Transmission filter change on a 2000 Chevrolet Silverado 1500 2wd, 5.3L. Had to drop the pan to drain the transmission fluid due to a rounded out drain plug bolt from previous owner. Once pan was dropped, removed old drain plug from the inside of the pan with a 1 1/8" deep well socket, 1/2 inch drive. Also had to remove three bolts from the exhaust pipe to give some room to drop the pan.