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  1. Problems, Driver Warnings or DTCs - Gen 2 Volt
    After running the engine for a while (usually at highway speeds), I will hear a whining sound when turning the steering wheel back and forth. it is a high pitched whine, proportional to the speed of the steering wheel being turned (so it is not just a squeek) I have never heard the sound while...
  2. Problems, Driver Warnings or DTCs - Gen 1 Volt
    In searching for my first [used, Gen 1] Volt, four of the five 2012-14’s I’ve driven have had the very annoying high-pitched ~12 kHz ambient whine during Hold/Regen, even with the rear load decks properly seated. I gather from many threads that most attribute the noise source to the APM (DC-DC...
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