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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1626 (Automatic Transmission - 4L80-E - Service & Replacement) >> Repair Instructions >> Transmission Extension Housing Rear Oil Seal Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Raise the vehicle. Refer to LIFTING AND JACKING THE VEHICLE .
  2. Place a drain pan under the vehicle.
  3. Remove the propeller shaft. Refer to PROPELLER SHAFT REPLACEMENT - ONE PIECE or PROPELLER SHAFT REPLACEMENT - TWO PIECE .
  4. Using the J 6125-1B  (1) and the J 23129  (2), remove the output shaft seal (3) from the extension housing (4).
  5. Inspect the case extension housing for damage. Replace the extension housing if necessary. Refer to Transmission Extension Housing Assembly Replacement   . 
    Fig 1: Removing Output Shaft Seal From Extension Housing
    G01952436Courtesy of GENERAL MOTORS CORP.
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