Sorry to hear of your problems. As for the fuel pump going at 39k there are a bunch of reasons that could happen and not all of them are the trucks fault. I think every truck maker has had problem trucks out there, you may have gotten one of Nissans. If you read around on these threads you will find others that have had problems trucks, but far more that have not. I have not. My truck has been dead reliable every minute of every day. If you feel the need to go to another brand, it's understandable with your experience, but look at the experiences of others as well. I was always a Ford man and walked away from them, but I had three bad trucks in a row. Maybe your the smart one and I am not. It's all a lottery. Wether you get another nissan or a different brand, your still buying a ticket. Good luck and I hope things get better.