Shift Rite Transmissions replacement for 4L60E 96-97 M30 Sonnax Update Control Valvebody Shift Rite 4L60E Sonnax updated tcc regulator valve installed Including valve body gaskets, new transgo separator plate, filter, and much more Done by a professional shop Bonus: we are now including the accumulator pistons that wear out on the pin, now is the time to change them since the will be accessible when installing the valve body.