Has anyone experienced a growling sound from the CVT transmission, usually when warm and decelerating at about 8 to 12 MPH? I had this problem with the first transmission in the Vue, Now it's returning in the replacement transmission the dealer installed. The dealer's only remedy is to add a can of transmission additive and tell me to drive the car about 6,000 miles! Let me know if there is a fix, or if this is an isolated problem.