GM Service Manual Online
For 1990-2009 cars only

Before assembly, carefully and thoroughly inspect all drive unit parts for wear or stress. Replacement of worn parts eliminates costly drive component repair after assembly.

    • Inspect the pinion gear shaft for unusual wear.
    • Inspect the pinion gear and the side gear teeth for wear, cracks, scoring, and spalling.
    • Inspect the thrust washers for wear.
    • Inspect the fit of the side gears in the differential case.
    • Inspect the fit of the side gears on the axle shafts.
    • Inspect the differential case for cracks and scoring.
    • Inspect all parts for wear. Replace parts as necessary.