Transfer Case
WARNING: This page is about a different car, the 1989 Jeep Wrangler, 1989 Jeep Wagoneer, 1989 Jeep Grand Wagoneer, 1989 Jeep Comanche, and 1989 Jeep Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
Remove drain plug from transfer case. Remove fill plug for easier draining. With fluid fully drained, reinstall drain plug. Fill transfer case and install fill plug. Tighten drain plug and fill plugs to 20 ft. lbs. (27 N.m).