i would have to assume it is for the steering wheel controls. since you don't have them, there aren't fuses for them. i'm not really sure if camaros ever got steering wheel controls actually. i think it was only pontiacs. which would still make sense.
are they on the turn signal switch? did you push the little button over to turn it on? well i guess you have to since you push it over to set it. pop a 20 amp fuse in there and see. i think the cruise fuse is in the panel off of the dash though....