You first have to jack your vehicle off the ground, and get underneath it. The transmission pan is almost in the middle of the vehicle. You unscrew the pan, but be careful, transmission fluid will get all over you if you're not careful. You must get a new gasket to fit the shape of the pan. After you have done this, lower the vehicle and put new transmission fluid in the resisvoit under the hood. Check to see ho w much you are supposed to add for your vehicle.