Erratic Fuel Gauge Operation on Buick LeSabre

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
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Average mileage: 119,178 (32,000–250,000)
9 model years affected: 1996, 1997, 1999, 2000, more2001, 2002, 2003, 2004, 2005
278 people reported this problem
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Viewing 1 - 20 of 180 comments
Fuel gauge has false readings when under half of tank...dealer said it was fuel level sensor..Approx $ 500.00 to repair.. have been using trip meter, at 200 miles I fill up....Does any one know if this module can be replaced by removing inside of trunk panel????
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fuel sensor. Can it be removed from the trunk access?
Gas gauge needle reads full all the time
fuel gauge inop shows full at all times..
Replaced fuel pump and the problem still there.
guage becomes very eratic when it drops below the 3/4 mark
CAN'T COUNT ON FUEL GAGE HAVE TO TRACK THROUGH TRIP METER. GAGE STAYS AT 1/2 TO FULL AND BOUNCES ALL OVER THE PLACE
Gas gauge stopped reading correctly. Diagnosed by dealer as the gas tank module. Buick wants $700 to install new one, parts and labor. What a ripoff. We keep track of mileage but my old Toyotas never had a failure like this in only 10 years!
I now have 132,000 miles on the car and have learned to live with this problem. When I first get into the car I turn the key partially so the gauges read . This brings up an accurate reading of the gas gauge. Only after I start to drive does the gauge move to the full position and stay there.Knowing my average fuel consumption I can calculate how far I can go and still have gas. I never let the tank go below one quarter full.
If the gauge stops working completley, I will have it repaired.
it doesn't register properly. I just keep track of the mileage.
car wont start, low fuel range light on, fuel in car
fuel gauge goes from 1/4 to 3/4 when tank is under half.
fuel level gauge doesn't accurately reflect fuel level. Often indicates full tank, when it may be near empty.
fuel sensor doesn't register the correct level of gas left. false readings
Erratic Fuel Gauge Operation due to faulty plastic on the part. Opted to NOT replace, just watch the mileage on the car and fill tank every 100 miles of in town driving.
When near empty the fuel gage shows a half tank and gauge goes back and forth from near empty to half full.
When the fuel level gets down to half a tank or less the fuel gauge readings become erratic, have not fixed it.
mechanic said it would be $500 to fix so i didn't. it became erratic at less than half a tank.
my fuel gauge will read 1/4 tank, the after I turn a corner it will go up to full and stay there. I know there is only a 1/4 tank. I was told to replace the fuel sensor.
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my gas gauge would only work when it reached the half way mark. anytime before that it read full the whole time. its not a really a big deal though because atleast i wont ever run out of gas haha.