transmission valve body location?
once you drop the transmission pan then right there is the valve body ! it has several bolts in it so i doubt you have to drop it ! the modulator valve is probably on the outside of the transmission ! if it,s inside the transmission you better let someone else change it because you could lose tiny bearings if you drop it ! how do you know it,s the modulator ? if it,s not changing gears it could be the filter clogged up !
Usually on the side of the transmission is the modulator but if it is inside like said, make sure you don't open the valve body. Things will fall out and you'll curse yourself.
It's inside the transmission. If you don't know what you're doing, then don't mess with it or you'll end up worse than you are now. Hire a professional mechanic to do the work.