Drive Range, Fifth Gear: Notes
WARNING: This page is about a different car, the 2016 Cadillac CTS. 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 ON the normally-low 1-3-5-6- 7 control solenoid. At the same time the normally-high 2-3-4-6-8 control solenoid is commanded OFF.