i am new to this group but I am running out option. I bought my K5 2021 GT line in April. After two weeks of having my car it started shutting off when driving. First time it happen i was on hwy doing 70 it shut off as thoe I turn it off. I had no control. All lights on dash light up. Then i tried to cost to side but couldn’t make it. I finally got stopped put it in park restarted it. No lights on. It happened random. Also my air kicks in out. Along with my car if I give gas at times seem to stale. I am so upset this is nightmare. First time I called about it they said they couldn’t help me because there was no lights on to indicated a problem. I kept calling and refuse to drive it back home had them keep it they have had it for over week still it won’t act up that stated or figure anything out. This car has shut off over 15 times. Help anyone else have issues?????