If it is dangling then most likely the hinge pin has rusted away. Take the assembley out and then you should be able to pop out the rusted remains of the hinge pin and use a small nail as a new pin. that is what i did to fix mine.
under the trap door in the trunk
i cant open my fuel door
In the fuel tank
my fuel pump is not work
my 2000 Montana is still on its original fuel pump
Under the car by the fuel tank
does not have one
nope.
How do I replace a fuel pump on a 2000 grand prix gtp
In the fuel tank, integral to fuel pump.
Its in the fuel tank. you need to drop the tank to repair.
Inside of the fuel tank.