Today I noticed a new noise coming from I think the rear. What happens is if I put the car in neutral when coming to a stop just before it gets to stop there appears to be a slight clicking coming from the rear or back portion of the car. Sounds a bit like a ratchet wrench going in reverse. I does not do it every time and only when coasting in neutral as a slow speed. If it is in gear it does not happen. I am assuming it is from the rear end or trans but do not know if it is normal or something that needs to be checked. Any ideas?