Join Date: Mar 2010
Location: Minneapolis, MN
Knowing the year and trim level would help us answer that for you. There seems to be a lot of variance, based on what you've got.
I'm actually going to be doing this mod in sometime in the next couple days and can give better information after it's done. As far as I know, '06 and earlier use a 4-spoke wheel, so you wouldn't be able to do a direct swap with a later model wheel. '07-'10 use the 3-spoke, so an SS wheel should work.
As far as the radio controls, that's the question I have been unable to get answered. I've read a lot of forum posts at cobalt sites, and from what I can tell, it should work plug-n-play. There is a way to wire it if it doesn't, but it involves tinkering with the clockspring, which is not something I'm willing to do for the minimal gain.
I hope to do a how-to, but in case you dive in earlier, just make sure you disconnect your battery leads, wait 5 minutes for the backup power supply to discharge, and pull the SRS fuse before you get going on it.
"You all know I take great pride in my title as Mr. Positive."