Wipers not working
 

I recently had some work done, as we are getting ready to sell our Monte. A few weeks later I noticed the wipers weren't working ... and they were working fine beforehand. Is it possible that something just got pulled loose or disconnected?? The turn signals work just fine, as well as the cruise control. **I also checked fuses, and although they were all good, I replaced them ... just to be safe.
Any ideas??

Thanks!