Variable Low and 1-2 Reverse and 4th Clutch Boost Valve
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.
Variable low and 1-2 reverse and 4th clutch boost valve spring force moves the variable low and 1-2 reverse and 4th clutch boost valve to the released position, allowing VL 12 reverse/4th clutch feedback fluid pressure to exhaust into the VL 12 reverse/4th clutch feed circuit.