"Sicard" completed repairs on 20 September and, after refresher training, sailed for Pearl Harbor on 4 October. Following another period of upkeep from 10 October to 16 November, she commenced duty training submarines. She conducted daily exercises with submarines off Oahu until 9 January 1945, and then performed similar duties at Midway until 2 September 1945. During this period, she was reclassified a miscellaneous auxiliary, AG-100, effective 5 June 1945. On completion of training duty, "Sicard" arrived at the Philadelphia Navy Yard for inactivation on 21 October.