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  1. Anyone manage to get the used kwh and range back, after the 2 software update due to SHVCS?

    Problems, Driver Warnings or DTCs - Chevy Volt
    I started some discutions but nobody answer this simple question. I get the SHVCS message 2 weeks ago and the only solution offered by my dealer service was to update the battery module software and another one, I don't remember. So just before update my ususal range was ~70km and 9.7-10.2 kwh...
  2. SHVCS Situation - DEC19 Appearance, 2011 Volt

    Problems, Driver Warnings or DTCs - Chevy Volt
    All, I apologize for throwing another SHVCS post into the mix, but have had challenges locating a parallel on this forum to my current issue. If someone with experience here can point me to an existing thread suggesting how to resolve this issue, I'll happily look there and delet this post to...
  3. Software Update Bricked the HPCM

    Care, Maintenance & Service - Chevy Volt
    I'm new to this forum but I've owned my 2012 Volt for almost 4 years now. It's been a fantastic car, one that I've thoroughly enjoyed. Some time ago, I received the dreaded "Service High Voltage Charging System" warning message. I did some research and took it in, aware that it was probably...
  4. 2013 SHVCS Message, plus Initializing....Wait to Shift. No propulsion, advice?

    Problems, Driver Warnings or DTCs - Chevy Volt
    Hey there, Happy owner of a 2013 Volt here. Well, happy until last weekend. I'd never had any problems with this car, but on Saturday it showed the "Service High-Voltage Charging System" message. Thankfully it was in my garage at home, so I was able to troubleshoot stuff over 2 days. I pored...