Hopefully upgrading to a 2018 Volt this weekend...

I did the 120/240 mod to my 2014 EVSE (should be same as yours).
I figure, I did the mod, it's never going back to GM.
I bought another unmodified used EVSE to keep in the car, and trade in, if I ever do that.

One of the first times I brought my car back for service, I got berated for having an unsafe EVSE and adapters in the hatch. They also "let the air out of my tires" (44 --> 38psi). They later agreed to leave my tire PSI alone in the future, but I'm not going to argue the EVSE point (I do use it a lot).

Dealers do ask about any mods to a car being traded in.

colchiro said:

Worst case I may have to keep my modded EVSE and let them keep the one from the new vehicle.

Click to expand...

Agree, oddly enough, that may not satisfy the dealer. Mis-matched parts will continue to raise questions. In your case it really would be ok, but Volt has had cases where that doesn't work. Example, the 2011/2012 models didn't have the 8/12A setting on the car (config menus). There was a physical switch on the EVSE. So pair a 2013+ EVSE with a 2011/12 car, and you can't set 8A.

IIRC, buying the second used 2013 EVSE cost me about $225.