Greetings to all - this is my first post to the forum. As the title says, how were maps updated in the 2014 Equinox? We bought a used one a year ago and wanted to update the maps, only to find out that the last official update was in 2016. I have seen CD/DVD updates for the first generation and SD cards for the third generation, but I'm at a loss as to how the second gen was updated. I can't find an SD card slot anywhere unless it's buried behind some panel. Any thoughts/suggestions appreciated.