The Bolt EV's EVSE will run on 240 V power, but you will need an adapter. All of the adapters I've seen are sold out, but someone here might know where they are still available (or have links to making your own). The plug is a NEMA 5-15, so you will be limited to 12 A at 240 V, which is significantly slower than the Bolt EV's max AC charging rate of 32 A at 240 V.btw - my iMieve came with a 110v EVSE. I sent that out to a company called EVSEupgrade - which is no longer around - to have it changed to have a 220 plug put on the end. It was also changed to be programmable (very manually) from 6-13 amps on the the 110v and 9-13amps (I think) on 220v. The EVSE didn't care what you plugged it into. I bought an adapter that allowed me to plug into a normal 3 prong 110v outlet, but the EVSEupgrade changed the plug end on the brick to a NEMA L6 style.
If I am reading the sites correctly, it looks like the Bolt comes stock with just the 110v EVSE. Can that be adapted to be used with 220v?