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hpcm2

  1. Problems, Driver Warnings or DTCs - Chevy Volt
    I keep getting code P0CE0 after having replaced the solenoid/coolant control valve. The code comes infrequently and I often hear the valve run when I test it (using vcx nano), so it may be a wiring problem but more likely a bad HPCM2. Does anyone have a wiring diagram for the pins on the HPCM2...
  2. Care, Maintenance & Service - Chevy Volt
    I recently had the "Service High Voltage Charging System" message on my 2013 Gen1 Volt come up. After taking it to the dealer they told me that the issue was caused by faults in the HPCM2 and BECM modules. They reprogrammed and recalibrated the modules and kept the car overnight to let it sit so...
  3. Generation 1 Volt (2011-2015)
    Hello Volt family, I took my 2013 volt for the above recall last year and the next day the charge indicator was showing 60mi charge, which at first made me really happy, but of course, I realized that was impossible... I called the dealer and they asked me to take the vehicle back only to tell...
  4. Generation 1 Volt (2011-2015)
    I own an Ampera and few months ago I upgraded HPCM2 and BECM modules with my SPS account. After I went from 9.6 to 8.6 kWh for a average distance of 30-37 miles. Now I want come back to the previous sw version and to do I need a VCI code. Anybody successfully obtained it from GM?
  5. Generation 1 Volt (2011-2015)
    2012 Chevrolet Volt. About 11 months ago I received a software update to my Volt. A few days ago, my car refused to charge and produced the message, “Service High Voltage Charging System” with the diagnostic codes of P1E00, P0AA6 and P1FFF. I took the car to Priority Chevrolet in...
  6. Generation 1 Volt (2011-2015)
    So I just had my 2012 Volt at the dealer due to a "Service High Voltage Charging System" Error message, and I have to say i'm rather disappointed with the dealer and Chevy. First the car is at 90,006 Miles, and this is the second time in a year that the error appeared. First the dealer issue...
  7. Generation 1 Volt (2011-2015)
    Even though its dated October, I just received this letter today from GM. Apparently there's a glitch in the software regarding dates. Unfortnately this cannot be fixed via OnStar, so I'll have to take it to the dealer sometime in the next 12 months. (I'll probably just have it done whenever...
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