1993 intrepid shifting problem

It wont always go into drive. sometimes it will right away. It doesnt always shift thru all the gears, and sometimes it will. It always goes into reverse though. I took it in and I was told the fluid looks and smells good, and that he took off the pan and the gears look good.He didnt have time to do anything more with it . Well im a female and know nothing really about cars,so i took it home....can anyone help? ive been told it might be the tranny control modual?? has anyone had this tranny problem. I love this car,please help.