2012 Service Airbag Sensor

I am a proud Volt and Bolt owner, but recently have had an issue with my Volt. The service airbag light is on, and the dealership says that it is the passenger side seat 'passenger presence module' that needs to be replaced, at a cost of over $800. The car is a 2012 with 65k miles, so is out of warranty, but I just find it really disappointing that this kind of manufacturer issue is not covered by the manufacturer through a recall or factory warranty. This isn't an issue of routine maintenance, and the car has never been in an accident, so it just does not seem like something I should have to pay $800 for. I used to only drive Prius' and Insights, and never had any such issue with my Honda's or Toyota's. I am new to Chevy as of this year with my new bolt and used volt, and am definitely disappointed if this is the level of manufacturer quality I can expect from now on. Has any one else had a similar problem with their first gen volt, and had any luck resolving it? Thanks!