How do you remove gas lines from tank on a 2002 Chevy avalanche?

To remove the gas lines from the tank of a 2002 Chevy Avalanche, first, ensure the vehicle is off and the fuel system is depressurized. Disconnect the negative battery terminal for safety. Use a fuel line disconnect tool to release the clips holding the fuel lines in place, then carefully pull the lines away from the tank. Make sure to have a container ready to catch any residual fuel that may spill during the process.