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Home >> Hummer >> 2003 >> H2 >> Repair and Diagnosis >> External Pages >> Different car >> Section 708 (Front Drive Axle) >> Repair Instructions >> Differential Carrier Assembly Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 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. Pivot the differential carrier assembly up and back on the lower mount bolt while it is being supported by the transmission jack.
    Fig 1: Install Differential Carrier Assembly, Lower Mounting Bolt & Nut
    G01480442Courtesy of GENERAL MOTORS CORP.
  4. Install the differential carrier assembly upper mounting bolt and the nut.
    Fig 2: Install Differential Carrier Assembly Upper Mounting Bolt & Nut
    G01480443Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to FASTENER NOTICE .
  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).
    Fig 3: Inner Axle Housing Washers & Nuts
    G01480444Courtesy of GENERAL MOTORS CORP.
  6. Connect the vent hose to the differential carrier assembly.
  7. Remove the transmission jack.
    Fig 4: Connect Vent Hose To Differential Carrier Assembly
    G01480445Courtesy of GENERAL MOTORS CORP.
  8. Connect the wire harness to the differential carrier assembly, S4WD axle only.
    Fig 5: Connect Wire Harness To Differential Carrier Assembly (S4WD Axle)
    G01480446Courtesy of GENERAL MOTORS CORP.
  9. Connect the wire harness to the inner axle shaft housing, S4WD axle only.
    Fig 6: Connect Wire Harness To Inner Axle Shaft Housing (S4WD Axle)
    G01480447Courtesy of GENERAL MOTORS CORP.
  10. Connect the electrical connector to the front axle actuator, S4WD axle only.
    Fig 7: Connecting Electrical Connector To Front Axle Actuator (S4WD Axle)
    G01480448Courtesy of GENERAL MOTORS CORP.
  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. Install the relay rod. Refer to RELAY ROD REPLACEMENT  .
  13. Install the front propeller shaft to the differential carrier assembly. Refer to PROPELLER SHAFT REPLACEMENT-FRONT  .
  14. Check the differential carrier assembly fluid level. Refer to Lubricant Level Inspection - Front Drive Axle .
  15. Install the front differential carrier assembly shield, if equipped. Refer to Shield Replacement .
  16. Remove the utility stands.
  17. Lower the vehicle.
Fig 8: Install Wheel Drive Shaft Inboard Flange To Inner Axle Shaft Bolts
G01480449Courtesy of GENERAL MOTORS CORP.
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