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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1536 (Automatic Transmission - 5AT - Introduction (2 Of 2)) >> Repair Instructions >> Repair Instructions - Off Vehicle >> Main Shaft Disassemble >> Disassembly Procedure

Disassembly Procedure

WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Rear Of Mainshaft & Components Removed
    GM1203918Courtesy of GENERAL MOTORS CORP.
  1. Remove the following components from the rear of the mainshaft (603):
    • 5th/reverse drive gear and clutch hub thrust bearing (619)
    • 5th/reverse drive gear (620)
    • 5th/reverse drive gear and clutch hub inner bearing (621)
    • 5th/reverse drive gear and clutch hub thrust bearing (622)
    • 5th/reverse drive gear and clutch hub bearing race (623)
    • 4th/5th clutch assembly (643)
    • 4th/5th/reverse clutch housing fluid passage O-ring seals (604)
  2. Remove the following from the front of the mainshaft (603):
    • Mainshaft front bearing retaining ring (600)
    • Mainshaft front bearing (601)
    • Mainshaft fluid passage seal (602)
  3. Fig 2: 4th Drive Gear With Clutch Hub Assembly & Mainshaft
    GM1203919Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: The 1st/2nd/3rd drive gear (641) does not remove from the mainshaft (603).
  4. Using a hydraulic press and J 22912-B  , remove the 4th drive gear with clutch hub assembly (642) from the mainshaft (603).
    • Protect the end of the mainshaft to avoid damage to the threads.
    • Ensure the J 22912-B  is under the bearing race. Do not catch on or under the flange on the shaft.
  5. Fig 3: 4th Drive Gear And Clutch Hub Bearing, Retaining Ring & Drive Gear
    GM1470586Courtesy of GENERAL MOTORS CORP.
  6. Remove the 4th drive gear and clutch hub bearing retaining ring (605).
  7. Using a brass drift and hammer, remove the 4th drive gear and clutch hub bearing (606) from the 4th drive gear (607).