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  1. HVAC & Phone Calls

    Generation 2 Volt (2016-2020)
    Hi, Has anyone discovered a way in the Gen 2 to disable the lowering of the HVAC fan speed when a phone call is received? I reviewed the settings and options and couldn't find anything. Thanks,
  2. Locked Out of Comfort Mode in Climate Control

    Problems, Driver Warnings or DTCs - Chevy Volt
    Hi Everyone, This is my first post on this forum. I purchased a used 2015 Volt, with about 14k miles, about six weeks ago. I've been driving it daily. It has been hot here in St. Louis, in the mid-90's. I park the car in the shade while at work. A few days back, with plenty of charge, I found...
  3. How do we get GM to re tune HVAC software on 2013 onwards Gen 1

    Problems, Driver Warnings or DTCs - Chevy Volt
    GM installed Automatic climate control to allow for lower energy consumption an maximum range. The 2013 onwards Gen 1 (at least the ones I've seen) need a revisit of the K33 software as they are: 1) Wasting electricity running the A/C unnecessarily counteractive to heating! 2) Running the A/C...
  4. Heater won't work/Need to replace Auxiliary Pump impeller (past warranty)

    Care, Maintenance & Service - Chevy Volt
    My 2014 Volt's heater stopped working. I finally had a chance to take it in to the dealer to service the oil and rotate tires and take a look. 3 days later, they call to tell me the following "Suspect Coolant heater Auxiliary Pump impller is freewheeling on pump shaft. Reco replace pump"...
  5. Cold air not directed to dash vents when using remote-start to pre-cool interior

    Problems, Driver Warnings or DTCs - Chevy Volt
    Hi, this is my first post and the first problem I've had with my 2014 Volt since buying it in November, 2013. I live in Miami, FL and therefore it is really hot outside from May - October. Since we are now in the hot season, I've started to use the remote-start feature to cool the interior of...
  6. Squeaky HVAC Blower Motor

    Problems, Driver Warnings or DTCs - Chevy Volt
    When the HVAC fan/blower is at low speed there is an intermittent high-pitch squeaking coming from it. If I increase the fan speed it disappears, but if I lower the speed it comes back. After a while the squeaking becomes rather annoying and can be heard over the road/wind noise or even over...
  7. Why 65%?

    Generation 1 Volt (2011-2015)
    This morning, I'm driving (19 miles) without any HVAC (that I know of), no headlights, no wipers, no seat warmers, no defoggers, and my windows are up. I'm also in Fan Only mode--with the fan off. The outside temperature was about 51F (11C). With all this in place, why is my Climate Setting on...
  8. Sugestion: Use A/C compressor as heat pump!

    Suggestions for GM - Chevy Volt
    Although I took delivery of my (leased) 2012 volt in June, and haven't driven it in winter, that many report the Volt gets significantly lower miles-per charge with the cabin heater running. What I don't understand is why GM would elect to use a resistive heating element (which are very...