Your model came thru with either a manual or automatic trans. The manual version was usually indicated in the model #- with either a F or H in included with the model #.

If this isn't the case, then yours would be an automatic. There should be a dipstick at the very top of the floorboard- by the gas pedal- that would be my first check, not only does the ATF (Dextron type) have to be full- in should also be pink & have the usual ATF smell. If it's brown or smells burnt- you may be in trouble.

If both those checks pass the test, then there's a gizmo called an "inching spool" which allows that trans to be put into neutral by the brake pedal. Check the level & color of the ATF before we jump into this circuit.

And- low hydraulic fluid won't cause tranny issues- if the unit has sat for 2 years I'd recommend flushing the hyd. system & replacing the hyd oil.