GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 42738 Seal Installer

Removal Procedure


    Object Number: 678215  Size: SH
  1. Remove the transfer case. Refer to Transfer Case Assembly Replacement .
  2. using a flat-tipped screwdriver, remove the input shaft seal.

Installation Procedure


    Object Number: 678288  Size: SH

    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 transfer case input shaft seal evenly on the input shaft.
  2. Important: The input shaft seal should be even with the surface of the transfer case after installation.

  3. Using the J 42738 , install the transfer case input shaft seal.
  4. Install the transfer case. Refer to Transfer Case Assembly Replacement .
  5. Check the fluid level. Add fluid of necessary.