GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2003 🢒 Express - AWD 🢒 Driveline/Axle 🢒 Transfer Case - BW 4473-NP3 🢒 Input Shaft Seal Replacement
    • J 45758 Seal Installer
    • J 36825 Output Shaft Oil Seal Remover
    • J 23907 Slide Hammer

Removal Procedure

    Notice: Refer to Transfer Case Seal Removal Notice in the Preface section.

  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Remove the transfer case from the adapter. Refer to Transfer Case Assembly Replacement .

    3. Object Number: 819621 Size: SH
  3. Using the J 36825 (2) and J 23907 (1) remove the input shaft seal.
    4. 3.1. Poke a hole in the seal using a very small punch.
    3.2. Thread the tool J 36825 (2) into the hole.

Installation Procedure

    Object Number: 823255 Size: SH

    Important: When installing the input shaft seal, make sure that the part numbers on the seal are facing outward toward the technician.

  1. Position the seal on the input shaft.
  2. Using the J 45758 , install the input shaft seal in the transfer case.
  3. Install the transfer case to the adapter. Refer to Transfer Case Assembly Replacement .
  4. Lower the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.