UPDATE 1-General Motors’ executive vice president for software and services Mike Abbott to step down

General Motors said on Tuesday that Mike Abbott will step down as executive vice president, software and services, due to health reasons. Last year, GM appointed Abbott to lead a division that will bring together three software functions within the company and spearhead development of vehicle and enterprise software technologies. Baris Cetinok, vice president of product in software and services, has been named the interim head of software and services, GM said on Tuesday.