GM Service Manual Online
For 1990-2009 cars only
    • Check the fit of the side gears in the differential case and on the axle shafts.
    • Check the fit of the pinion gears against the pinion shaft and the differential gears. There should be no play between the side gear and the axle shaft.
    • Check the differential case for cracks and scoring and replace all of the worn parts as necessary.