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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 >> Installation Procedure

Installation 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. Lubricate the inside diameter of the new seal with J 36850  .
    Fig 1: Installing Transmission Extension Housing Rear Oil Seal
    GM744178Courtesy of GENERAL MOTORS CORP.
  2. Use the J 41505  (1) with a soft faced mallet to install the seal (2).
  3. Install the seal (2) to the extension housing (3).
  4. Install the propeller shaft. Refer to Propeller Shaft Replacement - One Piece or Propeller Shaft Replacement - Two Piece in Propeller Shaft.
  5. Remove the drain pan and lower the vehicle.
  6. Fill the transmission to the proper level with Dexron® III transmission fluid. Refer to Transmission Fluid Checking Procedure .
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