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Home >> Buick >> 2015 >> Regal GS, AWD >> Repair and Diagnosis >> Drivelines & Axles >> Differentials & Drive Axles >> Rear Drive Axle >> Repair Instructions >> Differential Carrier Assembly Replacement >> Installation Procedure

Installation Procedure

    Fig 1: Rear Differential Assembly
    GM2279903Courtesy of GENERAL MOTORS COMPANY
  1. Using the hydraulic jack stand, position the rear differential assembly (1) in the vehicle.
  2. Fig 2: Identifying Front Differential Mounting Bolts
    GM2279896Courtesy of GENERAL MOTORS COMPANY
  3. Clean the bolts and apply thread locker on the threads. Refer to Adhesives, Fluids, Lubricants, and Sealers 
  4. CAUTION:

    Refer to Fastener Caution .

  5. Install the front differential mounting bolts (1) and tighten to:
    • First Pass: 90 N.m (66 lb ft)
    • Final Pass: plus 90 to 105 degrees
  6. Fig 3: Rear Differential Assembly Mounting Bolts
    GM2279898Courtesy of GENERAL MOTORS COMPANY
  7. Install the rear differential assembly mounting bolts (1) and tighten to:
    • First Pass: 90 N.m (66 lb ft)
    • Final Pass: plus 90 to 105 degrees
  8. Remove the hydraulic jack stand.
  9. Install the wheel drive shafts. Refer to Rear Wheel Drive Shaft Replacement .
  10. Install the parking brake cable . Refer to Parking Brake Rear Cable Replacement .
  11. Reconnect the electrical connectors from the rear differential assembly to the chassis.
  12. Install the exhaust muffler assembly. Refer to Exhaust Muffler Replacement (Single)Exhaust Muffler Replacement (Dual) .
  13. Install the propeller shaft assembly. Refer to Propeller Shaft Replacement .
  14. Check the fluid level of the rear differential assembly. Refer to Differential Clutch Oil Inspection , and Rear Axle Lubricant Level Inspection .
  15. If installing a NEW rear differential assembly, fill with the proper fluid. Refer to Differential Clutch Oil Replacement , and Differential Oil Replacement .
  16. Remove the supports and lower the vehicle.
  17. Program the rear differential assembly. Refer to Control Module References .