In this video tutorial you will learn how to siphon gas out of a modern 3.8 GM engine. The tools you need are a screwdriver, a clear plastic pipe and a container to hold the gas. Every fuel tank has a fuel inlet and outlet point. Remove the two clamps on the pipe connected to the fuel outlet point on the tank and fix the clear plastic pipe. The other end of the plastic pipe goes in to the container. Now locate the fuel pump relay in the relay box. In this engine it is relay number 19. Remove the relay and put a jumper wire between pins 30 and 87. The fuel pump starts running and fuel will now be siphoned in to the container.