Erratic Fuel Gauge Operation on Cadillac Seville STS

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.

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Average mileage: 126,253 (70,000–199,000)
8 model years affected: 1990, 1995, 1997, 1999, more2000, 2001, 2002, 2003
24 people reported this problem
11 people shared problem details
When the actual fuel level is just below 1/4 tank the guage will float to full and stay until the car is shut off.
When the fuel level gets low, such as quarter tank, it jumps around and goes to three quarters not reliable have to keep full
Gas gauge reads full even when it is almost empty. Once I fill the the tank the gauge is up and down until it settles to full.
When level is quarter full readings are erratic,not reliable
Fuel guage showed irradic readings. Replaced the sensor to resolve the issue.
fuel gauge reads incorrect fuel quantity
1/4 tank and it goes nuts so I keep track of gallons used
Gauage goes up and down, then flat empty. Had to call AAA for gas!
Fuel tank level fluctuates up and down while driving
engine shut down, reads full, towed to shop. Low pressure, added gas. pressure up & started right up, bad fule sensor. replaced complete fule pump modual to fix.
Fuel level is always wrong. Sometimes it shoots to full, then immediately drops to E.
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