GM’s three large crossovers — the Buick Enclave, GMC Acadia and Chevy Traverse — were some of the automaker’s few bright spots during its darkest hours. The oldest of the trio, the Acadia, gets a midcycle refresh that was unveiled at the Chicago Auto Show. Updates include a bold, new face and new safety technology such as a front center airbag, according to Cars.com Industry Analyst Kelsey Mays.