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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1007 (Automatic Transmission - 4L80-E/4L85-E (Introduction, Service & Replacement)) >> Repair Instructions >> Transmission Extension Housing Rear Oil Seal Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 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 in General Information.
  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 in Propeller Shaft.
  4. Using the J 6125-1B  (1) and the J 23129  (2), remove the output shaft seal (3) from the extension housing (4).
    Fig 1: Removing The Output Shaft Seal From The Extension Housing
    GM749709Courtesy of GENERAL MOTORS CORP.
  5. Inspect the case extension housing for damage. Replace the extension housing if necessary. Refer to Transmission Extension Housing Assembly Replacement .
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