tranmission

Have a 94 ram 1500 v85.9 2wd automatic needed
o ring on dip stick holder and transmission pan
was leaking a little so we changed the
transmission filter and gaskets and put new guild
in transmission. We drove it for a few hundred
miles in last three months and it just stopped
pulling one day going down the road.  U can cut it
off and crank it back up it will catch sometimes
and move bout four feet then some things it want
even go into gear and if it does like I said it will
move bout four feet. Just changed the filter and
gasket and filters again to see if filter maybe was
stopped up and it drove maybe ten miles and
started the same thing again. Any idea if what to
do and what kind of traission it may be? It does
has electronic of button on dash.  Does whole
traissipn need to be rebuilt or or maybe just
solenoids replace? Any help or idea please