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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1040 (Rear Drive Axle) >> Repair Instructions >> Differential Replacement (9.75 Inch Axle) >> Removal Procedure

Removal 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. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Remove the axle shafts. Refer to Rear Axle Shaft Replacement (8.6 Inch, 9.5 Inch Axles)  or Rear Axle Shaft Replacement (9.75 Inch Axle) .
  3. Loosen the bearing cap bolts.

    Do not remove the bearing cap bolts at this time.

  4. Install the J 24385-C  onto the axle housing as shown.
    5. Fig 1: Installing J 24385-C Onto The Axle Housing
    GM815461Courtesy of GENERAL MOTORS CORP.
  5. Install the J 25025  (2), the J 8001-1 and the J 8001-2 (1), the J 34178  (3), and the J 8001-3 and the J 8001-4 (4) onto the axle housing as shown.
    6. Fig 2: Installing J 8001-2, J 25025 & J 34178 Onto The Axle Housing
    GM815667Courtesy of GENERAL MOTORS CORP.
  6. Preload the dial of the J 8001-3 by pushing the J 8001-3 against the edge of the J 24385-C  until the needle of the J 8001-3 has moved approximately 3/4 of a turn clockwise.
  7. Rotate the indicator housing to align the indicator needle of the J 8001-3 and the dial indicator face to ZERO.
    8. NOTE: Do not spread the axle housing more than 0.38 mm (0.015 inch). Overspreading the housing may result in component damage.
  8. Spread the axle housing by turning the clevis screw of the J 24385-C  clockwise while observing theJ 8001  .

    Spread the housing just enough to remove the differential assembly.

  9. Remove the J 25025-B  , the J 8001-1, the J 8001-2, the J 34178  , the J 8001-3 and the J 8001-4 from the axle housing.
    10. CAUTION: Refer to Differential Case Removal Caution in Cautions and Notices.
  10. Remove the bearing cap bolts.
    11. IMPORTANT: Corresponding letters are stamped on the bearing caps and axle housing. The bearing caps must be reassembled in the same position as removed.
  11. Remove the bearing caps.
  12. Remove the differential assembly.
  13. Remove the J 24385-C  .
  14. Remove the ring gear. Refer to Drive Pinion and Ring Gear Replacement (8.6 Inch, 9.5 Inch, 11.5 Inch Axles) , Drive Pinion and Ring Gear Replacement (9.75 Inch Axle)  or Drive Pinion and Ring Gear Replacement (10.5 Inch Axle) .
  15. Remove the differential side bearings, if necessary. Refer to Differential Side Bearings Replacement (All Except 9.75 Inch Axle)  or Differential Side Bearings Replacement (9.75 Inch Axle) .
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