I have done some searching but haven't found anyone with the same problems as I have. When I accelerate there is a loud whining sound coming from the transmission/driveline area. It only makes the sound when I accelerate and when I am cruising. I don't notice the sound at speeds lower than 40mph. It is a very annoying humming whine. When I let off the accelerator the sound goes away. The transmission seems to be shifting fine. I checked the tranny fluid (warm engine, flat surface, idling), it seemed a little low so I added some. This didn't help anything. I am no mechanic but have some theories. -Transmission? -wheel bearing? -Front axle? If anybody could give me some help I would really appreciate it. Also wanted to mention that I searched for a vacuum leak and didn't find one.