Drive Range, Second Gear: Notes
WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
As vehicle speed increases and operating conditions become appropriate, the transmission control module (TCM) processes input signals from the output speed sensor, the throttle position (TP) sensor and other vehicle sensors to determine the precise moment to de-energize or "turn OFF" the normally low pressure control solenoid 4 trim, to command ON the normally high pressure control solenoid 2 trim, and shift the transmission into Second gear.