Thanks for getting back. I looked at them incidentally after the job was done but I didn't get down and look carefully. From a distance they looked new enough.You would have needed to view them right after the brake job to be sure. The rear brakes get very little wear on the Volt. I'm at 120k on my 14 and they still work fine.
The heavy rusting on the "FNC rotors" after the first rainstorm they sat out in was the first point I had concerns and kept an eye on it since then and, yeah..still have concerns. I live in southern New England but the weather has been fairly mild this year, probably not as much salt on the roads as usual...One usually only sees slight surface rust for quite a while unless they live in an area with massive amounts of winter road salt
I'm moving from the area within a few months and likely won't ever be going back to this shop again anyway, they don't know that but I'm wondering if it's worth the aggravation approaching them about it at all, other than the FNC issue I don't know that I can finally prove they didn't do the job right, I just have suspicions. "Coated rotors" is definitely what they charged me for on the bill, though.
And if I take the time to take it to another shop that looks at them and agrees with me I might as well just have that shop do it right, I'd never let the previous place work on it again regardless!