In this episode I describe 2 case studies where technical service bulletins really made my life easy. The first case study, a 2013 Buick Lacrosse Hybrid that isn't charging the 12 volt battery. The second, a 2007 Chevrolet Silverado with a cylinder 7 misfire. https://autodiagpodcast.com/https://www.facebook.com/groups/223994012068320/