Got the GT!!, Good but yet bad... Options

[ROBWOZ1018]

So I finally got the GT ive been planning to get...I was suprised at how much more power and torque there is in the GT...Also I dont know what but it makes this noise if I put it in the acc position with the key like a spinning turbine for just a moment after what seems to be clicks on a sensor check??...Maybe you guys know what im talking about...But anyways it needs a clutch...I test drove it a week ago and it was fine...After I received the title today I was driving back on the highway and the tach was jumping and wither the clutch is bad or the tranny is slipping...Pretty sure its just a clutch...So im gonna see tomorrow what can be done with the dealer about this...Maybe someone has their own idea of what it is??...I hope for better luck tomorrow...