Took my 91 deville into the shop.. Because it wasn't turning over.. I have a push start button. And when I would turn the keep fully light panels.everything would come on.. Hit the button and it just doesn't want to kick over.. Fuel filter and pressure was good had a strong spark.. Days later I called and told my I need to take it to a dealership because its a computer issue... So what I'm trying to grasp would I be better buy a bcm n put it on myself or some me knowledgeable.. Or can there be more then that tied Into bcm that needs to be looked at ? Or is there other computer systems parts that would cause it not to start.. Tryifng to figure out if I tow it home or to the dealership...