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.Google+
Car Problem Reports
Cadillac DeVille Fuel Level Sensor Failure
Cadillac DeVille Problem
Average Mileage: 117,293 mi (12,600 mi - 230,000 mi)
Visitor, 2003 Cadillac DeVille, 128,000 mi
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.
Visitor, 2000 Cadillac DeVille, 130,000 mi
Had to have fuel sensor replaced.
my car can be bone dry in fuel, but the dash shows full or half tank.
Visitor, 2000 Cadillac DeVille, 60,000 mi
Replaced rheostat in the fuel sending unit.
Visitor, 2001 Cadillac DeVille, 115,000 mi
THIS HAS BEEN A PROBLEM SINCE IT HAD 50k. I JUST FILL Y TANK WHEN I GET CLOSE TO 300 MILES.
Visitor, 2002 Cadillac DeVille
Fuel Sensor reports inaccurate fuel levels.
Visitor, 2003 Cadillac DeVille, 118,000 mi
already replaced fuel filter, but she still wants to stall...gonna replace entire pump next...??????
Visitor, 2002 Cadillac DeVille, 153,435 mi
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
Visitor, 2000 Cadillac DeVille, 111,000 mi
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
Visitor, 2002 Cadillac DeVille, 129,000 mi
when is full tank it shows ok, as it go empty it starting to show is full tank, dtc P0463.