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Upper Valve Body

WARNING: This page is about a different car, the 2012 RAM Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Upper Valve Body Components
GC0109732Courtesy of CHRYSLER GROUP, LLC
1 - COMBINED DRAIN 5 - SHIFT SOLENOID VALVE NO. 3
2 - GAIN CHANGE SOLENOID VALVE 6 - SHIFT SOLENOID VALVE NO. 2
3 - MANUAL VALVE 7 - SHIFT VALVE NO. 1
4 - MODULATOR VALVE  
Valve Function
Manual valve Selects N, R, and D passages in accordance with drivers movement of the shift lever
Modulator valve Regulates line pressure and supplies it to the linear and shift solenoids.
Shift solenoid valve number 2 Directs line pressure and control pressure for clutch and brake engagement.
Shift solenoid valve number 3 Directs line pressure and control pressure for clutch and brake engagement.
Gain change solenoid valve Changes pressure from control pressure to line pressure.
Combined drain Enables fluid emerging from clutch passages and brake passages to drain away.