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high voltage

  1. Excellent 2 hour video on 2018 Volt battery

    Generation 2 Volt (2016-2020)
    Not sure if this has been already mentioned, but here is a very detailed tear-down of the 2018 Volt battery.
  2. Mystery CEL & S1E98, P1EC4 error codes

    Generation 1 Volt (2011-2015)
    I suppose it was bound to happen sometime. My 2011 with 70k miles has been 99.9% flawless. But recently I had a mystery CEL that OnStar could not diagnose. I soon experienced the following: With an empty battery charging at 240v would be interrupted within about 15 minutes of starting. My...
  3. Battery cooling pump/radiator

    VOLT Consumer Advisory Board (CAB) Archive Only
    2012 volt. Recent warning light about high voltage charging system. Was told by dealer that the battery cooler beneath the radiator was punctured. Good news is that they could repair. Bad news is that dealer claims it is not under warranty as it is probably from "road debris". Anyone with...