How do you get the ignition out of a 1998 astro van?

Don't try to do it yourself. Airbags tend to be a little touchy, and if you make a mistake it could injure you and be quite expensive for a new airbag. You need to pull the steering wheel. There are one or two screws under the turnsignal switch that holds the ignition switch in place. Pull the screw and the switch should come out easily.