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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 67 (Rear Drive Axle - Repair Instructions) >> Repair Instructions >> Differential Drive Pinion Gear Seal Replacement (L3B, F46) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.
  1. Raise and support the vehicle. Lifting and Jacking the Vehicle
  2. GM5395705

    Rear Tire Front Air Deflector Bolt (1) - Remove [2x]

  3. Rear Tire Front Air Deflector- Left Side (2) - Remove
  4. GM5400553

    Rear Wheelhouse Liner Screw (1) - Remove

  5. Underbody Rear Air Deflector Plastic Nut (2) - Remove [3x]
  6. Underbody Rear Air Deflector Bolt (3) - Remove [3x]
  7. Underbody Rear Air Deflector Nut (4) - Remove [2x]
  8. Underbody Rear Air Deflector- Left Side (5) - Remove
  9. GM5471237

    Rear Tire Front Air Deflector Bolt (2) - Remove [2x]

  10. Rear Tire Front Air Deflector- Right Side (1) - Remove
  11. GM5400642

    Rear Wheelhouse Liner Screw (1) - Remove

  12. Underbody Rear Air Deflector Bolt (2) - Remove [3x]
  13. Underbody Rear Air Deflector Plastic Nut (3) - Remove [3x]
  14. Underbody Rear Air Deflector Nut (4) - Remove [2x]
  15. Underbody Rear Air Deflector- Right Side (5) - Remove
  16. GM5471236

    Floor Panel Number 4 Cross Bar Reinforcement Bolt (2) - Remove [6x]

  17. Floor Panel Reinforcement (1) - Remove
  18. GM5309188

    Catalytic Converter Nut (1) - Remove [2x]

  19. GM5394596

    Electrical Connector (1) @ Exhaust Control Valve Actuator - Disconnect [2x]

  20. GM5309202

    Exhaust Muffler (1) @ Exhaust Intermediate Pipe Insulator-Left Side (2) - Separate

  21. Exhaust Muffler (1) @ Exhaust Rear Muffler Insulator-Left Side (3) - Separate
  22. GM5309211

    Exhaust Muffler (1) @ Exhaust Intermediate Pipe Insulator-Right Side (2) - Separate

  23. Exhaust Muffler (1) @ Exhaust Rear Muffler Insulator-Right Side (3) - Separate
  24. GM5399464

    { If equipped } Front Crossmember Brace Nut (1) - Remove [4x]

  25. { If equipped } Front Crossmember Brace (2) - Remove
  26. GM5394598
    NOTE:

    With the aid of an assistant, lower the exhaust system from the vehicle.

    Exhaust Muffler (1) - Remove

  27. Catalytic Converter Gasket (2) - Remove and DISCARD
  28. GM5309833

    Exhaust Heat Shield Bolt (1) - Remove [6x]

  29. Exhaust Intermediate Underbody Heat Shield (2) - Remove
  30. GM5811464

    Floor Panel Number 2 Cross Bar Reinforcement Bolt (2) - Remove [4x]

  31. Floor Panel Number 2 Cross Bar Reinforcement (1) - Remove
  32. GM5811466

    Propeller Shaft Hub Clamp (1) - Remove and DISCARD

  33. GM5317835

    Mark (2) the relationship of the propeller shaft to the rear differential flange using a paint pen.

  34. CAUTION:

    When removing the propeller shaft, do not remove the propeller shaft coupler from the propeller shaft assembly. The only bolts that should be removed are those that mount each coupler to the transmission output flange, and to the rear drive axle input flange. Failure to properly remove the propeller shaft assembly may cause coupler damage, resulting in necessary replacement of the entire propeller shaft.

  35. Rear Propeller Shaft Nut (3) - Remove [3x]
  36. Rear Propeller Shaft Bolt (1) - Remove [3x]
  37. Support and secure the propeller shaft to a suitable hydraulic jack stand.
  38. GM5317838

    Propeller Shaft Bearing Support Bolt (1) - Remove [2x]

  39. GM5811468

    Propeller Shaft (1) - Remove

  40. GM5457792
    NOTE:

    The rear wheel drive shaft universal joint retainer (1) and washers (2) are serviced as a rear wheel drive shaft universal joint retainer kit consisting of 2 bolts and 1 washer.

    Remove and DISCARD the 6 rear wheel drive shaft universal joint retainer (1).

  41. Remove and DISCARD the 3 wheel drive shaft washers (2).
  42. GM5461601

    Reposition the rear wheel drive shaft (1) to clear the rear axle shaft.

  43. GM5342244
    NOTE:

    The rear wheel drive shaft universal joint retainer (1) and washers (2) are serviced as a rear wheel drive shaft universal joint retainer kit consisting of 2 bolts and 1 washer.

    Remove and DISCARD the 6 rear wheel drive shaft universal joint retainer (1).

  44. Remove and DISCARD the 3 wheel drive shaft washers (2).
  45. GM5459257

    Reposition the rear wheel drive shaft (1) to clear the rear axle shaft.

  46. Using and inch-pound torque wrench, measure and record the rotational torque of the differential ring and pinion gear and related components.
  47. GM5478753

    Using the DT-45012  Holding Fixture (1) with a breaker bar, hold the rear wheel drive shaft flange.

  48. Using the proper size socket and a breaker bar, loosen the rear wheel drive shaft flange nut (2).
  49. Remove the DT-45012  Holding Fixture (1).
  50. GM5478754

    Differential Drive Pinion Gear Nut (1) - Remove and DISCARD

  51. Make an alignment mark on the pinion flange and the pinion shaft.
  52. GM5478755

    Using the EN-24420-A  Crankshaft Balancer Puller (1), Remove the rear wheel drive shaft flange (2) from the differential carrier drive pinion gear splines.

  53. GM5478756

    Rear Wheel Drive Shaft Flange (1) - Remove

  54. Remove the EN-24420-A  Crankshaft Balancer Puller.
  55. GM5478758

    Using the appropriate tool, remove the differential drive pinion gear seal (1).