The front differential is actually part of the transmission housing. The most common problem deals with the spider gears coming apart resulting in either a loud noise when moving or the vehicle doesn't move at all. If the vehicle doesn't move, place it in gear and rev the engine. Does the speedometer move? If it does, the trans is working but the problem is in the differential.
To repair it, the transmission needs removed. There is enough room to remove the differential cover, but not enough to get parts out and then back in. Another concern is if you are leaking ATF. Many times when they come apart, they will actually crack or break the trans housing.
Let me know if you have other questions.
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Thursday, November 25th, 2010 AT 7:19 AM