This morning when i was leaving, i went to back out of my garage and when it went into reverse i noticed it wasnt creeping back. i gave it a little bit of gas and it still didnt move. Gave it a bit more gas and heard a very audible clunk and it started rolling back like normal. Anyone know what it could possibly be? Never had this happen before and my wheels werent turned at all. The only clunks ive heard from thsi car ever is when im turning at very slow speeds but i heard that steering shaft related.