GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2008 🢒 Lucerne 🢒 Transmission/Transaxle 🢒 Automatic Transaxle - 4T80-E 🢒 Differential Carrier Overhaul

    Object Number: 15503 Size: SH
  1. Use a pin punch to drive out the differential pinion shaft retaining pin (115). Remove the following parts:
    2. • The differential pinion shaft (114)
    • The two pinion gears (116)
    • The two pinion thrust washers (113)
  2. Remove the right differential side gear and output shaft (112). Remove the differential thrust washer (111).
  3. Inspect the gears and the thrust washers for burrs or damage.
  4. Install the following parts:
    5. • The differential thrust washer (111)
    • The right differential side gear and output shaft (112)
    • The output shaft snap ring (56)
    • The two pinion thrust washers (113)
    • The two pinion gears (116)
  5. Install the differential pinion shaft (114).
  6. Install the differential pinion shaft retaining pin (115).