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Home >> Chevrolet >> 2001 >> Venture Base, Van Passenger >> Repair and Diagnosis >> External Pages >> Different car >> Section 779 (Automatic Transaxle Service, Removal & Installation -- 4T65-E) >> Repair Instructions >> Case Extension Housing Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2003 Pontiac Montana, 2003 Oldsmobile Silhouette, and 2003 Chevrolet Venture. However, it is still accessible from the selected car via links, so may be relevant.
  1. Raise and support the vehicle. Refer to JACKING AND LIFTING in General Information.
  2. Disconnect the right drive axle from the transaxle. Refer to AXLE SHAFT in Wheel Drive Shafts.
  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 With Axle Seal And O-Ring
    G01531459Courtesy 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 Case Extension Housing
    G01531460Courtesy of GENERAL MOTORS CORP.
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