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  1. Retrofit 2019 heater software to 2018-2016

    Suggestions for GM - Chevy Volt
    Please allow the new feature to defer ICE engagement to lower temperature to be flashed to the prior year Volts. For much of fall and spring I would prefer that the ICE did not run just to provide a little extra unneeded heat.
  2. No Heat in EV Mode Gen 1 2014

    Generation 1 Volt (2011-2015)
    Hey all, Before my 2014 Volt goes into the dealer on Monday, I wanted to get some troubleshooting help. When in EV mode, I get a lot of cold air from the vents. I first noticed this yesterday pre-conditioning the car in about 38 deg. F outside temps, and the car was plugged in to L1. On my...
  3. 2013 Volt - Heater Runing With The AC

    Problems, Driver Warnings or DTCs - Chevy Volt
    I searched the forums and couldn't find anyone that has had this same problem. We have two Volts, both 2013's. Mine has 66k miles on it, Wife's has 42k, and it's 12 month CPO warranty was up in May. :mad: Tonight on our way to dinner, the climate control was set to comfort, and 70 degrees...
  4. coolant pump

    Generation 1 Volt (2011-2015)
    Why is the auxiliary coolant pump not covered under powertrain warranty when it supplies heated coolant to the engine?
  5. Gurgling after Coolant heater control module replacement

    Generation 1 Volt (2011-2015)
    Good afternoon, Friday we had our 2013 Volt serviced to get the Coolant heater control module replaced. Every startup hereinafter it's made a gurgling noise that I assume is the coolant. When I was talking to the service advisor less than an hour before the shop closed he made it seam like they...
  6. 2017 Volt making annoying/sharp humming noise - coming from the front; Heating proble

    Problems, Driver Warnings or DTCs - Gen2 Volt
    After 3 months of purchase, now my 2017 Volt makes annoying/sharp humming noise, that comes from the front (feels like behind the display, or so). The noise is irritating, piercing to ears, uncomfortable and felt inside even when radio is on. No such sound occurred between July (purchased month)...
  7. Preconditioning method for in-garage use on 120v this winter w/o discharging battery

    Generation 2 Volt (2016-2020)
    I've been reading around a lot of threads here about preconditioning and haven't found an answer to this question: How can I get my DW's Volt preconditioned as warm as possible in our attached/insulated-but-not-heated garage without reducing the range (discharging the battery during...
  8. Best Way To Get Heat In Winter

    Newcomers to GM-VOLT.COM (See here for FAQs)
    I am trying to come up to speed on my new (to me) 2013 Volt. My wife suffers during the winter with cold feet. Of course I purchased the car during the end of the summer when it was impossible to test the heater under real conditions. Now that the first cold snap has hit the Minnesota river...
  9. Auxiliary Heater

    Suggestions for GM - Chevy Volt
    The Volksvagen Westfalia improved on the air-cooled Microbus by offering the option of an auxiliary heater that burned fuel. A heater for cold-weather regions would make the Volt more user-friendly. Many vehicle buyers also insist on AWD, the Subaru AWD being the single most popular sedan in...
  10. full time heater

    Problems, Driver Warnings or DTCs - Chevy Volt
    At over 43k miles, my 2012 Volt EV mileage dropped by about 5 miles overnight (now 37, was 46 summer and 41 winter). The cause seems to be that if the fan is on at any level, the accessory usage jumps to about 30% from zero (used to be around 6% with the fan on), even in Eco mode with nothing...
  11. 2014 Volt: Heater Problem

    Problems, Driver Warnings or DTCs - Chevy Volt
    Hi, I recently bought a used 2014 Volt for my wife. About two weeks ago, the weather here in LA got a little cold, so she turned on the heater, only to get cold air. No matter how far up you jack the thermostat, the AC icon on the climate display shows the AC turning on and off, followed by the...
  12. Hot Thoughts from a Freezing Volt in Florida

    Generation 1 Volt (2011-2015)
    Now that it’s getting really cold down here (45), and into my 2nd Volt Winter, I've got a few observations. The Volt’s electric heat sucks as bad as my condo’s electric heat. (But the Volt gives me an option I can’t get in my condo). I find myself thinking how lucky I am that I own a Plug-in...
  13. 2014 Volt Heater Problem Diagnosed & Fixed by Dealer

    Generation 1 Volt (2011-2015)
    October 30, 2014. Got my 5-month old, 2014 Volt back from the dealer today (took it in yesterday). The heater now works great! Here is what was written on the ticket and I hope this helps some of you. It is the only problem I've had and was the first time it was in for repairs. I was told...
  14. Battery thermal management - Actual measurements

    Generation 1 Volt (2011-2015)
    Battery temperature management system (TMS) has been a topic of high interest for Volt owners on this forum. The related thread posted more than a year and half ago has almost 60,000 views as of today (http://gm-volt.com/forum/showthread.php?5243-Volt-thermal-management-system-temperature-band)...
  15. Intermittent Heating Persists after Update

    Problems, Driver Warnings or DTCs - Chevy Volt
    After the recent bulletin to have inverter modules reprogrammed, I was told my Volt was updated to the latest software versions and my intermittent heat issue should be solved. However, that is not the case. The video below describes exactly what I'm observing; while the behavior is...
  16. Is anyone satisfied w/ ability to heat cabin in normal mode (battery)

    Problems, Driver Warnings or DTCs - Chevy Volt
    My question is: Has any 2013 owner been satisfied getting cabin (not seat) heat on command, while running on battery, w/o the climate system deciding (for extended periods) that you don't need it, you can't have it, or even that you need cooling instead? If so what settings do you use, and what...
  17. 2013 Heater on Eco blows only cold air

    Problems, Driver Warnings or DTCs - Chevy Volt
    Had my 2013 Volt 2.5 wk now; first cold night tonight. I had a headcold; wanted a warm car. 57 degrees outside; felt like colder than that in the car Set it on comfort; upped the temp to 78 degrees; set the onscreen vent selector to blow on my face (I wasnt accidentally set to "no vents" like...
  18. 2013-14 Volt - No Heat Issues - PIC5796 PIC5855 PIC5943

    Generation 1 Volt (2011-2015)
    For the second time I have had an issue where my volt would not provide heat. The "HEAT ON" symbol would not turn on and had to make a real cold trip. This is the second time this has happened so I took it into the dealer to be reviewed. Apparently this is a none issue and GM is working on a...
  19. Too much heat from Climate Control in Mountain Mode

    Generation 1 Volt (2011-2015)
    Hi, Anybody ever had this issue where the heater is stuck on maximum heat while in Mountain Mode even when you set the climate ontrol to to LOW? Here are the details: EDIT: Auto defrost if OFF. 1. Outside temperature 2 deg. Celsius (34 F). Depleted battery. Climate control set to 21* deg...
  20. No electric heat yesterday, 3 start cycles, but fine today

    Mechanical Systems - Chevy Volt
    Yesterday was a very rainy day, and after I drove around in the rain in the morning, I left for the store in the afternoon. I was plugged in and at 80% charge. When I got in the Volt it was 38 degrees outside, and I drove 6 miles and 10 minutes and the HVAC was blowing frigged cold air. I was...
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