ACDelco CVT (Continuously Variable Transmission) Fluid is critical in ensuring the proper operation and maintenance of GM CVTs. CVTs are 'step-less', lacking the gears of a traditional automatic transmission, and the use of this fluid will assist in guaranteeing the CVT's advantages in efficiency. The continuously variable transmission fluid specifications are a function of the design parameters for the transmission. Each CVT has its own specific requirements. Not all CVT fluids are the same. Check owner manual for proper application.