Having some "clunking" type sounds coming from what I expect to be the axels? Does thing at very low speed(under 10mph) and goes away. Drives fine otherwise on the road. Sounds as is something is broke. Also sometimes when parked for around 8/10 or so, when descending the truck makes noises from the wheels resembling a bicycle wheel that needs greased. Not sure if the problems are related.This is the best I can explain this problem is lameins terms. Any suggestions?