Allison Transmission Holdings Inc. announced that David S. Graziosi, currently Chief Financial Officer, has been promoted to the additional role of President, effective immediately. Graziosi joined Allison in November 2007 as Executive Vice President, CFO and Treasurer, shortly after the Company's sale by General Motors to The Carlyle Group and Onex Corporation. In his expanded role, Graziosi will oversee Operations and Purchasing, Quality and Reliability, Legal/Corporate Affairs and Communications/Internal Audit, Human Resources, and Information Systems and Services, in addition to continuing responsibility for Financial and Treasury activities.