Removal Procedure

WARNING: This page is about a different car, the 2003 GMC Savana Special, 2003 GMC Savana Camper Special, 2003 GMC Savana, and 2003 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION: Do not damage the sealing surfaces of the transfer cases or the shafts when prying the seals for removal. Damaging the sealing surface may cause leakage or require replacement of the damaged component.

Raise the vehicle.
Remove the transfer case from the adapter. Refer to TRANSFER CASE .
Using the J 36825 (2) and J 23907 (1) remove the input shaft seal. See Fig 1.
1. Poke a hole in the seal using a very small punch.
2. Thread the tool J 36825 (2) into the hole.
  
  Fig 1: Removing Input Shaft Seal Using J 36825 & J 23907
  Courtesy of GENERAL MOTORS CORP.