Procedure for dismantling
1. Place a drain pan under the rear drive unit.
2. Remove the drain plug from the bottom of the rear drive unit and the filler plug from the left side of the rear drive unit.
3. Drain the liquid.
4. Remove the differential cup side bracket assembly.
5. Disconnect the clutch controller connector and remove the clutch controller from the rear drive unit housing.
6. Remove and discard the toothed flange nut.
7. Remove the toothed flange.
8. Remove the clutch assembly, housing and seal.
9. Remove the side cover and differential cup seal assembly.
10. Remove the rear drive shaft seals.
Assembly procedure
Necessary equipment
DT-48254 Rear Drive Shaft Seal Installation Tool.
1. Install the side cover and differential cup seal assembly.
Tighten
Tighten the differential cup side bracket mounting bolts to 29 N·m (21 ft·lbs).
2. Install the rear drive shaft seal using the DT-48254 drive shaft seal installer.
3. Install the clutch assembly, housing and seal.
Tighten
Tighten the clutch housing assembly mounting bolt to 26 N·m (19 ft·lbs).
4. Install the toothed flange.
5. Install a new toothed flange nut.
Tighten
Tighten the toothed flange nut to 203 Nm (150 ft·lbs).
6. Install the clutch controller on the rear drive unit housing and connect the clutch controller connector.
Tighten
Tighten the clutch controller mounting bolt to 10 Nm (71 lb-ft).
7. Install the differential cup side bracket assembly.
Tighten
Tighten the differential cup side bracket bolt assembly to 29 N·m (21 ft·lbs).
8. Thoroughly clean the drain plug threads and apply thread sealant, GM part number: 12346004 (part Number for Canada 10953480), on the plug thread.
Tighten
Tighten the plug to 42 Nm (31 lb-ft).
9. Fill the RDM with grease until it overflows the filler hole.
10. Thoroughly clean the filler plug threads and apply thread sealant, GM part number: 12346004 (part Number for Canada 10953480), on the plug thread.
11. Install the filler plug.
Tighten
Tighten the plug to 42 Nm (31 lb-ft).
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