2004 DODGE RAM 2WD WITH THE 4.7 LITER AND 57,000 MILES . HAVING WEIRD PROBLEMS WITH THE TRANSMISSION, IF I START THE TRUCK AND PUT IT INTO ANY GEAR RIGHT AWAY IT WON'T SHIFT RIGHT AND WON'T GO INTO OVERDRIVE. BUT IF I START IT AND LET IT SIT FOR 30 SECONDS , EVERYTHING WORKS FINE AND HAS BEEN THIS WAY FOR 15,000 MILES. I'M GETTING READY TO GO ON A TRIP AND WANT TO MAKE SURE IT SHOULD BE OKAY.
torque converter, filter and fluid have been replaced, i was thinking a pump problem

low fluid
torque convertor shot - more than likely

Pretty common - dodge tranny's are weak