Reverse, 1st Shift Solenoid (SS) Valve Assembly (S1)
WARNING: This page is about a different car, the 2003 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
The reverse, 1st SS valve assembly is de-energized, allowing fluid pressure in the S1 signal (14) fluid circuit and the reverse inhibit (52) fluid circuit to exhaust through the solenoid.