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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1388 (Front Drive Axle) >> Repair Instructions >> Front Differential Case Disassemble (9.25 Inch Axle) >> Disassembly Procedure

Disassembly Procedure

WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the differential side bearing by performing the following steps:
    1. Place the differential case in a vise.
      2. Fig 1: Identifying Special Tool J 22888-20A & Differential Side Bearing
      GM680400Courtesy of GENERAL MOTORS CORP.
    2. Install the J 22888-20A  (2) and the J 36597  (1) as shown. See Special Tools .
    3. Remove the differential side bearings using the J 22888-20A  .
  2. Remove the differential assembly from the vise.
    3. Fig 2: Identifying Ring Gear Bolts
    GM866503Courtesy of GENERAL MOTORS CORP.
    NOTE: The ring gear bolts have left-hand threads.
  3. Remove the ring gear bolts. Discard the bolts.
    4. Fig 3: View Of Ring Gear
    GM866502Courtesy of GENERAL MOTORS CORP.
    CAUTION: Do not pry the ring gear from the differential case. Prying the ring gear from the differential case may cause damage to the ring gear and/or the differential case.
  4. Remove the ring gear from the differential case.

    Drive the ring gear off with a brass drift if necessary.

    5. Fig 4: View Of Pinion Shaft Lock Bolt
    GM851727Courtesy of GENERAL MOTORS CORP.
  5. Remove the pinion shaft lock bolt.
    6. Fig 5: View Of Differential & Pinion Shaft
    GM851733Courtesy of GENERAL MOTORS CORP.
  6. Remove the pinion shaft.
  7. Remove the differential side gear spacers.
    8. Fig 6: Identifying Differential Pinion Gears & Thrust Washers
    GM851732Courtesy of GENERAL MOTORS CORP.
  8. Remove the differential pinion gears and thrust washers by performing the following steps:
    1. Drive the pinion gear thrust washers out from the differential case using a hammer and a brass drift.
    2. Roll the differential pinion gears out of the differential case.

      Mark the pinion gears and thrust washers top and bottom.

    9. Fig 7: Identifying Differential Side Gears & Thrust Washers
    GM851734Courtesy of GENERAL MOTORS CORP.
  9. Remove the differential side gears and thrust washers.

    Mark the differential side gears and thrust washers left and right.

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