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Installation 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.
IMPORTANT: When installing the input shaft seal, make sure that the part numbers on the seal are facing outward (away from the body of the transfer case).
  1. Align the input seal evenly on the input shaft.
    IMPORTANT: The input shaft seal should be even with the surface of the transfer case after installation.
  2. Using the J 42738,  install the input shaft seal.
  3. Install the transfer case. Refer to Transfer Case Adapter Replacement .
  4. Check the fluid level, add fluid if necessary.
    Fig 1: Install Input Shaft Seal Using J 42738
    G01481383Courtesy of GENERAL MOTORS CORP.
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