I had my Gen 1 replaced as have a few others here. I don't think it is "cell failure was something like 2 problems per million" based on just the numbers on this forum let alone those that are not on the forum.Still continuing. Its been 3 1/2 weeks since the first issue and 3 weeks since parts were ordered and they were just received at the dealership yesterday. Now the mechanic needs to read up on the repair process. Yes, like both of you suggested the front Battery segment was shipped.
Its interesting to note that my dealership did not know what exactly was coming until it arrived. The process was combersome with no etas provided. A contact at GM Oshawa explained that GM elected to go through a single 3rd partly distributer to administer the batteries. It may work better in the US but getting it to Ontario Canada was a slow process including holdups at the border.
Its good there have been few battery issues. Getting close.
I do have to say that my 2016 Volt has been the "best car ever" for me. This experience has also shown just how great a vehicle the Volt is. So far I have had a Malibu, Cruze and Traverse as rental cars and while they all had good features I really miss my Volt.
My repair took like 2.5 weeks as they needed to get the battery section and some equipment to install/test it. So far so good with it. Have < 1 year let on the 7 yr and 100K voltec warranty.