I have had my 2019 Bolt for 1 year. It has always charged to ~ 230 miles. I recently took it to the closest local Chevy dealership for the 1 year "check up". Several things made it clear that this dealership was clueless about EVs, including the fact that the paperwork for the check up listed an "oil and filter maintenance" (in addition to a FVI Multipoint vehicle inspection"). After this event, the Bolt will not charge past 174 miles in range. I have looked at the charging screens and it shows 174 miles as a full charge. I have an appointment to take it back to this dealer but my expectations are low. Any ideas?