stoped pumping into front tank and was full . I siphoned the fuel out of rear tank and fuel gauge reads 9/16 full . is there a way to reset the fuel sending units so they can calculate the fuel readings. I always filled the two tanks with the same amount of fuel
until now ? I'm thinking there is a inkine fuel pump

THE DURAMAX ENGINE INJECTORS GO BAD AND SPRAY TO MUCH DIESEL AND IT FILLS THE CRANK CASE UP 200 THOUSAND MILE WARRANTY COMMON PROBLEM DON'T DRIVE IT ANY MORE IF U HAVE BAD INJECTORS.

the only thing that will cause this symptom is the fuel tank sending unit.

Check the fuel pump relay:


It is below the park lamp relay.