Transmission Rear Case Disassemble

Tools Required

• J 44707  T Bar Push Puller
• J 44736  Bridge and Forcing Screw. See Special Tools .
• J 44737  Shift Rail Bearing Remover
• J 44738  Bearing Remover. See Special Tools .

1. Remove the back-up lamp switch.
   Fig 1: Removing Back-Up Lamp Switch

   Courtesy of GENERAL MOTORS CORP.
2. Remove the reverse gear idler shaft bracket bolt with the O-ring seal.
   Fig 2: Removing Reverse Gear Idler Shaft Bracket Bolt

   Courtesy of GENERAL MOTORS CORP.
3. Remove and discard the O-ring seal.
4. Remove the reverse gear idler shaft bracket. Rotate the bracket to aid in removal.
   Fig 3: Removing Reverse Gear Idler Shaft Bracket

   Courtesy of GENERAL MOTORS CORP.
5. Remove the reverse gear idler shaft.
   Fig 4: Removing Reverse Idler Gear Shaft

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6. Remove the reverse idler gear bearings.
7. Remove the reverse idler gear.
8. If RWD, remove the mainshaft rear oil seal and discard.
   Fig 5: Removing Mainshaft Rear Oil Seal (RWD)

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9. If 4WD, remove the mainshaft rear bearing O-ring seal and discard.
   Fig 6: Removing Mainshaft Rear Bearing O-Ring Seal (4WD)

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IMPORTANT: Only remove the bearings if replacing the bearings. Do not use the bearings again after removal.
10. Inspect the bearings for damage or wear. Refer to Bearings and Spacers Cleaning and Inspection .
11. Remove the rear case shift rail bearing using the J 44707  (1) and the J 44737  (2). Expand the J 44737  to fit securely in the bearing.
    Fig 7: Removing Rear Case Shift Rail Bearing

    Courtesy of GENERAL MOTORS CORP.
IMPORTANT: Only remove the bearings if replacing the bearings. Do not use the bearings again after removal.
12. Inspect the bearings for damage or wear. Refer to Bearings and Spacers Cleaning and Inspection .
13. Remove the countershaft rear bearing from the rear case using the J 44736  (1) and the J 44738  (2). See Special Tools . Expand the J 44738  to fit securely in the bearing. See Special Tools .
    Fig 8: Removing Countershaft Rear Bearing

    Courtesy of GENERAL MOTORS CORP.