Scott, thanks for the use of the video. It’s an excellent video and if I was dealing with a cooperative dealership it would have been very helpful. Unfortunately, I had an unproductive service visit at Penske Chevrolet Service Dept. in Cerritos, CA. In my opinion, they made no attempt to understand the problem and therefore did not fix the noise issue. My impression was the Volt Advisor assisting me was also displeased with Penske’s less than satisfactory level of customer service.There are both 2016 and 2017 Volt owners on this forum with the same issue. (Clanking noise when accelerating from a stop, sound coming from the rear of vehicle. Noise only heard when driving in Hold Mode). I believe it is a factory defect. Everyone with the problem should contact GM. Notify a Volt Advisor at [email protected] . Need to emphasize this problem is not limited to one person.I hope a Volt owner finds a dealer that solves the problem. Instead of approaching this individually, a few of the 2016/2017 Volt owners in the Los Angeles/Orange County area, with the same problem, could schedule a joint service visit and meet with a Dealer Service Manager. Power in numbers and also reinforces this is not limited to one car.Most of us drive primarily in EV mode so the noise is not a daily annoyance. Think about when we sell the car, this clanking noise will likely impact the resale value.2016 Summit White PremierOct. 2015 Build Date