Note the position of the manual valve. It is the piston looking thing and has a notch in it in which a pin on the detent lever resides. Remove the bolts in the plated section, all but one in the center most section. Now get your drain pan ready as here comes the tranny fluid shower. Slowly back out the last bolt about a quarter of an inch and wiggle the valve body slightly so that tranny fluid starts flowing. o Let this drain for 15 – 20 minutes (should be about 3-4 quarts).