Gas guage moves back and forth from emty to full with gas in it

if you are having problems filling the gas it could be a couple things. first the pumps at the gas station over fill at a fast speed, try slowing them down and try moving the hose back a little to give it some breathing space instead of shoving it all the way in the gas area. next is try a different gas station, believe it or not there is a difference.

hi it is proble emty at 1/4 tank your gage is proble off try at 1/4 tank to fill tank all the way up an check an see if how many gal. you put in it an check your owners manual to see what size tank an that will show you if the gage is off !

mcdevito75 here, Hello john, the sending unit in the gas tank could be faulty of stuck, try leaning against one of the back fenders to move the body of the car from side to side to try to free up the sending unit. You may have to live with it unless yoyur local shop changes the sending unit in the gas tank.

You have a bad fuel level sensor.The fuel tank needs to come out and the sensor replaced.You don`t have to replace the pump assembly.You can get the level sensor separate.I`m not sure if the parts stores have it but I know the dealerships do.Hope this helps.Good luck.

the fuel sender is at fault. these were common on that year range chevy products. the sender is in the fuel tank, as part of the fuel pump assembly. it is a very expensive unit, so a lot of people just let it go and continue to calculate mileage

the gas guage on your tank is worn out that's why when he hits the higher surface he go back to empty replace it.

sokol520--Sounds like fuel pump/fuel guage sending unit. They are integrated and located inside the fuel tank, most likely.

THIS PROBLEM IS CAUSED BY A DEFECTIVE GAS GUAGE SENDING UNIT, U WILL NEED TO PULL THE FUEL TANK AND REPLACE IT.

Yes it is all one unit, and yes that is what the problem is. don't use aftermarket parts, use OEM, (Delco Remy) they are much better quality.

there is a sending unit in the tank this has probably clogged or wore out it has a filter on it, with gas debries this will make your guages stop working correctly

replace sending unit by dropping tank with gas out of tank and then pull out sending unit replace with new one