With the tank removed from your Pontiac Grand Am, you still need to gain access to the fuel pump located inside the gas tank. A specialized tool that you can get from your Pontiac dealer will make the task easier and prevent possible sparking when you remove the cam lock ring (bulkhead) that holds the cap on the top of the gas tank. The tool is called a J3976 tool.
Tools Used: Tools, J3976 tool, Fuel pump kit
Replace a Fuel Pump
Remove the cam lock ring using the J3976 tool. Place the tool on top of the cam lock ring and give it a quarter turn counterclockwise. Lift the fuel sender and fuel screen out of the gas tank.