Erratic Fuel Gauge Operation on Pontiac Bonneville

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
RepairPal Verified
Average mileage: 139,891 (40,000–227,000)
8 model years affected: 1997, 1999, 2000, 2001, more2002, 2003, 2004, 2005
52 people reported this problem
Viewing 1 - 20 of 24 comments
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.
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.
Fuel gauge no longer relates to amount of fuel in tank, told it was part of the fuel pump which would need replacment.
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.
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!!!!!!!!!!!!!!!!!!
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
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.
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!!!
The temp fuel gauge was showing maxed out on temp but no coolant problems.. ending being bad sensor..replaced
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!!!!!!!!!
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!