I replaced my transmission in my 2004 Nissan Maxima at the Nissan dealership. Two years later the transmission is acting up. I went to the store and got back in my car, put it in drive and the car wouldn't move so I gave it a little gas and it still wouldn't move. Then I cut the car off for 15 mins then put the car in gear then it made a thump noise like it was hung up. So what do I need to do I am feed up. Transmission are not cheap. I love the car because I needs to work but scared to drive the car. It might put me down somewhere.