Some early model Volts have an issue with the heater core not always working properly. I had the issue, and I suspect more do than what has been reported, but the less informed believe you just don't get heat without the engine running (which of course isn't true).
Regardless of whether or not the problem is occurring when you go see them, there are codes they should be able to read out from that module that verify the problem is present. The solution is for them to usually replace the Heater Core, which is the unit that gives you heat when the engine isn't running. Sometimes, a reprogramming can work too, I am told.
You may want to check out this thread and reference the noted PICs for your dealer:
http://gm-volt.com/forum/showthread.php?20578-2013-14-Volt-No-Heat-Issues-PIC5796-PIC5855-PIC5943
If they continue to give you a hard time, I would find another dealer or escalate to GM customer service.
Sorry you're having an issue here, but once resolved I think you'll really love the Volt!
Regardless of whether or not the problem is occurring when you go see them, there are codes they should be able to read out from that module that verify the problem is present. The solution is for them to usually replace the Heater Core, which is the unit that gives you heat when the engine isn't running. Sometimes, a reprogramming can work too, I am told.
You may want to check out this thread and reference the noted PICs for your dealer:
http://gm-volt.com/forum/showthread.php?20578-2013-14-Volt-No-Heat-Issues-PIC5796-PIC5855-PIC5943
If they continue to give you a hard time, I would find another dealer or escalate to GM customer service.
Sorry you're having an issue here, but once resolved I think you'll really love the Volt!
