GM Service and Parts Operations (GM SPO) is a division of General Motors that supplies replacement parts, and automotive service through GM's network of Dealers. For Non-GM vehicles, ACDelco (a division of GM SPO) supplies replacement and repair parts for GM and Non-GM vehicles in over 100 countries around the world. GM Accessories (a division of SPO) supplies an extensive portfolio of performance, functional, entertainment and appearance automotive accessories for all GM vehicle brands worldwide.
GM SPO is headquartered in Grand Blanc, Michigan. GM SPO is also the world headquarters of GM Goodwrench, the automotive service brand for Chevrolet, Buick, Pontiac, GMC, Cadillac and HUMMER.