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Extension Housing Assembly: Removal

  1. Raise and suitably support the vehicle.
  2. Support the transmission with a transmission jack.
  3. Place a drain pan under the vehicle.
  4. Remove the drive shaft. See appropriate DRIVE SHAFTS & UNIVERSAL JOINTS article in DRIVELINE/AXLES.
  5. Remove the transmission mount. See TRANSMISSION MOUNT in REMOVAL & INSTALLATION - BLAZER, JIMMY CANADIAN, SONOMA & S10 PICKUP article.
  6. Remove the case extension bolts (1).
  7. Remove the case extension (2). See Fig 1.
  8. Remove and discard the case extension "O" ring seal (3).
Fig 1: Removing & Installing Extension Housing Assembly
G00087663Courtesy of GENERAL MOTORS CORP.