1994 rodeo trans--no drain plug

hello, new to forum. i have a 1994 rodeo, auto 3.2l with no drain plug in the 2 piece transmission....is there a simple way to drain this thing?? i think i would have to remove the crossmember, but does the trans need supporting while i have it off?? why did isuzu not put a drain plug?? one of the quick lube place wouldnt do a trans fluid changeover due to the 2 piece pan.... anybody got any input or suggestions??
thanks, steve koontz

Drop the pan and replace the filter and gasket. Or.... suck it out through the dipstick tube.( don't actually know if that is possible)

i have a new gasket/filter kit for the trans, but wasnt sure if anything major involved since removing the crossmember support bracket...i have tried to run a small tube down the dipstick tube, but it won't go all the way.....go figure, no drain plug.......hmmm.