Erratic Fuel Gauge Operation on Pontiac Bonneville

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: 140,022 (40,000–227,000)
7 model years affected: 1999, 2000, 2001, 2002, more2003, 2004, 2005
44 people reported this problem
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Viewing 1 - 20 of 21 problem details
2002 Pontiac Bonneville 97,000 mi,
gas guage does not read, i replaced the cluster, fuel level sensor, and the complete fuel pump assembly. when you start the car the fuel guage jumps to full and after about 15 seconds it goes to empty. the car has about 3/4 tank of gas in it. don't know what else to check out.
2001 Pontiac Bonneville 50,000 mi,
Fuel gauge swings back and forth when it shows 1/2 full. When full tank reaches 1/2 mark it starts jumping around. I set the "fuel remaining" readout and when it show I only have 2/3 gallons left I fill up. Too costly to replace sensor & fuel gauge! Otherwise great car.
The guage will show that I have more gas than I actually do.
2004 Pontiac Bonneville 40,000 mi,
The gas gauge does not read the fuel level correctly, so I have to use my trip reset to give me an estimate as to how much fuel I use before I fill it back up. This car is a lemon...way too many problems to count!!!!!!!!!!!!!!!!!!
2004 Pontiac Bonneville 227,000 mi,
Fuel gauge no longer relates to amount of fuel in tank, told it was part of the fuel pump which would need replacment.
2005 Pontiac Bonneville 156,000 mi,
Car doesn't run well when the ac is on, or when we drive uphill. It struggles to fire up when you turn it off a lot of times.
1999 Pontiac Bonneville 120,000 mi,
gas guage drops to empty.
2002 Pontiac Bonneville 125,000 mi,
This car has a lot of problems with the Fuel gauge/ fuel pump. There's kits you can buy to replace the gauge sender or the the fuel pump, but since it's common for both to go, you might as well change the whole unit since you have to open up the access panel in the gas tank anyways.
just bought this car awesome but it left me on way home thought it was full and car data indicted it had 306 miles to empty so drove my merry way only to have to walk a mile to get gas.not sure if its a gauge problem or fuel pump
Fuel gauge gets to about half then goes to almost full then back to 1/4 @ about 13 gallons used
Fuel gauge registers over full or near empty when tank is 20% to 90% full. Have to monitor fuel level by mileage. What a pain!!!
2005 Pontiac Bonneville 83,000 mi,
My fuel tank guage will read 3/4 full when I park it on the lot in the morning at work. When I get ready to leave work it shows 1/4 full?? Thought someone was siphoning my gas!
2002 Pontiac Bonneville 189,000 mi,
I have had every part on this car replaced to the total of 8,000$ and it'll run for four days then it won't start anymore...then as soon as the towtruck pulls up it'll start...every sensor including fuel pump has been replaced...I can't figure out the problem and I'm about to set this piece of crap on fire!!!!!! I need this car for doctors appointments and We need to find a new place to live but can't do it when it keeps breaking down!!! HELP!!!!!!!!!
The fuel guage never reads the fuel level
Fuel gauge not working - jumps around erratically.
2002 Pontiac Bonneville 160,000 mi,
I don't think it's always accurate or else the sensor is floating around ("fuller" tank when going uphill, "empty" tank going downhill). I just reset the gas mileage each time I fill up.
2001 Pontiac Bonneville 135,000 mi,
Fuel gauge does not read correctly. Pontiac Bonneville
2000 Pontiac Bonneville 97,000 mi,
Fuel gauge went haywire. Fuel take sensor had to be replaced. $174 just for the parts.
2000 Pontiac Bonneville 196,000 mi,
Fuel take reads incorrectly
2001 Pontiac Bonneville 112,372 mi,