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Home >> Chevrolet >> 2001 >> Venture Base, Van Passenger >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transaxle -- 4T65-E - Service & Repair >> Repair Instructions >> Case Extension Housing Replacement >> Removal Procedure

Removal Procedure

  1. Raise and support the vehicle. Refer to LIFTING AND JACKING THE VEHICLE .
  2. Disconnect the right driver axle from the transaxle. Refer to WHEEL DRIVE SHAFT REPLACEMENT -- FRONT .
  3. Remove the transaxle brace. Refer to Automatic Transmission Brace Replacement 
  4. Remove the vehicle speed sensor. Refer to Input Speed Sensor Replacement 
  5. Remove the case extension housing bolts (5).
  6. Remove the case extension housing (6) with the axle seal and the O-ring (8).
    Fig 1: Removing Case Extension Housing & Bolts
    G01812602Courtesy of GENERAL MOTORS CORP.
  7. Inspect the case extension housing (6) for the following conditions:
    • A damaged or porous sealing surface for the case extension seal
    • A damaged or porous sealing surface for the vehicle speed sensor
    • A damaged or porous sealing surface for the right drive axle oil seal
    • A damaged or porous sealing surface for the case extension housing
    • A damaged or worn differential carrier bushing or output shaft bearing
    • Damaged bolt holes
    • Inspect the drive axle seal and replace if necessary
    Fig 2: Inspecting Drive Axle Seal
    G01812603Courtesy of GENERAL MOTORS CORP.
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