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

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).


    Object Number: 678288  Size: SH
  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 if necessary.