Shift Stabilization – How/when does it work?
A. Shift stabilization is a software feature in the Transmission Control Module (TCM) that is intended to minimize ‘shift busyness’, or ‘hunting’ between ranges. Based on several inputs and a ‘map’ of engine torque at various RPM and throttle position, the TCM determines before making an upshift whether the engine will be able to maintain vehicle speed in the next higher range. If it senses that it does not, it will prevent the upshift from occurring.
