I hope someone can help me, my 2002 4.7l quad cab dakota has a groaning noise and vibration. It happens at all speeds and is more noticable when it's cold outside.When it's below 30 degrees outside my keys jingle in the ignition to the point that i take my ignition key off the keyring. I've searched the internet and saw it could be ton's of things but I'm thinking the problem is in my front differential maybe a carrier bearing. Thats a very expensive fix so Im hoping not. attached is a video that shows some of the play in my axle.any help would be appreciated

http://www.youtube.com/watch?v=N_pqX...ature=youtu.be