I have a 2012 Suburban. I've had this phantom issue for about three years. The truck will randomly shake then the engine light will come on and the message center will say that the AC Off Engine Hot. however the engine is not hot at all. the first time it happened, i changed the thermostat. That fixed it for about a year. Then it showed back up again last year. I did some research and after battery cable disconnects ( I really think its electrical), it went away.Now almost a year later it has done the same thing. Any Ideas?