Dampner failed, purchase van with this problem 3 months ago and still have not received the dampner part from gmc. *bf the vehicle was purchased with only 60 miles on it. during the test drive, prior to purchase, there was a harmonic roar noise vibration coming from the rear. *sc
Valve body was replaced, the fan motor was replaced, and all of these parts were defective again. dealer stated that vehicle needed a new transmission. the manufacturer stated warranty expired.*ak