So it looks like i might have a leak from the timing cover gasket in my car, I didn't think that it was possible, but I looked at the repair guide and this is what it shows

. it is a 3.4l v6 . it looks like there are two coolant passages that go through the timing cover to the water pump... so does anyone know if this is infact the situation? and in the case that it is the timing cover gasket, what do you think the cost to fix would be?