GM Service Manual Online
For 1990-2009 cars only

    Warning: Refer to Safety Glasses Warning in the Preface section.


    Object Number: 1978914  Size: MH
  1. Clean all parts with an approved solvent.
  2. Visually inspect all the parts for excessive wear or breakage. Replace the parts if necessary.
  3. Inspect the differential pinion gears (7) and the side gears (8) for any of the following conditions:
  4. • Wear
    • Cracks
    • Scoring
    • Spalling
  5. Inspect the differential clutch disc packs (2).
  6. • Inspect the splined differential clutch disc (3)
    • Inspect the eared differential clutch disc (4)
  7. Inspect the differential clutch disc thrust washers (5).
  8. Inspect the differential thrust washers for wear (6).
  9. Inspect the differential carrier case (1) and (10) for cracks and scoring.
  10. Replace the differential assembly if there is damage to the differential carrier case.