Hummer EV Road Trip Plus Charging Problems

First video from our Hummer EV road trip, and we’re already dealing with some charging weirdness.

Tesla Superchargers using the NACS adapter are working reliably, but only around 170–180 kW. When I try high-power CCS chargers like ION/IONNA or Mercedes 400 kW, the charge starts, ramps up, then fails shortly after and the charge port turns red.

GM says there are no vehicle codes, but I’m trying to figure out if this is a high-power CCS / 800V charging issue, charger compatibility problem, or something else.

If you own a Hummer EV or have seen this before, I’d love any guidance or ideas. More road trip videos coming soon.

Видео Hummer EV Road Trip Plus Charging Problems канала Altitude Tech Life