It all started last October when I was pulling a friends 39 ft camper from his spot to the storage lot. While pulling it out, felt a "clunk", along with hearing it. Finished moving it and didn't look into the problem right away. Fast forward to yesterdays storm here in New England and almost got stuck. This is not an everyday driver and I basically forgot to look into the problem. Well, I can hear the transfer clicking when I turn the switch on the dash, both into hi and lo range. 4x4 does not work. Is it possible I broke some type of shear pin? Any help would be greatly appreciated.