One problem related to transfer case has been reported for the 2000 GMC Sierra 1500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2000 GMC Sierra 1500 based on all problems reported for the 2000 Sierra 1500.
The np246 transfer case oil pump plate wears a hole into the case, causing it to leak. There is a saver plate that can be installed that prevents this problem.