Passenger Side door lock won't lock Please Help
 

I have a C6. The passenger side door lock, won't lock. When you close the door it does not click shut. The latch won't make the two clicks that locks the door. I pulled the lock off and it makes a firing noise when you press the open button, but won't lock. I brought it to a shop and they said it's possibly a module or relay but couldn't find the problem. Any help would be greatly appreciated.


Thanks,