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Home >> Pontiac >> 2001 >> Aztek Base, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 980 (Front Drive Axle) >> Repair Instructions >> Differential Carrier Assembly Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the differential carrier assembly.
  2. Install the differential carrier assembly lower mounting bolt and the nut.

    Do not tighten the bolt at this time.

    3. Fig 1: View Of Differential Carrier Lower Mounting Bolt
    GM834278Courtesy of GENERAL MOTORS CORP.
  3. Pivot the differential carrier assembly up and back on the lower mount bolt while it is being supported by the transmission jack.
  4. Install the differential carrier assembly upper mounting bolt and the nut.
    5. Fig 2: View Of Differential Carrier Upper Mounting Bolt
    GM834276Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice in Cautions and Notices.
  5. Install the inner axle housing washers and nuts to the bracket.

    Tighten: 

    • Tighten the inner axle housing nuts to 100 N.m (75 lb ft).
    • Tighten the upper and the lower differential carrier assembly bolts to 100 N.m (75 lb ft).

    6. Fig 3: View Of Inner Axle Housing Nuts
    GM834241Courtesy of GENERAL MOTORS CORP.
  6. Connect the vent hose to the differential carrier assembly.
    7. Fig 4: View Of Vent Hose To Differential Carrier Assembly
    GM834272Courtesy of GENERAL MOTORS CORP.
  7. Remove the transmission jack.
  8. Connect the wire harness to the differential carrier assembly, S4WD axle only.
    9. Fig 5: Connecting Wire Harness To Differential carrier Assembly (S4WD Axle Only)
    GM924846Courtesy of GENERAL MOTORS CORP.
  9. Connect the wire harness to the inner axle shaft housing, S4WD axle only.
    10. Fig 6: Connecting Wire Harness To Inner Axle Shaft Housing (S4WD Axle Only)
    GM924830Courtesy of GENERAL MOTORS CORP.
    Fig 7: Connecting Electrical Connector To Front Axle Actuator (S4WD Axle Only)
    GM834234Courtesy of GENERAL MOTORS CORP.
  10. Connect the electrical connector to the front axle actuator, S4WD axle only.
  11. Install the wheel drive shaft inboard flange to inner axle shaft bolts, both sides.

    Tighten:  Tighten the wheel drive shaft inboard flange to inner axle shaft bolts to 79 N.m (58 lb ft).

    12. Fig 8: View Of Wheel Drive Shaft Inboard Flange Bolt - Front Drive Axle
    GM763646Courtesy of GENERAL MOTORS CORP.
  12. Install the relay rod. Refer to Relay Rod Replacement in Steering Linkage.
  13. Install the front propeller shaft to the differential carrier assembly. Refer to Propeller Shaft Replacement - Front in Propeller Shaft.
  14. Fill the differential carrier assembly. Use the correct fluid. Refer to Lubricant Replacement - Front Drive Axle .
  15. Install the front differential carrier assembly shield, if equipped. Refer to Shield Replacement .
  16. Install the engine protection shield. Refer to Engine Protection Shield Replacement in Frame and Underbody.
  17. Remove the utility stands.
  18. Lower the vehicle.
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