Service high voltage system?

Tiny
MARIUS AUNINSH
  • MEMBER
  • 2012 CHEVROLET VOLT
  • 1.4L
  • 2WD
  • AUTOMATIC
  • 212,000 MILES
Hi,

Request to service high voltage system and I can't charge car hybrid battery from cable. Is some way to get update cars "brains'? There were no updates in cars life, if possible, to support me as I'm not from the US send me some info.
Wednesday, February 26th, 2025 AT 6:19 AM

3 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,137 POSTS
Yes! I have this car, and I can tell you the coolant for the battery pack is low, you need to remove the metal safely to remove the cap to add coolant. Here is the location of what you need to check. Once the coolant has been added the light will go out. Check out the images (below). Let us know what you find.
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Thursday, February 27th, 2025 AT 11:53 AM
Tiny
MARIUS AUNINSH
  • MEMBER
  • 2 POSTS
I was also checking this coolant tank sensor. And level also. All seems okay.
I found on YouTube that there could help system update. But I need soft from chevy what costs 40$ for 2 years. But it could be bought only from US.
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Thursday, February 27th, 2025 AT 12:41 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,137 POSTS
Lets connect a scanner and see which codes are stored, this guide can help:

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Please go over this guide and get back to us.
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Friday, February 28th, 2025 AT 5:20 PM

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