95 Buick Riveira Supercharger .... when turn blinker on, car dies....or won't start at all. Have to try several times and wait for indicator lights on dash to come on and for the door/key alarm to sound before can turn over car. Sometimes have to turn steering wheel til wheels are straight. Son started hitting/shaking steering column to make indicator lights come on. Any ideas? Ignition Control Module? Ideas about costs to replace?