Last week my 2012 Volt displayed an Initializing message after pressing the power button. I tried powering it off, even getting out of the car, closing the door and locking it. I decided to power it back on and call OnStar. After about 20 minutes, with it still displaying the initializing screen, I powered it off, waited 15 seconds and then powered it back on. This time it started up normally, but there was a malfunction light. The car was fortunately able to make it to the dealer. They reported that it needed a new $2,400 inverter (covered by the warranty). Has anyone run across this issue before?
Inverter Failure
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I assume you're referring to the motor controller/inverter? I guess that's really the only one, but I want to make sure you're not confusing it with the car's DC-DC converter, which keeps the 12V battery charged from the high voltage battery. 
It's the inverter module, part number 24279726. I have the car back now and everything appears to be good.I assume you're referring to the motor controller/inverter? I guess that's really the only one, but I want to make sure you're not confusing it with the car's DC-DC converter, which keeps the 12V battery charged from the high voltage battery.
The part is available below for $1,300 plus $1,000 core charge if you do not return the old part. Still very expensive and does not include installation. Glad you are under warranty. I hope this failure does not become common.
http://www.gmpartsdirect.com/oe-gm/24279726
http://www.gmpartsdirect.com/oe-gm/24279726
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Whew! That was a rather large expense. Yours (and mine) being a 2012 I am assuming the Voltec 8years/100k covered that part. Am I correct?
Yes you are right! I checked the paperwork to make sure.
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My 2012 is also same ages 2 days ago on-board charger was replace. Parts seems starting failing after around 4 years and up!
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Just not true.
All you have here is simple anecdotal evidence that 2 cars had an issue with two different components.
I can tell you that either of these failures, is extremely rare on the Gen1 Volt
(if indeed they were actual failures, sometimes replacing something doesn't necessarily mean it needed replacing even if it's fixed
)In any case, neither potential failure have ever been reported here at any significant frequency (the best source of this data on the web)
I sure wouldn't sweat it
WOT
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My 2011 is 5 years, 8 months old, 80+K miles. My 120V EVSE is still working, though I rarely use it (have a 240V for that). Parts replaced so far: a faulty engine oil hose at 30k miles, a fuse at 70k miles (both warranty work). YMMV
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