GM's EVs, which include the bestselling Chevrolet Bolt as well as more recent Ultium-based EVs from Chevy, Cadillac, and GMC, will require an adapter to connect the Tesla J3400 (originally NACS) plug ...
While GM will begin fitting its EVs with a Tesla charging port next year, owners of existing vehicles can now purchase an adapter for access to Tesla's Superchargers.
The Tesla Supercharger network is officially open to GM EVs, but they will all require a NACS adapter. Luckily, GM is already offering an official one for sale.