How do you drain the gas tank on a 2003 Buick rendezvous?

To drain the gas tank on a 2003 Buick Rendezvous, first ensure the vehicle is parked on a level surface and the engine is off. Disconnect the fuel pump relay or fuse to prevent the fuel pump from running. Then, access the fuel tank by either removing it or using a siphon pump through the fuel filler neck. Always take precautions to avoid spills and ensure proper ventilation when handling fuel.