I experienced “Service High Voltage Message” on 2 trips today during moderate rain and fog. Subsequently, later today while driving to the Dealership for service on a dry road the message did not appear. Dealership seemed to have heard of this problem and mentioned a major software update. A different representative at the Dealership mentioned the word “sensor”. We are fortunate to have a very capable Dealership, however; I am sure they as well as the the Engineers at General Motors are still learning.
