The 2003 Pontiac Bonneville has a gas tank capacity of 18.3 gallons. The low fuel warning light will come on when the gas tank level gets down to 2.3 gallons.
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it is in your tank
The fuel tank has a large vapor leak.
In the fuel tank
a 1992 Pontiac Bonneville can hold 18 US gallons of gas in its tank.
I have a 1998 bonneville. It does the same thing. Now i have to fill it like every 200 miles or so.
It is inside the gas tank
Inside the gas tank
If the Bonneville is like my GTP then the fuel filter is in front of the fuel tank
i the fuel pump is in the fuel tank, you have to drop the tank to get to it.
The Fuel Tank capacity for 2007 Pontiac G6 sedan is 16 gal.