GM Service Manual Online
For 1990-2009 cars only

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


    Object Number: 1306510  Size: SH
  1. Clean the differential case in solvent.
  2. Inspect the differential case for the following conditions:
  3. • Chips or cracks
    • Damage to the bolts holes (1)
    • Unusual wear, grooves or scoring
    • Damaged side bearing flanges (2)
    • Heat discoloration
    • Worn differential pin bores (3)

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


    Object Number: 777572  Size: SH
  4. Clean the pinion gear in solvent.
  5. Inspect the pinion gear for the following conditions:
  6. • Unusual gear teeth wear, pitting or heat discoloration (1)
    • Pinion splines for wear, pitting or twisted splines (2)
    • Pinion shaft thread condition (3)
    • Ensure pinion gear end is not bent or burred over on the end (4)

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


    Object Number: 777575  Size: SH
  7. Clean the ring gear in solvent.
  8. Inspect the ring gear for the following conditions:
  9. • Damage to the threaded holes (1)
    • Unusual wear or heat discoloration to the gear teeth (2)

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


    Object Number: 777576  Size: SH
  10. Clean the pinion flange in solvent.
  11. Inspect the pinion flange for the following conditions:
  12. • Splines for wear, pitting or twisting (1)
    • Sealing surface for grooves or pitting (2)