AFAIK, all new EV's come with a L1 EVSE. It's part of the car, like a tire jack and spare tire used to be. If I bought a used EV, I would expect it to be there or require the dealer to supply it at no extra charge.
WeberAuto on YouTube has posted a lot of videos showing (and disassembling) the components of the Bolt. Here's one that my help with coolant loops, but you can search for others. https://www.youtube.com/watch?v=_ILkLUE3Zxc