Last night, my husband was driving our 2010 Chevy Malibu (~125k) when it suddenly starting blowing AC, lost power, and died on the side of the road. He coasted to safety, then tried to turn the car back on but after the car and engine turned on (all lights and everything came on) the power was lost again. It won't stay on and is undriveable at the moment. The check engine light was coming on intermittently in the past but we really haven't driven in much in the last 2-3 mos due to corona. We took it out earlier yesterday for some errands and there were no issues. The check engine light was on. We towed it to a mechanic and their diagnostic is telling them "no communication" when they try to run the diagnostic. There have been electrical issues with the car since we got it in 2011, including the issues with transitioning completely in to park and the radio, which are commonly discussed on her. Any ideas what could be wrong? What should we look into?