GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 42738 Seal Installer

Removal Procedure


    Object Number: 678215  Size: SH
  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Remove the transfer case from the vehicle. Refer to Transfer Case Shift Control Module Replacement .
  3. Remove the transfer case 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 (toward the technician).

  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 in the vehicle. Refer to Transfer Case Shift Control Module Replacement .
  5. Check the transfer case fluid level. Refer to Approximate Fluid Capacities .
  6. Lower the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.