Put a new motor in. The key was missing replaced with new steering column with key. Security light is on steady not flashing. When turn key on lights and all work car won't crank or even try. Can hear fuel pump come on. If I jump the starter it will crank and run for few seconds then cut off.. Please help motor is 3.8 v6

 

You should replace the tumbler from the previous column, VATS needs the old key.