Erratic Fuel Gauge Operation on Cadillac Seville SLS

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: 125,149 (68,000–175,000)
6 model years affected: 1999, 2000, 2001, 2002, more2003, 2004
21 people reported this problem
9 people shared problem details
Fuel level starts to wander after fuel indicator reaches about 1/4 fuel left in tank.
Not fixed yet. Add fuel by watching mileage.
When the fuel gauge falls below one-half tank, the gauge begins reading incorrectly...showing everything from a full tank to half tank.
Gas gauge doesnt read right
The Fuel Gauge is varies for empty to full tank. I am never sure how much fuel I have in my fuel tank.
Erratic fuel gauge operation
I've had this issue for almost a year. But now the gauge will flop back and forth between full and empty.
Fuel gauge not reading properly, fluxing back and forth. Diagnosing.
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