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If the Bonneville is like my GTP then the fuel filter is in front of the fuel tank
There is none to find.
the owners manual states that replacement of the fuel filter is not required.
where is the fuel pump relay located on a 1992 Pontiac Bonneville on the outside or the inside
Answering "1999 Pontiac Bonneville fuel shut off switch?"
where is the fuel pump relay located on a 1992 Pontiac Bonneville on the outside or the inside
The average cost to replace a 2000 Pontiac fuel pump is $350. The fuel pump is inside of the gas tank. The location of the fuel pump adds several hours of labor to the cost.
It is inside the fuel tank, you have to drop the tank, and remove the sending unit, from the tank to replace the fuel pump.
In the fuel tank
Fuel capacity on a 2001 Pontiac Bonneville is 18 gallons.
Most likely the clamp on the fuel line has worn through the line - check the fittings and perhaps replace fuel line
it is in your tank