Not really, you can see what sections need updating online, mine was just a trans, radio & rear sensors update, all other firmware was already up to date like engine, brakes & suspension etc, but I wanted it updated before blower goes on & new tune goes in.
Try this link you can have a peek of your system from GM
http://tis2web.service.gm.com/tis2web
enter your VIN number & it will show you status of all your systems.