2003 sunfire. The nut in front of the wheel bearing hub on the front axle. Anyone know what size socket I need? I have to get it off in order to change wheel bearing(hub), and I don't want to buy a bunch of sizes I won't ever use.

It's likely 30 mm, but it's best to use a caliper and measure it. I always keep a caliper on the top shelf of my tool chest for such purposes.