The valve body is an integral part of any Chrysler automatic transmission. The valve body essentially is a control center filled with pistons, springs and check balls utilized to direct hydraulic fluid throughout the transmission to shift gears, control rpm, etc. The valve body is essentially the brain behind the automatic transmission's shifting. It is important to give your Chrysler valve body a good inspection each time you change the transmission filter or overhaul the transmission.
Draining and dropping the transmission out of the Chrysler is the best and easiest way to get to the valve body. Drive the car up on ramps and put the parking brake on. Place the transmission in neutral and chock the wheels so the car won't roll. Disconnect the negative battery terminal, then crawl under the car and locate the transmission fluid drain plug. Unscrew the plug and allow the fluid to drain out completely. Disconnect the transmission crossmember and use a jack to slightly lower the transmission. Remove the bellhousing bolts holding the transmission in place and the slide it out from underneath the car.
Use a socket wrench to remove the bottom cover of the transmission to expose the valves. Remove the transmission filter, which usually slides out (in some models you may need to unbolt a few other mounting bolts before you can pull it out). Once the filter is out, unbolt the remaining mounting bolts on the valves and remove them. Be careful to pay attention to how the springs and check balls fit into each of their subsequent cutouts within the transmission.
With the valves and transmission filters removed, use a socket wrench to remove some of the other bolts surrounding the valve body (the item that looks like a twisty maze inside the transmission). Lift the valve body out of the transmission and inspect each section carefully. Look for nicks or scratches that could inhibit the flow of transmission fluid from one part of the valve body to another; if any are identified, have a machine shop buff them out carefully. (You can also use this opportunity to beef up the internals of your transmission a bit as it is completely disassembled at this point.)
