Hello all. Calling all 09D transmission experts. What is this nasty noise that my transmission is making? New VB installed by dealer a few years back but less than 5k kms on it since. This sounds had been here since the VB change but moved shortly after and never had the chance to get it back...

Not being mechanically minded I hope I can illustrate my issue clearly without sounding really stoopid! When I accelerate, a deep whine from below the vehicle increases. When I am not accelerating, the sound isn't evident. It isn't from the engine and sounds like is from the bottom of vehicle...