My 2003 Misubishi Montero Sport XLS will not move until warm why on 2003 Mitsubishi Montero Sport

I have changed the transmission fluid and filte and nothing has chaned. Cold there be vacuum hose that is off or worse problems. Changing the fluid and filter did not help at all.

Asked by for the 2003 Mitsubishi Montero Sport
poss trans oil pump takes time to build pressure. seek a diag of issue by having fluid pressue tested while cold and hot.aamco will diag and give you an est for free then shop prices