GM becomes the third automaker with access, but with almost a dozen different cars under three brands, this almost triples the number of non-Tesla car models that will use the Superchargers

General Motors is now offering its electric car customers access to more than 17,800 Tesla Superchargers in North America. However, a GM-approved NACS adapter is required for Cadillac, Chevrolet, and GMC electric models to plug in.