Well, I suppose it had to happen sometime, but I've had my first problem with my 9 month old 2017. The first thing I noticed was that the EV Range display went out. I noticed immediately as I probably look at this number more than any other. I restarted the car and the light was on, but went out again in a minute or two. Same thing with three or four restarts.
Second, the "Energy Used" report that comes up upon shutdown was inaccurate. I had driven 5.6 miles, but the range since last recharge indicated 2.2 miles - the range since the last restart. Also the KwH was wrong, which was verified when I plugged in and checked recharge time. It showed .7 KwH's used, but that was too high for 2.2 miles and too low for 5.6 miles. In our current 70+ degree weather I always get between 5.5 and 6.5 miles per KwH.
I can't contact my Service Dept. until Monday, but in the meantime, anyone have any ideas?
Contact OnStar and ask them for any error codes that your Volt has generated. It could be a bad 12V battery, this can cause all sorts of wonky Volt behaviors.
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