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.Google+
Car Problem Reports
Pontiac Bonneville Fuel Level Sensor Failure
Pontiac Bonneville Problem
Average Mileage: 137,737 mi (83,000 mi - 227,000 mi)
The guage will show that I have more gas than I actually do.
Visitor, 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.
Visitor, 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.
Visitor, 2005 Pontiac Bonneville
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!!!
Visitor, 2001 Pontiac Bonneville, 112,372 mi
FUEL SHOWS WRONG ALL OVER
Visitor, 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!
Visitor, 2000 Pontiac Bonneville
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
Visitor, 2005 Pontiac Bonneville, 129,000 mi
fuel gage reads all over and the digtal gages not reading right. 2005 pontiac bonneville GXP