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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 273 (Automatic Transmission Servicing) >> Removal & Installation >> Case Extension Housing >> Removal

Case Extension Housing: Removal

WARNING: This page is about a different car, the 2003 Pontiac Aztek and 2003 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
  1. Raise and support the vehicle. Disconnect the right drive axle from the transaxle. See appropriate AXLE SHAFTS article in DRIVELINE/AXLES. Remove the transaxle brace. See TRANSAXLE BRACE  .
  2. Remove the vehicle speed sensor. See VEHICLE SPEED SENSOR  . Remove the case extension housing bolts. See Fig 1 .
  3. Remove the case extension housing with axle seal and the "O" ring. Inspect the case extension for the following conditions:
    • Damaged or porous sealing surface for the case extension seal.
    • Damaged or porous sealing surface for the vehicle speed sensor.
    • Damaged or porous sealing surface for the right drive axle oil seal.
    • Damaged or porous sealing surface for the case extension housing.
    • Damaged or worn differential carrier bushing or output shaft bearing.
    • Damaged bolt holes.
    • Inspect the drive axle seal and replace if necessary.
Fig 1: Removing & Installing Case Extension
G00057607Courtesy of GENERAL MOTORS CORP.