Every once in a while when I go wot in my car in first gear. I can hear a loud grind like sound. I thought it could have had something to do with my tranny, so i had my tranny rebuilt (hoping it would fix it/needed to be done anyways) and I was just wondering if this could be a sign of my transfer case about ready to go...I dont have the death whine tho. Just kind of confused. Any help will be appreciated