Shocks do tend to make noises when the valves start to wear. Do they seem to control the ride good still? Shake it and see if it stops right away when you stop (like it should) or if it wobbles a couple times. If it keeps moving when you stop moving it they are likely going out. If not, maybe check other areas for noise. I've seen shocks make noise though even when they are fairly new, it just doesn't happen often.