Drive Range, Third Gear (Hydraulic Circuits): Notes
WARNING: This page is about a different car, the 2021 Cadillac XT6. However, it is still accessible from the selected car via links, so may be relevant.
As the vehicle speed increases, the transmission control module (TCM) receives input signals from the automatic transmission input and output speed sensors, the throttle position sensor and other vehicle sensors to determine the precise moment to command OFF the 2-9 solenoid. At the same time the VFS S3-8 solenoid is also commanded ON to regulate 3-8 clutch apply.