1994 1999 Chevy Silverado 4WD problems

How to tell if your transfer case motor for 4wd is not working right and how you may be able to fix the problem.
This video is intended to help diagnose and repair four wheel drive issues that are common to Chevy Blazer, S10 Pickup, GMC Jimmy and other GM 4WD SUVs .
A very very detailed video for those knowing little or nothing about their 4wd system. If you have some knowledge and experience already, this video will most .
Some Chevrolet / GMC trucks, and suvs have a problem with the pump in the transfer case wearing through the rear half of the transfer case housing.