Escalade, Suburban, Tahoe, Yukon, Denali, DenaliXL, YukonXL 1999-2005

Differential Carrier

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Removal & Installation



  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Remove or disconnect the following:

    Wheels
     
    Skid plate
     
    Fluid
     

  4.  
  5. Matchmark and remove the front driveshaft.
  6.  
  7. Remove or disconnect the following:
    NOTE
    Wire both axle shafts out of the way.


    NOTE
    Depending on the model, it may be necessary to remove the engine oil filter.



    Right axle shaft at the tube flange
     
    Left axle shaft at the carrier flange
     



    Connectors from the indicator switch and actuator
     
    Carrier vent hose
     
    Axle tube-to-frame bolts, washers and nuts
     
    Lower carrier mounting bolt
     
    Right side inner tie rod end at the relay rod
     

  8.  
  9. Support the carrier on a floor jack

    Upper carrier mounting bolt
     

  10.  
  11. Lower the carrier assembly from the truck.
  12.  

To install:

  1. Raise the carrier into position.
  2.  
  3. Install or connect the following:

    Upper carrier mounting bolt, washers and nut. Then, install the lower carrier mounting bolt, washers and nut. Tighten the bolts to 80 ft. lbs. (110 Nm).
     
    Oil filter
     
    Tie rod end. Tighten the nut to 35 ft. lbs. (47 Nm).
     
    Axle tube-to-frame bolts, washers and nuts. Tighten the nuts to 75 ft. lbs. (100 Nm) for 15 and 25 series; 107 ft. lbs. (145 Nm) for 35 series.
     
    Vent hose
     
    Wiring
     
    Axle shafts at the flanges. Tighten the bolts to 59 ft. lbs. (80 Nm).
     
    Driveshaft. Tighten the bolts to 15 ft. lbs. (20 Nm).
     
    Gear oil
     
    Wheels
     

  4.  
  5. Add any engine oil lost when the filter was removed.
  6.  

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Remove or disconnect the following:

    Front axle fluid
     
    Front driveshaft
     
    Left and the right drive axle halfshaft
     
    Axle tube nuts from the bracket
     
    Wiring at the axle
     
    Vent hose at the axle
     
    Carrier assembly lower mounting bolt and the nut
     
    Idler arm from the relay rod
     
    Pitman arm from the relay rod
     

  4.  
  5. Attach a transmission jack to the carrier assembly.

    Click image to see an enlarged view

    Fig. Front differential carrier removal-15 Series-2000-01 models



    Remove the upper carrier assembly mounting bolt and the nut.
     
    Remove the carrier assembly from the vehicle.
     

  6.  

To install:

  1. Install or connect the following:

    Carrier assembly in the vehicle
     
    Carrier assembly upper mounting bolt and the nut
     
    Lower carrier assembly mounting bolt and the nut. Tighten the bolts to 75 ft. lbs. (100 Nm).
     
    Pitman arm to the relay rod
     
    Idler arm to the relay rod
     
    Axle tube nuts to the bracket. Tighten the bolts to 75 ft. lbs. (100 Nm).
     
    Vent hose
     
    Wiring to the axle
     
    Left and the right drive axle halfshaft
     
    Front driveshaft to the pinion flange
     

  2.  
  3. Fill the front differential with lubricant.
  4.  

  1. Turn the steering wheel all the way to the left.
  2.  
  3. Raise and support the vehicle.
  4.  
  5. Place jack or utility stands at the rear end of the vehicle.
  6.  
  7. Remove the engine protection shield.
  8.  
  9. Remove the front differential carrier assembly shield, if equipped.
  10.  
  11. Drain the differential carrier assembly.
  12.  
  13. Disconnect the front driveshaft from the differential carrier assembly.
  14.  
  15. Remove the relay rod.
  16.  
  17. Support the differential carrier assembly with a transmission jack or equivalent.
  18.  
  19. Remove the halfshaft inboard flange bolts from the inner axle shaft on both sides.
  20.  
  21. Disconnect the electrical connector from the front axle actuator, S4WD axle only.
  22.  
  23. Disconnect the wire harness from the inner axle shaft housing and differential, S4WD axle only.
  24.  
  25. Disconnect the vent hose from the differential carrier assembly.
  26.  
  27. Remove the inner axle housing nuts and washers from the bracket.
  28.  
  29. Remove the differential carrier assembly upper mounting bolt and the nut.
  30.  
  31. Pivot the differential carrier assembly forward and down on the lower mount bolt while it is being supported by the transmission jack.
  32.  
  33. Secure the differential carrier assembly to tool Jack.
  34.  
  35. Remove the differential carrier assembly lower mounting bolt and the nut.
  36.  
  37. Remove the differential carrier.
  38.  

To install:

  1. Install the differential carrier.
  2.  
  3. Install the differential carrier assembly lower mounting bolt and the nut. Do not tighten the bolt at this time.
  4.  
  5. Pivot the differential carrier assembly up and back on the lower mount bolt while it is being supported by the transmission jack.
  6.  
  7. Install the differential carrier assembly upper mounting bolt and the nut.
  8.  
  9. Install the inner axle housing washers and nuts to the bracket.
  10.  
  11. Tighten the inner axle housing nuts and the upper and the lower differential carrier assembly bolts to 75 ft. lbs. (100 Nm).
  12.  
  13. Connect the vent hose to the differential carrier assembly.
  14.  
  15. Remove the transmission jack.
  16.  
  17. Connect the electrical connector from the front axle actuator, S4WD axle only.
  18.  
  19. Connect the wire harness from the inner axle shaft housing and differential, S4WD axle only.
  20.  
  21. Install the halfshaft inboard flange to inner axle shaft bolts, both sides, and tighten to 58 ft. lbs. (79 Nm).
  22.  
  23. Install the relay rod.
  24.  
  25. Install the front driveshaft to the differential carrier assembly.
  26.  
  27. Fill the differential carrier assembly.
  28.  
  29. Install the front differential carrier assembly shield, if equipped.
  30.  
  31. Install the engine protection shield.
  32.  
  33. Lower the vehicle.
  34.  

 
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