Erratic Fuel Gauge Operation on Cadillac DeVille

Problem Description and Possible Solution

It is common for the fuel level sensor in the fuel tank read the fuel level incorrectly. The sensor must be replaced to correct the condition. Our technicians recommend having the complete fuel pump module replaced on high mileage vehicles.

Problem Data
RepairPal Verified
Average mileage: 121,991 (12,600–260,000)
14 model years affected: 1990, 1991, 1992, 1994, more1995, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
190 people reported this problem
Viewing 1 - 20 of 86 comments
Fuel sensor seems to report accurate from full tank to just under half a tank. Then it starts going up towards full again as the tank further empties.
It goes to full to Empty idk how much gas is in it.. I just wanna know how can I fix this problem
Fuel gauge does not work properly shows full most of the time can't afford to have fuel pump to be pulled out of the gas tank
Had to have fuel sensor replaced.
my car can be bone dry in fuel, but the dash shows full or half tank.
Fuel Sensor reports inaccurate fuel levels.
guage reads true (I think)when I turn key on but when the car starts the guage will read full and not move till car is turned off-hv not been able to fix or hv fixed-any ideas ? loumenn @yahoo.com
Gas gauge reads full when empty and shoots back and forth.never know how much fuel is really in there
when is full tank it shows ok, as it go empty it starting to show is full tank, dtc P0463.
Replaced rheostat in the fuel sending unit.
already replaced fuel filter, but she still wants to stall...gonna replace entire pump next...??????
fuel indicator is not reliable
Pump won't work nor gauge
When the gas gets low the needle jumps to full tank only when the gas gets low below 1/8 of a tank
that fuel gauge reads anywhere from 6 gallons to F then back to E no matter what, but still tells flashes E multiple times when I really am out of gas
Been like this for over a year. I go by gal of fuel used window.
Problem just started all of a sudden last June. Fuel gauge shows full when filled, then drops to 1/2 tank as it is used, then starts to go back up to full as the tank gets low. Have been setting trip button every time I fill up and add more fuel when I have gone about 250 miles. Plan to replace the fuel filter.
when the tank is less than 1/2 full the gauge starts going back to full as the tank gets lower and lower
installed new delco sensor, worked great for two months. went bad again. in process of changing a second time.